The 20 Best Colonoscopy Doctors in California, US

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 04/28/2026

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MediFind found 2489 doctor with experience in Colonoscopy near California, US. Of these, 2211 are Experienced, 255 are Advanced, 12 are Distinguished and 8 are Elite.

Location
LocationClose
2,489 providers found
    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Office

    3801 Miranda Ave # 111, 
    Palo Alto, CA 
    Languages Spoken:
    English

    Tonya Kaltenbach is a Gastroenterologist practicing medicine in Palo Alto, California. Dr. Kaltenbach is rated as an Elite provider by MediFind in Colonoscopy. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Colorectal Polyps, Colorectal Cancer, Turcot Syndrome, Colonoscopy, and Endoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Anesthesia Preoperative Evaluation Clinic At Stanford Medicine Outpatient Center

    420 Broadway St, 
    Redwood City, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Uri Ladabaum is a Gastroenterologist practicing medicine in Redwood City, California. Dr. Ladabaum is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Kaiser Permanente Walnut Creek Medical Center - Gastroenterology

    1515 Newell Avenue, 
    Walnut Creek, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Theodore Levin is a Gastroenterologist practicing medicine in Walnut Creek, California. Dr. Levin is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Levin is currently accepting new patients.

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

    Permanente Medical Group Inc.

    2238 Geary Blvd, 
    San Francisco, CA 
    Languages Spoken:
    English

    Douglas Corley is a Gastroenterologist practicing medicine in San Francisco, California. Dr. Corley is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Barrett Esophagus, Familial Colorectal Cancer, Colonoscopy, and Endoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Office

    5767 W Century Blvd Ste 200, 
    Los Angeles, CA 
    Languages Spoken:
    English

    Ian Gralnek is a Gastroenterologist practicing medicine in Los Angeles, California. Dr. Gralnek is rated as an Elite provider by MediFind in Colonoscopy. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Gastrointestinal Bleeding, Esophageal Varices, Colorectal Cancer, Endoscopy, and Colonoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    UCI Health H.H. Chao Comprehensive Digestive Disease Center

    101 The City Dr S Bldg 22C, 
    Orange, CA 
    Languages Spoken:
    English

    Jason Samarasena is a Gastroenterologist practicing medicine in Orange, California. Dr. Samarasena is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 53 other conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Jaundice, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    George Triadafilopoulos MD Inc

    2490 Hospital Dr Ste 211, 
    Mountain View, CA 
    Languages Spoken:
    English

    Roy Soetikno is a Gastroenterologist practicing medicine in Mountain View, California. Dr. Soetikno is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Colorectal Polyps, Colorectal Cancer, Gastrointestinal Bleeding, Endoscopy, and Colonoscopy.

    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology

    Anesthesia Preoperative Evaluation Clinic At Stanford Medicine Outpatient Center

    420 Broadway St, 
    Redwood City, CA 
    Languages Spoken:
    English
    Offers Telehealth

    Shai Friedland is a Gastroenterologist practicing medicine in Redwood City, California. Dr. Friedland is rated as an Elite provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Colorectal Cancer, Barrett Esophagus, Colorectal Polyps, Endoscopy, and Colonoscopy.

    Distinguished in Colonoscopy
    Gastroenterology
    Distinguished in Colonoscopy
    Gastroenterology

    Office

    9350 Campus Point Dr Ste 2B, 
    La Jolla, CA 
    Languages Spoken:
    English

    William Sandborn is a Gastroenterologist practicing medicine in La Jolla, California. Dr. Sandborn is rated as a Distinguished provider by MediFind in Colonoscopy. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Hemorrhagic Proctocolitis, Ulcerative Colitis, Endoscopy, and Colonoscopy.

    Distinguished in Colonoscopy
    Internal Medicine
    Distinguished in Colonoscopy
    Internal Medicine
    4150 Clement St, Mail Stop 111a1, 
    San Francisco, CA 
    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. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Coronary Heart Disease, Heart Failure, Heart Attack, Colonoscopy, and Endoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Solo Practice - Malik, I

    2800 N California St, Ste 7, 
    Stockton, CA 
    Languages Spoken:
    English, Punjabi, Urdu
    Accepting New Patients
    Offers Telehealth

    Iftikhar Malik is a Gastroenterologist practicing medicine in Stockton, California. Dr. Malik is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Non-Alcoholic Fatty Liver Disease, Gallbladder Disease, Intestinal Cancer, Colonoscopy, and Endoscopy. Dr. Malik is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Sutter Health Ambulatory Care Center And Surgery Center

    2506 Samaritan Court, Floor 3, 
    San Jose, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edward Huang is a Gastroenterologist practicing medicine in San Jose, California. Dr. Huang is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Anemia, Familial Adenomatous Polyposis, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Huang is board certified in Gastroenterology. Dr. Huang is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    1409 E. Briggsmore Ave., 
    Modesto, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gaspar Nazareno is a Gastroenterologist practicing medicine in Modesto, California. Dr. Nazareno is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 44 other conditions, according to our data. His clinical expertise encompasses Hepatitis, Enlarged Liver, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy. Dr. Nazareno is board certified in Gastroenterology - Board Certified. Dr. Nazareno is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Nandakumar Ravi, M.D., A Professional Corporation

    9870 Brimhall Rd, Ste 100, 
    Bakersfield, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Nandakumar Ravi is a Gastroenterologist practicing medicine in Bakersfield, California. Dr. Ravi is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Bile Duct Obstruction, Esophageal Varices, Gastrostomy, and Gastrectomy. Dr. Ravi is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Ravi is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    5 Medical Plaza Care Center

    5 Medical Plaza Drive, Suite 140, 
    Roseville, CA 
    Languages Spoken:
    English
    Accepting New Patients

    William Chen is a Gastroenterologist practicing medicine in Roseville, California. Dr. Chen is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Esophageal Varices, Cholangitis, Endoscopy, and Colonoscopy. Dr. Chen is board certified in Gastroenterology. Dr. Chen is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    1409 E. Briggsmore Ave., 
    Modesto, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Victorio Pidlaoan is a Gastroenterologist practicing medicine in Modesto, California. Dr. Pidlaoan is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Swallowing Difficulty, Painful Swallowing, Gastrectomy, and Colonoscopy. Dr. Pidlaoan is board certified in Gastroenterology - Board Certified. Dr. Pidlaoan is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Gastroenterology - Dignity Health Medical Group - Grass Valley, CA

    300 Sierra College Drive, Ste 105 & 220, 
    Grass Valley, CA 
    Languages Spoken:
    English
    Accepting New Patients

    Care philosophy: I believe in compassionate and personalized care for my patients. I would like to provide same level of care to my patients as if they were my family members. My goal is to contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner. A holistic approach to healthcare, acknowledging each individual's physical spiritual, and psychosocial needs.Why I became a medical provider: My father was a family physician who practiced rural medicine in West Africa. Fascinated and inspired by his unconditional commitment in caring for the needy led me to sincerely follow his foot steps and pursue a career in Gastroenterology. Dr. Godil is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Radiation Enteritis, Gastritis, Chronic Erosive Gastritis, Colonoscopy, and Endoscopy. Dr. Godil is board certified in American Bd Internal Medicine and Internal Medicine (Sub: Gastroenterology). Dr. Godil is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Rajeev Krishan, MD Private Practice

    9900 Stockdale Hwy, Ste 208, 
    Bakersfield, CA 
    Languages Spoken:
    English, Farsi, Gujarati , Urdu
    Accepting New Patients

    Rajeev Krishan is a Gastroenterologist practicing medicine in Bakersfield, California. Dr. Krishan is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Gastric Dysmotility, Swallowing Difficulty, Painful Swallowing, Gastrectomy, and Gastrostomy. Dr. Krishan is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Krishan is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Sierra Nevada Gastrenterology Medical Associates

    300 Sierra College Dr, Ste 105, 
    Grass Valley, CA 
    Languages Spoken:
    English
    Accepting New Patients

    To contribute to the wellness of our community through the provision of quality services delivered in a compassionate and cost-effective manner. A holistic approach to healthcare, acknowledging each individual's physical spiritual, and psychosocial needs. Dr. Foliente is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Colonoscopy, and Endoscopy. Dr. Foliente is board certified in Internal Medicine (Sub: Gastroenterology). Dr. Foliente is currently accepting new patients.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Briggsmore Specialty Center

    1409 East Briggsmore Avenue, 
    Modesto, CA 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ambrish Ghumman is a Gastroenterologist practicing medicine in Modesto, California. Dr. Ghumman is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Hepatitis C, Hepatitis, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy. Dr. Ghumman is board certified in Gastroenterology - Board Certified. Dr. Ghumman is currently accepting new patients.

    Showing 1-20 of 2,489

    Last Updated: 04/28/2026

    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 in California, US?

    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 in California, US?

    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 in California, US?

    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 in California, US?

    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 in California, US?

    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 in California, US?

    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 in California, US?

    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 

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