The 20 Best Colorectal Cancer Doctors Near Me in Seattle, WA

Find the Top Colorectal Cancer Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 215 doctor with experience in Colorectal Cancer near Seattle, WA. Of these, 128 are Experienced, 35 are Advanced, 23 are Distinguished and 1 are Elite.

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215 providers found
    Distinguished in Colorectal Cancer
    Distinguished in Colorectal Cancer

    Medical Oncology - Swedish Cancer Institute First Hill

    1221 Madison Street, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Gold is a multiple time recipient of the Seattle Top Doctor Award and most recently received the 2024 Seattle Magazine Top Doc Award. Dr. Gold is Director of Clinical Research and the Program Leader for the Gastrointestinal (GI) Oncology Program at the Swedish Cancer Institute in Seattle, Washington. In 1991, Dr. Gold obtained his degree in medicine with a distinction in research at the University of Miami School of Medicine in Florida. He then completed an internal medicine internship and residency at the University of Washington. Dr. Gold received the Amgen Oncology Fellowship Award while he was training in medical oncology at the University of Washington School of Medicine and the Fred Hutchinson Cancer Research Center. Presently, he is board certified in medical oncology. Dr. Gold’s clinical investigations on GI tumors, and particularly colorectal cancer treatment, can be found in peer-reviewed publications like the Journal of Clinical Oncology, Seminars in Oncology, and Cancer Investigation. Furthermore, he currently serves as a member of the NCI Colon Task Force, and the Southwest Oncology Group, where he serves as the subcommittee co-chair for colon cancer. In his free time, Dr. Gold enjoys photography and spending time with his wife and three sons. Dr. Gold is rated as a Distinguished provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Neuroendocrine Tumor, and Lynch Syndrome. Dr. Gold is board certified in American Board Of Internal Medicine. Dr. Gold is currently accepting new patients.

    Distinguished in Colorectal Cancer
    Distinguished in Colorectal Cancer

    Medical Oncology - Swedish Cancer Institute First Hill

    1221 Madison Street, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Somasundaram Subramaniam is a Medical Oncologist at the Swedish Cancer Institute in Seattle, Washington and a 2021 Seattle Met Top Doctor Award winner. He has specialized expertise in the management of Gastrointestinal (GI) Cancers. This includes common cancers like colon and rectal cancers and also less common cancers like stomach cancer, neuroendocrine tumors (NETs) and liver and bile duct cancers. He also treats patients with lung cancer and kidney cancer. Dr. Soma chose to pursue a career in Oncology to help patients diagnosed with very serious illnesses and their families by providing hope, education and the best opportunities for treatment and cure. He is thrilled to be working with at Swedish, which has an excellent group of caring and highly-trained physicians, nurses and providers who all work very closely together with a robust multi-disciplinary team approach.. Dr. Subramaniam is an investigator on several clinical trials and a key member of the Personalized Medicine Research Program at Swedish, which focuses on the using a tumor’s DNA mutations to target it with newer drugs. The Swedish Cancer Institute prioritizes opening cutting-edge clinical trials to ensure patients have access to the latest innovations in cancer therapy. Dr. Subramaniam graduated from medical school at the National University of Singapore and obtained sub-specialty training during his fellowship at Stanford University, which was supported by a T32 training grant awarded by the National Institutes of Health. He is board-certified in Internal Medicine and Medical Oncology. Dr. Subramaniam also earned a Master of Science degree in Epidemiology and Clinical Research from Stanford. In addition to treating patients with cancer, Dr. Subramaniam is the Medical Director of the Cancer Control program, which emphasizes preventative measures and appropriate cancer screening, to reduce the incidence and burden of cancer in our community. Dr. Subramaniam is rated as a Distinguished provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Pancreatic Cancer, Colorectal Cancer, Nerve Decompression, and Laminectomy. Dr. Subramaniam is board certified in American Board Of Internal Medicine. Dr. Subramaniam is currently accepting new patients.

    Advanced in Colorectal Cancer
    Colorectal Surgery
    Advanced in Colorectal Cancer
    Colorectal Surgery

    Swedish Colon & Rectal Clinic - First Hill

    1101 Madison Street, Floor 5, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Darren Pollock most recently received the 2024 Colon/Rectal Surgery Top Doc designation and has received the Seattle Top Doc award for multiple years. Dr. Pollock specializes in the diagnosis and treatment of diseases of the colon, rectum and anus with an emphasis on the surgical management of benign and malignant disease. His primary interests include minimally invasive colon and rectal cancer surgery through laparoscopic and transanal approaches, inflammatory bowel disease, anorectal disease and colonoscopy. He is a Fellow in the American College of Surgeons and in the American Society of Colon and Rectal Surgeons. He believes in patient education and communication to give personalized care. Married with two children, Dr. Pollock enjoys cooking, physical fitness and travel. Dr. Pollock is rated as an Advanced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Familial Colorectal Cancer, Levator Syndrome, Hernia Surgery, and Ileostomy. Dr. Pollock is board certified in American Board Of Colon And Rectal Surgery and American Board Of Surgery. Dr. Pollock is currently accepting new patients.

    Learn about our expert tiers
    Radiation Oncology
    Radiation Oncology

    TIROG - Swedish Cancer Inst - Radiation Oncology - First Hill

    1221 Madison Street, Suite 1, 
    Seattle, WA 
     (0.1 miles away)
    Languages Spoken:
    English, Hindi, Punjabi
    Accepting New Patients
    Offers Telehealth

    Dr. Mehta is a multiple time recipient of the Seattle Top Doctor Award and most recently received the 2024 Seattle Magazine Top Doc Award. He enjoys working with patients and family members. There are a wide variety of treatment options available for nearly every patient, so it is important to spend as much time as is needed in order to weight the benefits and risks to any particular approach. He feels that it is important that communication is open and honest. The goals of treatment, whether it is going for cure or maximizing quality of life should be openly discussed and re-discussed as the need arises. Dr. Mehta is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Anal Cancer, Pancreatic Cancer, Familial Pancreatic Cancer, and Cholangiocarcinoma (Bile Duct Cancer). Dr. Mehta is board certified in American Board Of Radiology. Dr. Mehta is currently accepting new patients.

    Radiation Oncology
    Radiation Oncology

    TIROG - Swedish Cancer Institute - Radiosurgery Center

    550 17th Avenue, Suite A10, 
    Seattle, WA 
     (0.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Landis is a multiple time recipient of the Seattle Top Doctor Award and most recently received the 2024 Seattle Magazine Top Doc Award. He truly enjoys the challenge of caring for cancer patients. A diagnosis of cancer can be overwhelming for a patient and their family. From the beginning he will review the diagnosis in detail, the treatment options, and the potential results of each option, including possible side effects. Dr. Landis enjoys seeing his patients over time, during the course of treatment, and in follow-up. Often it takes some time to understand the patients priorities and wishes. As a physician, he believes in prioritizing the patients quality of life and listening to understand their desires and incorporate this into an individualized treatment plan. He strives to provide the best possible care to all of his patients. Dr. Landis is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Nasopharyngeal Carcinoma, Familial Prostate Cancer, Prostate Cancer, and Primitive Neuroectodermal Tumor (PNET). Dr. Landis is board certified in American Board Of Radiology. Dr. Landis is currently accepting new patients.

    Radiation Oncology
    Radiation Oncology

    TIROG - Swedish Cancer Inst - Radiation Oncology - First Hill

    1221 Madison Street, Suite 1, 
    Seattle, WA 
     (0.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Todd Barnett is a multiple time recipient of the Seattle Top Doctor Award and most recently received the 2024 Seattle Magazine Top Doc Award. Dr. Barnett earned his medical degree from Northwestern University, Chicago, Ill. He completed his residency and fellowship at Stanford University, Calif. Dr. Barnett is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Familial Pancreatic Cancer, Pleuropulmonary Blastoma, Lung Cancer, and Thyroid Cancer. Dr. Barnett is board certified in American Board Of Radiology. Dr. Barnett is currently accepting new patients.

    Experienced in Colorectal Cancer
    Colorectal Surgery
    Experienced in Colorectal Cancer
    Colorectal Surgery

    Swedish Colon & Rectal Clinic - First Hill

    1101 Madison Street, Floor 5, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Hawkins is a multiple time recipient of the Seattle Top Doctor Award and most recently received the 2024 Seattle Magazine Top Doc Award. She likes to take a full body approach to patient care, recognizing that the effects of a patient's disease can be taxing to both their physical and emotional well-being. Dr. Hawkins specializes in the diagnosis and treatment of disease of the colon, rectum and anus. This includes an interest in minimally invasive surgical approaches to colon and rectal cancer, inflammatory bowel disease and diverticulitis, pelvic floor disorders such as fecal incontinence, colonoscopy and basic anorectal disorders. Dr. Hawkins is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Levator Syndrome, Rectal Prolapse, Bowel Incontinence, Colostomy, and Hernia Surgery. Dr. Hawkins is board certified in American Board Of Colon And Rectal Surgery and American Board Of Surgery. Dr. Hawkins is currently accepting new patients.

    Experienced in Colorectal Cancer
    General Surgery | Surgical Oncology
    Experienced in Colorectal Cancer
    General Surgery | Surgical Oncology

    Swedish Surgical Specialists First Hill

    1221 Madison Street, Suite 1411, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    "Dr. Evan Ong most recently received the 2023 Cancer Surgery Top Doc designation and has received the Seattle Top Doc award for multiple consecutive years. Dr. Ong's clinical practice focuses on the treatment of all gastrointestinal cancers with particular interest in treatment options for pancreatico-biliary cancers as well as regional and metastatic disease. He offers state-of-the-art treatment including minimally invasive and robotic surgery for hepatic and pancreatic tumors, microwave and bipolar radiofrequency ablation, irreversible electroporation (Nano-knife) as well as Hyperthermic Intraperitoneal Chemoperfusion (HIPEC), a treatment option for cancers that have disseminated to the peritoneal cavity. Dr. Ong's philosophy of care is ""Qui Audet...Cura"" - ""Who Dares...Cures.""". Dr. Ong is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Colorectal Cancer, Pseudomyxoma Peritonei, Hepato-Pancreato-Biliary Surgery, and Pancreaticoduodenectomy. Dr. Ong is board certified in American Board Of Internal Medicine and American Board Of Surgery. Dr. Ong is currently accepting new patients.

    Experienced in Colorectal Cancer
    General Surgery | Surgical Oncology
    Experienced in Colorectal Cancer
    General Surgery | Surgical Oncology

    Swedish Surgical Specialists First Hill

    1221 Madison Street, Suite 1411, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Alassas is a 2021 Seattle Met Top Doctor Award winner. Dr. Alassas is a specialized surgical oncologist with extensive experience in complex abdominal and oncologic surgery. He is dedicated to delivering the best quality care and highest level of safety to his patients. His treatment philosophy is patient centered and tailored to each individual. Dr. Alassas' clinical approach is based on collaborating with the patient and their treatment team to formulate a treatment plan that delivers the best potential outcome. This includes paying attention to details pertaining to both the patient and the disease process, applying best practice measures and excellent surgical skills, and utilizing innovative and cutting edge treatment methods. Clinical interests include surgical oncology, peritoneal surface malignancies, soft tissue tumors, retroperitoneal tumors, melanoma metastasectomy, clinical research, cancer prevention, and personalized cancer treatment. Dr. Alassas is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Pancreatic Cancer, Pseudomyxoma Peritonei, Pancreatectomy, and Hepato-Pancreato-Biliary Surgery. Dr. Alassas is board certified in American Board Of Surgery. Dr. Alassas is currently accepting new patients.

    Experienced in Colorectal Cancer
    Gastroenterology
    Experienced in Colorectal Cancer
    Gastroenterology

    Swedish Gastroenterology - First Hill

    1221 Madison Street, Suite 1220, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    Dr. lIes-Shih has particular interests in inflammatory bowel diseases including Crohn’s disease and Ulcerative colitis, and colorectal screening. She believes that the best patient outcomes are achieved through careful listening, honest communication, and tailoring the best available evidence-based treatments to each patient’s unique circumstances and individual needs. Dr. Iles-Shih values her patient’s time and priorities and is grateful for the privilege of helping them attain optimal health through medical care that is prevention-focused, personalized, thorough, and efficient. Dr. Iles is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Viral Gastroenteritis, Colitis, Crohn's Disease, Endoscopy, and Gastrectomy. Dr. Iles is board certified in American Board Of Internal Medicine. Dr. Iles is currently accepting new patients.

    General Surgery
    General Surgery

    Swedish Surgical Specialists First Hill

    1221 Madison Street, Suite 1411, 
    Seattle, WA 
     (0.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    In his practice, Dr. Wells works to uphold the ideals of a doctor/patient relationship by providing the best medical care possible and always making the interests of the patients his highest priority. Dr. Wells is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Hernia, Ogilvie Syndrome, Gallbladder Disease, Gallbladder Removal, and Hernia Surgery. Dr. Wells is board certified in American Board Of Surgery. Dr. Wells is currently accepting new patients.

    Swedish Cancer Institute Rehabilitation Medicine - Cherry Hill

    1600 East Jefferson Street, Suite 300, 
    Seattle, WA 
     (1.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Dr. Herbert was selected by Seattle Met Magazine as a Top Doctor in 2022. Dr. Herbert is a cancer rehabilitation physiatrist, which means she believes in supporting cancer patients to live well, maintain or increase independence, and achieve personalized, patient-centered goals from work to social interactions to recreation. She sees patients across the continuum of their cancer journey: from shortly following diagnosis to beyond treatment and at all points in between, focusing on prevention of debility and increase in function. Dr. Herbert is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Smoldering Multiple Myeloma, Lymphedema, Meige Disease, and Primary Intestinal Lymphangiectasia. Dr. Herbert is board certified in American Board Of Physical Medicine And Rehabilitation. Dr. Herbert is currently accepting new patients.

    Elite in Colorectal Cancer
    Elite in Colorectal Cancer

    Rachel Loschiavo PA-C

    825 Eastlake Ave E, 
    Seattle, WA 
     (1.4 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Offers Telehealth

    Stacey Cohen is an Oncologist practicing medicine in Seattle, Washington. She has been practicing medicine for over 18 years. Dr. Cohen is rated as an Elite provider by MediFind in the treatment of Colorectal Cancer. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Lynch Syndrome, Pancreaticoduodenectomy, and Gastrostomy.

    Experienced in Colorectal Cancer
    Experienced in Colorectal Cancer

    Swedish Cancer Institute Medical Oncology - Ballard

    5300 Tallman Avenue Northwest, 
    Seattle, WA 
     (4.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    More people survive cancer now than ever before. I see my role as being a strong advocate for my patients, fully informing them of their options and supporting them throughout their treatment programs. Dr. Fer is rated as an Experienced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Inflammatory Breast Cancer, and Angiosarcoma. Dr. Fer is board certified in American Board Of Internal Medicine. Dr. Fer is currently accepting new patients.

    Distinguished in Colorectal Cancer
    Colorectal Surgery | General Surgery
    Distinguished in Colorectal Cancer
    Colorectal Surgery | General Surgery

    Virginia Mason Medical Center

    1100 Ninth Avenue, 
    Seattle, WA 
     (0.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ravi Moonka, MD, is a specialist in diseases of the colon and rectum, including cancer, tumors, diverticulitis, Crohn's disease, ulcerative colitis, rectal prolapse, ileostomy and colostomy reversal, and any other problem that can afflict the colon and rectum. Dr. Moonka is also an expert in the treatment of hernias, abdominal sarcomas, stomach cancer and gallstones.Dr. Moonka lives to make his patient's lives better. Sometimes he makes them a little better and sometimes a lot better. He does other things with his time, but nothing is more important or brings him more satisfaction than that. Dr. Moonka is rated as a Distinguished provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Familial Colorectal Cancer, Colorectal Cancer, Anal Cancer, Colostomy, and Hernia Surgery. Dr. Moonka is board certified in American Board Of Surgery and American Board Of Colon And Rectal Surgery. Dr. Moonka is currently accepting new patients.

    Distinguished in Colorectal Cancer
    General Surgery
    Distinguished in Colorectal Cancer
    General Surgery

    Gme Office University Of Washington

    1959 NE Pacific St, 
    Seattle, WA 
     (3.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mukta Krane is a General Surgeon practicing medicine in Seattle, Washington. Dr. Krane is rated as a Distinguished provider by MediFind in the treatment of Colorectal Cancer. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Anal Cancer, Hernia Surgery, and Bladder Reconstruction.

    Advanced in Colorectal Cancer
    Advanced in Colorectal Cancer

    Virginia Mason Medical Center

    1100 Ninth Avenue, 
    Seattle, WA 
     (0.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Vincent Picozzi, Jr., MD, specializes in pancreatic cancer, gastrointestinal cancer (pancreaticobiliary), genitourinary cancer, hematologic oncology (lymphomas) and myelodysplasia. Dr. Picozzi is rated as an Advanced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Pancreatic Cancer, Cholangiocarcinoma (Bile Duct Cancer), Pancreaticoduodenectomy, and Pancreatectomy. Dr. Picozzi is board certified in American Board Of Internal Medicine, Subspecialty In Hematology, Subspecialty In Medical Oncology. Dr. Picozzi is currently accepting new patients.

    Advanced in Colorectal Cancer
    General Surgery
    Advanced in Colorectal Cancer
    General Surgery

    Virginia Mason Medical Center

    1100 Ninth Avenue, 
    Seattle, WA 
     (0.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    "Scott Helton, MD, specializes in minimally invasive and open surgery of the liver, bile ducts, gallbladder, pancreas and spleen. He has a special interest in chronic pancreatitis, pancreatic cancer, liver cancer, bile duct tumors, repair of bile duct injuries, complex abdominal and inguinal hernias, and chronic groin pain after inguinal hernia repair.Dr. Helton is a Fellow of the American College of Surgeons.In his free time, Dr. Helton enjoys golfing, skiing and surfing.Curriculum VitaeAwards/AccoladesDirector, Liver, Pancreas and Biliary Surgical Center of Excellence, Virginia Mason, 2011-presentSenior Humanitarian Award; University of California, IrvineClosing Speaker, National Youth Leadership Foundation, ChicagoClinical Professor of Surgery, University of Washington, SeattlePast President, Seattle Surgical Society, 2020Past President, American Hepato-Pancreato-Biliary Association Foundation, 2012-2015Past President, American Hepato-Pancreato-Biliary Association, 2009-2010Past Treasurer, International Hepato-Pancreato-Biliary AssociationTeacher of the Year Award, Department of Surgery, Hospital of Saint Raphael, 2008Chairman, Department of Surgery, Hospital of St. Raphael's, CT, 2006-2011AOA Outstanding Clinical Director Teaching Award, UIC College of Medicine, 2005-2006Gastrointestinal Surgery Advisory Committee, American Board of Surgery, 2004-2009Olga Jonasson Award for Most Outstanding Teacher, Department of Surgery, University of Illinois, 2003Professor and Chair of Surgery, University of Illinois Chicago, 1998-2006Associate Professor of Surgery, University of Washington, 1996-1998Editorial Boards: HPB, Am J Surgery, World J Surgery, J of Pancreas, J Surgical Oncology, J Interventional Oncology, J Surgical Radiology, Gastrointestinal EndoscopySeattle Metropolitan Magazine, ""Seattle's Top Doctors"" 2011, 2012, 2013, 2015, 2016, 2019Castle Connolly Regional Top Doctor, 2019". Dr. Helton is rated as an Advanced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Pancreatic Cancer, Familial Pancreatic Cancer, Hernia, Pancreatectomy, and Gallbladder Removal. Dr. Helton is board certified in American Board Of Surgery. Dr. Helton is currently accepting new patients.

    Advanced in Colorectal Cancer
    Colorectal Surgery | General Surgery
    Advanced in Colorectal Cancer
    Colorectal Surgery | General Surgery

    Virginia Mason Medical Center

    1100 Ninth Avenue, 
    Seattle, WA 
     (0.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Val Simianu, MD, specializes in surgery for conditions of the colon, rectum and anal canal, such as cancer, inflammatory bowel disease, Crohn's disease and ulcerative colitis. He also treats pelvic floor problems such as prolapse and incontinence. He has specialty training in laparoscopic, robotic and trans-anal approaches for these conditions.Dr. Simianu works very closely with other specialists, such as gastroenterologists, oncologists, radiation oncologists and urogynecologists, to plan the best course of treatment for each patient. He enjoys playing a part in his patients' journeys to recovery.Beyond his clinical expertise, Dr. Simianu actively conducts research studies on colorectal cancer, diverticulitis, inflammatory bowel disease and pelvic health problems. He has a special interest in population health, health-services research and surgical education, and serves as the Medical Director of the colorectal service line for Virginia Mason Franciscan Health's Center for Digestive Health.Away from work, Dr. Simianu enjoys hiking, mountaineering, soccer, and traveling and exploring local cuisine with his wife.Watch Dr. Simianu on King 5 Seattle:Dispelling common myths around colon health - New Day NW. Dr. Simianu is rated as an Advanced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Familial Colorectal Cancer, Colorectal Cancer, Colostomy, and Appendectomy. Dr. Simianu is board certified in American Board Of Surgery, General Surgery and American Board Of Colon & Rectal Surgery. Dr. Simianu is currently accepting new patients.

    Advanced in Colorectal Cancer
    Gastroenterology
    Advanced in Colorectal Cancer
    Gastroenterology

    Virginia Mason Medical Center

    1100 Ninth Avenue, 
    Seattle, WA 
     (0.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gautam Mankaney, MD, is a board-certified gastroenterologist who specializes in hereditary cancer syndromes (lynch syndrome, familial adenomatous polyposis, PTEN-tumor hamartoma syndromes, juvenile polyposis, Peutz-Jeghers, Li-Fraumeni, MutYH-associated polyposis, sessile serrated polyposis), fecal microbiota transplantation, endoscopy, gastroenterology and gastrointestinal cancer.Dr. Mankaney has a special medical interest in treating individuals with a personal or family history of a hereditary cancer syndrome, or at high risk for developing cancer.Dr. Mankaney serves as both the Director of Endoscopy and Director of Gastrointestinal Cancer Prevention. Previously, he has served as a Committee Chair for the Collaborative Group of Americas on Inherited Gastrointestinal Syndromes, and as a Training Committee member with the American College of Gastroenterology. He has received multiple teaching awards.Away from work, he enjoys tennis, bouldering, hiking and traveling. Dr. Mankaney is rated as an Advanced provider by MediFind in the treatment of Colorectal Cancer. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Stomach Cancer, Colorectal Cancer, Colonoscopy, and Endoscopy. Dr. Mankaney is board certified in American Board Of Internal Medicine, Subspecialty In Gastroenterology. Dr. Mankaney is currently accepting new patients.

    Showing 1-20 of 215

    Last Updated: 04/28/2026

    What is the definition of Colorectal Cancer?

    Colorectal cancer (CRC), also known as colon cancer, is a cancer that occurs in the large intestine (colon) or rectum and is the third most diagnosed cancer in the U.S., appearing more frequently in older men and women over the age of 50. Colorectal cancer often begins with appearance of small, non-cancerous (benign) growths (polyps) in the lining of the colon that are without symptoms. Some of these polyps can eventually develop into tumors and become colorectal cancer. Not all polyps become cancerous. The risk of polyps developing into cancer depends on the type of polyps, of which there are two main types:   1) Adenomas are considered pre-cancerous because they sometimes become adenocarcinomas, which represent 96% of colorectal cancers. 2) Hyperplastic and inflammatory polyps occur more often and are usually non-cancerous. Additional risks for polyps becoming cancerous include their size, number, or whether they have abnormal cells. If a polyp does become cancerous, the cancer can spread into the lining of the colon or rectum, and eventually through other layers. Once inside the wall of the colon or rectum, the cancer can then spread into the blood vessels and lymph system (nodes) or other, distant parts of the body (metastasis).  A few other, less common colorectal cancers include: Carcinoid Tumors that arise from hormone-producing cells in the colon. Gastrointestinal Stromal Tumors (GISTs) that arise from special cells in the lining of the colon, and which can be either cancerous or non-cancerous (benign); however, GISTs do not commonly appear in the colon. Lymphomas, which are cancers that begin in lymph nodes. Sarcomas, which begin in the blood vessels, muscles, or connective tissues, and rarely appear as colorectal cancers. Colorectal cancer is classified based on the following stages: Stage 0 – Carcinoma in Situ: abnormal cells may be found in the lining (mucosa) of the colon or rectum. Stage I – Cancer has formed in the lining (mucosa) of the colon or rectal wall and has spread to the submucosa (outer layer) or the muscle layer. Stage II (IIA, IIB, IIC) – Cancer has spread through the muscle of the colon or rectum to the outer layer (serosa); Cancer has spread through the outer layer (serosa) to the lining of the abdomen (peritoneum); Cancer has spread through the outer layer (serosa) to other organs. Stage III (IIA, IIIB, IIIC) – Cancer has spread through the mucosa (inner layer), submucosa (outer layer), or muscle layer of colon or rectum, or through the colon or rectal wall to four-to-six lymph nodes; Cancer has spread through the mucosa (inner layer), submucosa (outer layer), or muscle layer of colon or rectum, or through the colon or rectal wall to the mucosa that lines the abdomen (peritoneum) and one-to-three lymph nodes, or four-to six lymph nodes, or seven or more lymph nodes; Cancer has spread to the mucosa lining the abdomen (peritoneum) and four-to six lymph nodes, or seven or more lymph nodes, or to nearby organs. Stage IV (IVA, IVB, IVC) – Cancer has spread to one area or organ not near the colon or rectum, such as liver, lung, ovary, or distant lymph node; Cancer has spread to more than one area or organ, such as liver, lung, ovary, or distant lymph node; Cancer has spread to the lining of the wall of the abdomen (peritoneum) and may have spread to other organs. The level of staging for colorectal cancer determines its treatment and outcomes (prognosis).

    What type of doctors treat colorectal cancer?  

    Colorectal cancer is treated by a team of specialists who collaborate to create the best care plan. Key doctors include: 

    • Colorectal surgeons: These specialists perform surgeries to remove cancerous tissues from the colon or rectum. They also handle complications or follow-up surgeries if needed. 
    • Medical oncologists: These doctors use treatments like chemotherapy, targeted therapy, or immunotherapy to manage cancer, especially if it has spread. 
    • Radiation oncologists: They use radiation therapy to shrink tumors or destroy cancer cells. Radiation is often used for rectal cancer. 
    • Gastroenterologists: These doctors focus on diagnosing and treating digestive system disorders. While they perform colonoscopies to detect cancer, they do not treat it. 

    A colorectal doctor typically refers to a colorectal surgeon, while a gastroenterologist focuses on diagnosing and managing digestive disorders. 

    What are the symptoms of colorectal cancer? 

    Colorectal cancer can cause different symptoms that vary from person to person. Common symptoms include: 

    • Persistent changes in bowel habits, like diarrhea, constipation, or stools that are narrower than usual 
    • Blood in the stool, which may appear bright red or dark 
    • Abdominal pain, cramping, or discomfort that doesn’t go away 
    • A feeling that the bowel doesn’t empty completely after a bowel movement 
    • Unexplained weight loss or loss of appetite 
    • Fatigue or weakness 

    Blood in the stool or subtle changes in bowel habits may be early warning signs of colorectal cancer. However, most people do not notice their symptoms until the cancer has progressed. That’s why regular screenings, such as colonoscopies starting at age 45 or earlier for high-risk individuals, are important for early detection.  

    How is colorectal cancer diagnosed?  

    Colorectal cancer diagnosis involves a combination of screening tools and diagnostic tests

    • Colonoscopy: A thin, flexible tube with a camera is inserted into the colon to check for abnormalities. If polyps or suspicious areas are found, a biopsy can be taken for testing. 
    • Stool-based tests: These include fecal occult blood tests (FOBT) or fecal immunochemical tests (FIT), which check for hidden blood, and stool DNA tests, which look for abnormal DNA changes. 
    • CT colonography (virtual colonoscopy): A less invasive imaging test that uses CT scans to create detailed pictures of the colon and rectum. 
    • Blood tests: While blood work, such as a carcinoembryonic antigen (CEA) test, can suggest cancer, it cannot confirm the diagnosis. Blood tests are often used to monitor the cancer’s progress or recurrence. 

    What can colorectal cancer be mistaken for?  

    Colorectal cancer can develop over many years without obvious symptoms. Some patients were misdiagnosed in the early stages of their cancer because their symptoms were similar to those of common health conditions, such as: 

    • Irritable bowel syndrome (IBS): A disorder causing abdominal discomfort, bloating, and changes in bowel habits. 
    • Hemorrhoids: Swollen blood vessels in the rectum or anus that can cause rectal bleeding. 
    • Diverticulitis: Inflammation or infection of small pouches in the colon. 
    • Infections: Intestinal infections can mimic symptoms like diarrhea or abdominal pain. 

    What is the life expectancy for someone with colorectal cancer?  

    The life expectancy for colorectal cancer depends on several factors, including the stage at diagnosis, overall health, and response to treatment.  

    The survival rates based on cancer stages are: 

    • Localized (early stage): If the cancer is confined to the colon or rectum, the 5-year survival rate is about 91%. Early detection offers the best chance for successful treatment. 
    • Regional spread: When cancer has spread to nearby lymph nodes or tissues, the 5-year survival rate drops to about 72%. 
    • Distant spread (metastatic cancer): If the cancer has spread to distant organs, such as the liver or lungs, the 5-year survival rate is approximately 15%. 

    These survival rates are averages, and outcomes will vary from person to person. Advances in treatment options, including targeted therapies and immunotherapy, continue to improve prognosis for many patients. 

    When should I see a Colorectal Cancer doctor near Seattle, WA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Colorectal Cancer doctor near Seattle, WA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Colorectal Cancer doctors near Seattle, WA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Colorectal Cancer doctors near Seattle, WA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Colorectal Cancer doctor near Seattle, WA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Colorectal Cancer doctor search results page. 

    Why is it important to get a second opinion from a different Colorectal Cancer doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Colorectal Cancer doctor near Seattle, WA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Colorectal Cancer doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Colorectal Cancer doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Colorectal Cancer doctors near Seattle, WA?

    Look for the filter feature on the left side of the Colorectal Cancer doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Colorectal Cancer doctor that offers video calls?

    Look for the filter feature on the left-side of the Colorectal Cancer doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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