Filters

Distance
    Level of Expertise
    Availability
    Gender
    Years of Experience
    Insurance
    Specialty
    Additional Specialty
    Language

    Last Updated: 01/09/2026

    Save doctors for later
    Sign Up
    Not sure about your diagnosis?
    Check Your Symptoms
    Already have a doctor?
    Find A Second Opinion

    MediFind found 105 doctor with experience in Gastrointestinal Stromal Tumor near Scottsdale, AZ. Of these, 97 are Experienced, 6 are Advanced, 1 are Distinguished and 1 are Elite.

    Location
    LocationClose
    105 providers found
      Elite in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology
      Elite in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology

      Honorhealth Ambulatory

      7400 E Thompson Peak Pkwy, 
      Scottsdale, AZ 
       (12.1 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Michael Gordon is a Hematologist Oncology specialist and a Hematologist in Scottsdale, Arizona. Dr. Gordon is rated as an Elite provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Gastrointestinal Stromal Tumor, Lung Cancer, Colorectal Cancer, and Melanoma. Dr. Gordon is currently accepting new patients.

      Experienced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Oncology | Hematology

      Honorhealth Ambulatory

      7400 E Osborn Rd, 
      Scottsdale, AZ 
       (0.4 miles away)
      Languages Spoken:
      English, Spanish
      Accepting New Patients
      Offers Telehealth

      Andrew Buresh is a Hematologist Oncology specialist and an Oncologist in Scottsdale, Arizona. Dr. Buresh is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Thrombocytopenia, Essential Thrombocythemia, Familial Pancreatic Cancer, and Paget Disease of the Breast. Dr. Buresh is currently accepting new patients.

      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology

      Palo Verde Hematology Oncology Ltd

      7373 N Scottsdale Rd, E100, 
      Scottsdale, AZ 
       (3.5 miles away)
      Languages Spoken:
      English, Hindi, Urdu
      Accepting New Patients
      Offers Telehealth

      Nazish Ahmad is an Oncologist and a Hematologist in Scottsdale, Arizona. Dr. Ahmad is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Pulmonary Embolism, Deep Vein Thrombosis, Thrombocytopenia, and Familial Colorectal Cancer. Dr. Ahmad is currently accepting new patients.

      Learn about our expert tiers
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology Oncology | Hematology

      Palo Verde Hematology Oncology Ltd

      7373 N Scottsdale Rd, E100, 
      Scottsdale, AZ 
       (3.5 miles away)
      Languages Spoken:
      English
      Offers Telehealth

      Rajinder Grover is an Oncologist and a Hematologist Oncology provider in Scottsdale, Arizona. Dr. Grover is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Deep Vein Thrombosis, Pulmonary Embolism, Thrombocytopenia, Childhood Iron Deficiency Anemia, and Bone Marrow Aspiration.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Advanced Radiology And Interventional Associates Inc

      8213 E Del Cristal Dr, 
      Scottsdale, AZ 
       (4.7 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Claude Frey is a Radiologist in Scottsdale, Arizona. Dr. Frey is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pleurisy, Pleural Effusion, Scoliosis, and Pectus Excavatum. Dr. Frey is currently accepting new patients.

      Experienced in Gastrointestinal Stromal Tumor
      General Surgery | Surgical Oncology
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery | Surgical Oncology

      Honorhealth Ambulatory

      8415 N Pima Rd, Suite 280, 
      Scottsdale, AZ 
       (4.7 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Aryan Modasi is a General Surgeon and a Surgical Oncologist in Scottsdale, Arizona. Dr. Modasi is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pancreatic Cancer, Hernia, Familial Pancreatic Cancer, Hepato-Pancreato-Biliary Surgery, and Gallbladder Removal. Dr. Modasi is currently accepting new patients.

      Experienced in Gastrointestinal Stromal Tumor
      Colorectal Surgery
      Experienced in Gastrointestinal Stromal Tumor
      Colorectal Surgery

      Banner-University Medicine Rheumatology Clinic

      1441 N 12th St Fl 3, 
      Phoenix, AZ 
       (7.6 miles away)
      Languages Spoken:
      English
      Offers Telehealth

      Eugene Kim is a Colorectal Surgeon in Phoenix, Arizona. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Gastroesophageal Junction Cancer, Hernia Surgery, and Bladder Reconstruction.

      Advanced in Gastrointestinal Stromal Tumor
      General Surgery
      Advanced in Gastrointestinal Stromal Tumor
      General Surgery
      10250 N 92nd St Ste 307, 
      Scottsdale, AZ 
       (5.0 miles away)
      Languages Spoken:
      English

      Bruce Freedman is a General Surgeon in Scottsdale, Arizona. Dr. Freedman is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Hernia, Gastrointestinal Stromal Tumor, Mesenchymoma, Hernia Surgery, and Gastrectomy.

      Keng-yu Chuang
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology

      District Medical Group

      2929 E Thomas Rd, 
      Phoenix, AZ 
       (5.6 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Keng-yu Chuang is a Gastroenterologist in Phoenix, Arizona. Dr. Chuang is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Crohn's Disease, Familial Colorectal Cancer, Childhood Volvulus, Endoscopy, and Gastrectomy. Dr. Chuang is currently accepting new patients.

      Advanced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology
      Advanced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology

      Ironwood Physicians PC

      8880 E Desert Cove Ave, 
      Scottsdale, AZ 
       (6.5 miles away)
      Languages Spoken:
      English, Hindi, Spanish, Telugu
      Accepting New Patients
      Offers Telehealth

      Rajesh Kukunoor is a Hematologist Oncology specialist and a Hematologist in Scottsdale, Arizona. Dr. Kukunoor is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pleuropulmonary Blastoma, Breast Cancer, Paget Disease of the Breast, and Severe Congenital Neutropenia. Dr. Kukunoor is currently accepting new patients.

      Puneet Bhalla
      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Ironwood Physicians, PC

      11209 N Tatum Blvd, Ste 260, 
      Phoenix, AZ 
       (7.1 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Puneet Bhalla is a board certified Medical Oncologist and joined Ironwood Cancer & Research Centers in September 2006. Dr. Bhalla is a graduate of Bangalore Medical College, Bangalore University. He completed his Internal Medicine residency and Medical Oncology fellowship from William Beaumont Hospital, Royal Oak, Michigan. His research has been published in national and international oncology meetings and he remains actively involved in research at Ironwood Cancer & Research Centers. He has been practicing in the East Valley since 2003, initially in solo practice and since 2006 as part of Ironwood Cancer & Research Centers. He also serves on the Dignity Health East Valley Board of Directors for Mercy Gilbert and Chandler Regional Hospitals.A strong patient advocate, he routinely picks up the phone to communicate with other physicians and health insurance companies on his patients behalf. He has been nominated as Top Doc in medical oncology by his peers several times in Phoenix Magazine. As an extended faculty at Midwestern University he mentors medical students during their Oncology rotations. He is well respected by his peers in the community for his expertise in solid tumors.He lives in the Phoenix area with his wife and twin daughters and dog Frodo! In his spare time, he may be seen hiking with his family, riding his road bike or camping in the AZ high country. Dr. Bhalla is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pleuropulmonary Blastoma, Lung Cancer, Myelodysplastic Syndrome (MDS), and Familial Colorectal Cancer.

      Chad C. Cherington
      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Ironwood Physicians, PC

      1432 S Dobson Road, Suite 106, 
      Mesa, AZ 
       (7.8 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Cherington joined Ironwood Cancer &  Research Centers in July 2016 after completing his fellowship in Hematology and Medical Oncology at the Mayo clinic.  An Arizona native, he earned undergraduate degrees in Biology and Spanish at Arizona State University prior to attending the University of Arizona for his medical doctorate.  Dr. Cherington has presented research at ASCO and ASH and authored several research articles. However, what he values most is receiving the Gold Humanism Award, which recognizes him as possessing the personal characteristics that colleagues themselves would look for in a physician for themselves or their family members. Early in his youth, Dr. Cherington developed a passion to fight cancer when a childhood friend was diagnosed with a rare brain tumor.  His friend's cancer was aggressive, and her life was ultimately lost, but her tumor cells were donated to research new therapies. Years later, Dr. Cherington spent time at Barrow Neurological Institute investigating cell lines that most likely included his friend's saved cells. The fire that was ignited as a child was further fueled when Dr. Cherington's step-sister lost her life to cancer as a young adult. Today, in each new patient, Dr. Cherington sees a friend or family member who deserves the utmost compassion and expertise that modern medicine has to offer.Outside of work, Dr. Cherington enjoys hiking, exploring Arizona, sports, and spending time with his three children, his dog, and his beautiful wife.  Together, they are passionate about continually moving toward adopting lifestyle factors to prevent or slow cancer.  Dr. Cherington promotes using healthful lifestyle changes in conjunction with the best cancer treatment modern medicine has to offer to continually work towards a cure. Dr. Cherington is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Oligodendroglioma, Astrocytoma, Gliosarcoma, and Ependymoma.

      Karen O. Cruz
      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Ironwood Physicians, PC

      1432 S Dobson Road, Suite 106, 
      Mesa, AZ 
       (7.8 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Ortiz Cruz joined Ironwood Cancer & Research Center in September 2014, after completing her hematology and medical oncology fellowship at the University of South Carolina in Charleston. She completed two years of research at the National Cancer Institute | National Institutes of Health in Bethesda Maryland where she was involved with clinical research in radiation oncology in addition to work with medical oncology. Dr. Ortiz Cruz also completed an internal medicineresidency training program at Banner Good Samaritan Medical Center in Phoenix. She has published several articles in scientific journals and presented at various meetings. Dr. Cruz's specializes in solid tumor and hematologic disorders with a special interest in breast, colon cancer and lymphoma. Dr. Cruz's goal is to deliver the best care available for her patients by providing personalized treatment planning in conjunction with cutting-edge therapy.Dr. Cruz's personal goal is to deliver the best care available for her patients with the understanding that personalized treatment planning in conjunction with utilizing cutting-edge therapy is the best means to achieve this goal. Dr. Cruz is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Breast Cancer, Severe Congenital Neutropenia, Paget Disease of the Breast, and Agranulocytosis.

      Mital S. Patel
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology

      Dignity Health Cancer Institute At St. Joseph's

      625 N 6th Street, 
      Phoenix, AZ 
       (8.7 miles away)
      Languages Spoken:
      English, Gujarati , Hindi, Marathi
      Accepting New Patients
      Offers Telehealth

      My mission, along with the Dignity Health Medical Group, is to focus on innovative clinical care and the pursuit of excellence through scholarly activities. This allows me to provide patients with state-of-the-art patient services and exceptional patient experiences. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Neuroendocrine Tumor, Familial Pancreatic Cancer, Cholangiocarcinoma (Bile Duct Cancer), and Familial Colorectal Cancer.

      Vamsee K. Torri
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology

      Dignity Health Cancer Institute At St. Joseph's

      625 N 6th Street, 
      Phoenix, AZ 
       (8.7 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Vamsee Torri is a Hematologist and an Oncologist in Phoenix, Arizona. Dr. Torri is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Familial Colorectal Cancer, Muscle Invasive Bladder Cancer, Lung Cancer, and Non-Small Cell Lung Cancer (NSCLC). Dr. Torri is currently accepting new patients.

      Jeffrey A. Brink
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery

      SJHMC Transplant Center

      500 W Thomas Rd, Suite 300, 
      Phoenix, AZ 
       (9.2 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Jeffrey Brink is a General Surgeon in Phoenix, Arizona. Dr. Brink is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Familial Pancreatic Cancer, Pancreatic Cancer, Hepatitis, Liver Transplant, and Pancreatectomy. Dr. Brink is currently accepting new patients.

      Divyesh Sejpal
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology

      Dignity Health Medical Group Gastroenterology - St. Joseph's

      500 W Thomas Rd, Suite 100, 
      Phoenix, AZ 
       (9.2 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Divyesh Sejpal is a Gastroenterologist in Phoenix, Arizona. Dr. Sejpal is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pancreatic Pseudocyst, Choledocholithiasis, Barrett Esophagus, Endoscopy, and Lithotripsy. Dr. Sejpal is currently accepting new patients.

      James L. Cashman
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery

      SJHMC Transplant Center

      500 W Thomas Rd, Suite 300, 
      Phoenix, AZ 
       (9.2 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Cashman's expertise includes organ transplantation, cancer of the liver and pancreas, and complex hepatobiliary disease. He is also proficient in minimally invasive robotic and laparoscopic surgical procedures for pancreas, liver, kidney, and adrenal disease. He is Board Certified by the American Board of Surgery and is a member of serveral medical societies. Our goal is to provide you with exceptional patient care; committing to the highest level of integrity, ethics and honesty. Dr. Cashman is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pancreatic Cancer, Familial Pancreatic Cancer, Pancreatic Adenoma, Pancreatectomy, and Splenectomy.

      Advanced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology
      Advanced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology

      Mayo Clinic Arizona

      13400 E Shea Blvd, 
      Scottsdale, AZ 
       (9.6 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Mahesh Seetharam is a Hematologist Oncology specialist and a Hematologist in Scottsdale, Arizona. Dr. Seetharam is rated as an Advanced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Adult Soft Tissue Sarcoma, Alveolar Soft Part Sarcoma, Bone Tumor, Melanoma, and Bone Marrow Aspiration. Dr. Seetharam is currently accepting new patients.

      Richard J. Bold
      Experienced in Gastrointestinal Stromal Tumor
      Surgical Oncology | General Surgery
      Experienced in Gastrointestinal Stromal Tumor
      Surgical Oncology | General Surgery

      Mayo Clinic Arizona

      13400 E Shea Blvd, 
      Scottsdale, AZ 
       (9.6 miles away)
      Languages Spoken:
      English

      Richard Bold is a Surgical Oncologist and a General Surgeon in Scottsdale, Arizona. Dr. Bold is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pancreatic Cancer, Breast Cancer, Familial Pancreatic Cancer, Pancreatectomy, and Mastectomy.

      Showing 1-20 of 105

      Last Updated: 01/09/2026

      What is the definition of Gastrointestinal Stromal Tumor?

      A gastrointestinal stromal tumor (GIST) is a type of tumor that occurs in the gastrointestinal tract, most commonly in the stomach or small intestine. This type of tumor is thought to grow from specialized cells found in the gastrointestinal tract called interstitial cells of Cajal (ICCs) or precursors to these cells. Affected individuals can develop one or more tumors. GISTs are usually found in adults between ages 40 and 70; rarely, children and young adults develop this type of tumor.

      When should I see a Gastrointestinal Stromal Tumor doctor near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor doctor near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor doctors near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor doctors near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor doctor near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor doctor search results page. 

      Why is it important to get a second opinion from a different Gastrointestinal Stromal Tumor 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 Gastrointestinal Stromal Tumor doctor near Scottsdale, AZ?

      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 Gastrointestinal Stromal Tumor 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 Gastrointestinal Stromal Tumor 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 Gastrointestinal Stromal Tumor doctors near Scottsdale, AZ?

      Look for the filter feature on the left side of the Gastrointestinal Stromal Tumor 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 Gastrointestinal Stromal Tumor doctor that offers video calls?

      Look for the filter feature on the left-side of the Gastrointestinal Stromal Tumor 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 

      Read more about our Content Policy

      More Gastrointestinal Stromal Tumor Doctors by city