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 15 doctor with experience in Gastrointestinal Stromal Tumor near Thousand Oaks, CA. Of these, 15 are Experienced.

    Location
    LocationClose
    15 providers found
      Experienced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology
      Experienced in Gastrointestinal Stromal Tumor
      Hematology Oncology | Hematology | Oncology

      The Regents Of The University Of California

      100 Moody Ct, Suite 200, 
      Thousand Oaks, CA 
       (0.9 miles away)
      Experience:
      18+ years
      Languages Spoken:
      English

      Samuel Slomowitz is a Hematologist Oncology specialist and a Hematologist in Thousand Oaks, California. Dr. Slomowitz has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Paget Disease of the Breast, Familial Pancreatic Cancer, and Bone Marrow Aspiration.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      UCLA Radiology Medical Group

      100 Moody Ct, 
      Thousand Oaks, CA 
       (0.9 miles away)
      Languages Spoken:
      English

      Rinat Masamed is a Radiologist in Thousand Oaks, California. Dr. Masamed is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Visceromegaly, Gallbladder Disease, Thyroid Nodule, and Colonic Malakoplakia.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Beverly Radiology Medical Group Iii

      415 Rolling Oaks Dr, Suite 125and160, 
      Thousand Oaks, CA 
       (1.2 miles away)
      Languages Spoken:
      English

      Irwin Grossman is a Radiologist in Thousand Oaks, California. Dr. Grossman is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Scoliosis, Melorheostosis, Melorheostosis with Osteopoikilosis, and Osteopenia.

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

      City Of Hope Medical Foundation

      425 Haaland Dr, Suite 101, 
      Thousand Oaks, CA 
       (1.2 miles away)
      Languages Spoken:
      English
      Offers Telehealth

      Ashwin Kashyap is a Hematologist Oncology specialist and an Oncologist in Thousand Oaks, California. Dr. Kashyap is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Richter Syndrome, and Non-Hodgkin Lymphoma.

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

      City Of Hope Medical Foundation

      425 Haaland Dr, Suite 101, 
      Thousand Oaks, CA 
       (1.2 miles away)
      Languages Spoken:
      English

      David Litvak is a Surgical Oncologist and a General Surgeon in Thousand Oaks, California. Dr. Litvak is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pseudomyxoma Peritonei, Gallbladder Disease, Gallstones, Hernia Surgery, and Small Bowel Resection.

      Experienced in Gastrointestinal Stromal Tumor
      General Surgery | Surgical Oncology
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery | Surgical Oncology
      555 Marin St, Suite 210, 
      Thousand Oaks, CA 
       (1.9 miles away)
      Languages Spoken:
      English

      David Chi is a General Surgeon and a Surgical Oncologist in Thousand Oaks, California. Dr. Chi is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Breast Cancer, Choledocholithiasis, Paget Disease of the Breast, Hernia Surgery, and Lymphadenectomy.

      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology
      Experienced in Gastrointestinal Stromal Tumor
      Oncology | Hematology
      1157 Swallow Lane, 
      Simi Valley, CA 
       (6.6 miles away)
      Languages Spoken:
      English
      Offers Telehealth

      Bahareh Bahadini is a Hematologist and an Oncologist in Simi Valley, California. Dr. Bahadini is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Inflammatory Breast Cancer, Breast Cancer, Angiosarcoma, and Paget Disease of the Breast.

      Karen L. Simon
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology

      Ventura County Gastroenterology Group

      4005 Mission Oaks Blvd, Ste A, 
      Camarillo, CA 
       (10.0 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Karen Simon received her B.A. from Stanford University in 1996. She then attended Northwestern University for medical school. She completed her residency at Cedars-Sinai Medical Center in 2004 and her fellowship at UCLA and Cedars in 2008.Dr. Simon has proudly been serving patients in Ventura County since 2008 and is very involved in field research. Dr. Simon is also a speaker for Exact Sciences on behalf of Cologuard and is actively associated in research studies. She is a part of the Takeda Chloride Channel Council and a speaker for Amitiza, as well.She enjoys educating the doctors and the community as a lecturer on topics such as colorectal cancer screening at St. John's Hospital, where she is also a part of the Ethics Committee.Dr. Simon aims specifically to work with patients to discover the problem and develop a treatment strategy. She has a particular interest in Celiac Disease, Inflammatory Bowel Disease (IBD), and a passion for improving colorectal cancer detection.She is dedicated to developing a relationship with patients by utilizing education and mutual information sharing. Dr. Simon is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Painful Swallowing, Endoscopy, and Colonoscopy.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      UCLA Radiology Medical Group

      26585 Agoura Rd, Suite 210, 
      Calabasas, CA 
       (8.6 miles away)
      Experience:
      18+ years
      Languages Spoken:
      English

      Kathleen Ruchalski is a Radiologist in Calabasas, California. Dr. Ruchalski has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Lung Nodules, Pleurisy, Pleural Effusion, and ALK-Positive Non-Small Cell Lung Cancer.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      Radiology Of Indiana P C

      3421 Deep Waters Ct, 
      Simi Valley, CA 
       (10.0 miles away)
      Experience:
      18+ years
      Languages Spoken:
      English
      Accepting New Patients

      Lien Doan is a Radiologist in Simi Valley, California. Dr. Doan has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. Her top areas of expertise are Gallbladder Disease, Biliary Dyskinesia, Gastrointestinal Stromal Tumor, and Visceromegaly. Dr. Doan is currently accepting new patients.

      Experienced in Gastrointestinal Stromal Tumor
      Experienced in Gastrointestinal Stromal Tumor

      West Valley Radiology Medical Group Inc

      3421 Deep Waters Ct, 
      Simi Valley, CA 
       (10.0 miles away)
      Languages Spoken:
      English

      David Aufrichtig is a Radiologist in Simi Valley, California. Dr. Aufrichtig is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Progressive Familial Intrahepatic Cholestasis Type 3, Progressive Familial Intrahepatic Cholestasis Type 2, Progressive Familial Intrahepatic Cholestasis Type 1, Visceromegaly, and Bone Marrow Aspiration.

      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      7301 Medical Center Drive, Suite 201, 
      West Hills, CA 
       (12.7 miles away)
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Cyrus Badii is a Gastroenterologist in West Hills, California. Dr. Badii is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Hiatal Hernia, Congenital Diaphragmatic Hernia, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Gastrostomy. Dr. Badii is currently accepting new patients.

      Joseph S. Lopresti
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery
      Experienced in Gastrointestinal Stromal Tumor
      General Surgery

      General Surgery Medical Group

      2460 Ponderosa Dr. North #A-117, 
      Camarillo, CA 
       (13.7 miles away)
      Languages Spoken:
      English
      Accepting New Patients

      Offers high-quality, individualized care with compassion. Believes communication and collaboration with patients is the foundation for effective relationships. Through effective education, patients are empowered to partner in their care and achieve their health goals. Dr. Lopresti is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Choledocholithiasis, Gallstones, Gallbladder Disease, Bladder Reconstruction, and Hernia Surgery.

      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology
      Experienced in Gastrointestinal Stromal Tumor
      Gastroenterology

      UCLA Health West Hills Primary & Specialty Care

      7345 Medical Center Dr Ste 420, 
      West Hills, CA 
       (12.6 miles away)
      Languages Spoken:
      English
      Offers Telehealth

      Danny Issa is a Gastroenterologist in West Hills, California. Dr. Issa is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Jaundice, Superior Mesenteric Artery Syndrome (SMAS), Nonalcoholic Steatohepatitis (NASH), Endoscopy, and Gastrectomy.

      Experienced in Gastrointestinal Stromal Tumor
      Interventional Radiology | Radiology
      Experienced in Gastrointestinal Stromal Tumor
      Interventional Radiology | Radiology

      Southern California Permanente Medical Group

      5601 De Soto Ave, 
      Woodland Hills, CA 
       (14.8 miles away)
      Languages Spoken:
      English
      Accepting New Patients

      Robert Lieberman is an Interventional Radiologist and a Radiologist in Woodland Hills, California. Dr. Lieberman is rated as an Experienced provider by MediFind in the treatment of Gastrointestinal Stromal Tumor. His top areas of expertise are Pleurisy, Pleural Effusion, Gallbladder Disease, Bone Marrow Aspiration, and Gastrostomy. Dr. Lieberman is currently accepting new patients.

      Showing 1-15 of 15

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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 Thousand Oaks, CA?

      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