The 20 Best Colonoscopy Doctors near Corte Madera, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 02/22/2026

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

MediFind found 122 doctor with experience in Colonoscopy near Corte Madera, CA. Of these, 105 are Experienced, 13 are Advanced, 3 are Distinguished and 1 are Elite.

Location
LocationClose
122 providers found
    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Permanente Medical Group Inc.

    2238 Geary Blvd, 
    San Francisco, CA 
     (10.9 miles away)
    Languages Spoken:
    English

    Douglas Corley is a Gastroenterologist in San Francisco, California. Dr. Corley is rated as an Elite provider by MediFind in Colonoscopy. His top areas of expertise are Colorectal Cancer, Barrett Esophagus, Familial Colorectal Cancer, Colonoscopy, and Endoscopy.

    Mary A. Whooley
    Distinguished in Colonoscopy
    Internal Medicine
    Distinguished in Colonoscopy
    Internal Medicine
    4150 Clement St, Mail Stop 111a1, 
    San Francisco, CA 
     (10.0 miles away)
    Languages Spoken:
    English

    Mary Whooley is a primary care provider, practicing in Internal Medicine in San Francisco, California. Dr. Whooley is rated as a Distinguished provider by MediFind in Colonoscopy. Her top areas of expertise are Coronary Heart Disease, Heart Failure, Heart Attack, Colonoscopy, and Endoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Marinhealth Gastroenterology | A UCSF Health Clinic

    200 Tamal Plz Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Natalie Lee is a Gastroenterologist in Corte Madera, California. Dr. Lee is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Gastritis, Chronic Erosive Gastritis, Hemorrhoids, Colonoscopy, and Gastrectomy.

    Learn about our expert tiers
    Distinguished in Colonoscopy
    Gastroenterology
    Distinguished in Colonoscopy
    Gastroenterology

    San Francisco VA Medical Center

    4150 Clement St, 
    San Francisco, CA 
     (10.0 miles away)
    Languages Spoken:
    English

    Amandeep Shergill is a primary care provider, practicing in Gastroenterologist in San Francisco, California. Dr. Shergill is rated as a Distinguished provider by MediFind in Colonoscopy. Her top areas of expertise are Gastrointestinal Bleeding, Choledocholithiasis, Viral Gastroenteritis, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Marinhealth Gastroenterology | A UCSF Health Clinic

    200 Tamal Plz Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Christopher Hogan is a Gastroenterologist in Corte Madera, California. Dr. Hogan is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Heartburn, Ulcerative Colitis, Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Office

    200 Tamal Vista Blvd Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    Wendy Davis is a Gastroenterologist in Corte Madera, California. Dr. Davis is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Office

    200 Tamal Vista Blvd Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    John Bettinger is a Gastroenterologist in Corte Madera, California. Dr. Bettinger is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Trichohepatoenteric Syndrome, Pancreatic Cancer, Familial Pancreatic Cancer, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Office

    200 Tamal Vista Blvd Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English

    Timothy Sowerby is a Gastroenterologist in Corte Madera, California. Dr. Sowerby is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Chronic Idiopathic Constipation (CIC), Irritable Bowel Syndrome (IBS), Lymphocytic Colitis, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Marinhealth Gastroenterology | A UCSF Health Clinic

    200 Tamal Plz Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    Elijah Verheyen is a Gastroenterologist in Corte Madera, California. Dr. Verheyen has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hiatal Hernia, Liver Failure, Ascites, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Marinhealth Gastroenterology | A UCSF Health Clinic

    200 Tamal Plz Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ripple Sharma is a Gastroenterologist in Corte Madera, California. Dr. Sharma is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Familial Adenomatous Polyposis, Diarrhea, Trichohepatoenteric Syndrome, Gastrectomy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Marinhealth Gastroenterology | A UCSF Health Clinic

    200 Tamal Plz Ste 200, 
    Corte Madera, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sirisha Grandhe is a Gastroenterologist in Corte Madera, California. Dr. Grandhe is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Crohn's Disease, Indigestion, Proctitis, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Navneet Attri is an Internal Medicine provider in Greenbrae, California. Dr. Attri is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Gallbladder Disease, Chronic Inflammatory Response Syndrome (CIRS), Liver Failure, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Ray Brindley is an Internal Medicine provider in Greenbrae, California. Dr. Brindley is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gallbladder Disease, Saddle Pulmonary Embolism, Heart Failure with Preserved Ejection Fraction (HFpEF), Colonoscopy, and Pacemaker Implantation.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Michael Vaughan is a Family Medicine provider in Greenbrae, California. Dr. Vaughan is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Adrenal Insufficiency Pediatric, Gallbladder Disease, Chronic Inflammatory Response Syndrome (CIRS), Colonoscopy, and Hip Replacement.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Son Nguyen is a primary care provider, practicing in Internal Medicine in Greenbrae, California. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Sepsis, Low Sodium Level, Acute Kidney Failure, Liver Embolization, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Susan Nguyen is a primary care provider, practicing in Internal Medicine in Greenbrae, California. Dr. Nguyen is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Pericarditis, Dehydration, Sepsis, Gastrostomy, and Hip Replacement.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Denis Glenn is an Internal Medicine provider in Greenbrae, California. Dr. Glenn is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are End-Stage Renal Disease (ESRD), Acute Kidney Failure, Necrosis, Colonoscopy, and Ureteroscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Susan Sun is an Internal Medicine provider in Greenbrae, California. Dr. Sun is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Protein Deficiency, Gallbladder Disease, Heart Failure with Preserved Ejection Fraction (HFpEF), Ureteroscopy, and Pacemaker Implantation.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Naira Sanoyan is a primary care provider, practicing in Internal Medicine in Greenbrae, California. Dr. Sanoyan is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Sepsis, Pneumonia, Atypical Pneumonia, Colonoscopy, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Marin General Hospital

    250 Bon Air Rd, 
    Greenbrae, CA 
     (1.6 miles away)
    Languages Spoken:
    English

    Thato Brumwell is an Internal Medicine provider in Greenbrae, California. Dr. Brumwell is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Protein Deficiency, Chronic Inflammatory Response Syndrome (CIRS), Fractured Spine, Ureteroscopy, and Endoscopy.

    Showing 1-20 of 122

    Last Updated: 02/22/2026

    What is the definition of Colonoscopy?

    A colonoscopy is an exam that views the inside of the colon (large intestine) and rectum, using a tool called a colonoscope.

    The colonoscope has a small camera attached to a flexible tube that can reach the entire length of the colon.

    When should I see a Colonoscopy doctor near Corte Madera, 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 Colonoscopy doctor near Corte Madera, 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 Colonoscopy doctors near Corte Madera, 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 Colonoscopy doctors near Corte Madera, 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 Colonoscopy doctor near Corte Madera, 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 Colonoscopy doctor search results page. 

    Why is it important to get a second opinion from a different Colonoscopy 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 Colonoscopy doctor near Corte Madera, 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 Colonoscopy 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 Colonoscopy 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 Colonoscopy doctors near Corte Madera, CA?

    Look for the filter feature on the left side of the Colonoscopy 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 Colonoscopy doctor that offers video calls?

    Look for the filter feature on the left-side of the Colonoscopy 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