The 20 Best Colonoscopy Doctors near Fullerton, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 04/28/2026

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MediFind found 210 doctor with experience in Colonoscopy near Fullerton, CA. Of these, 190 are Experienced, 18 are Advanced, 1 are Distinguished and 1 are Elite.

Location
LocationClose
210 providers found
    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 
     (6.3 miles away)
    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.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Erika Hoyos is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Hoyos is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 15 other conditions, according to our data. Her clinical expertise encompasses Hemorrhoids, Intestinal Cancer, Chronic Erosive Gastritis, Endoscopy, and Gastrectomy. Dr. Hoyos is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Scott Sainburg is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Sainburg is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Benign Esophageal Stricture, Lower Esophageal Ring, Painful Swallowing, Endoscopy, and Gastrectomy. Dr. Sainburg is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Eugene Yoon is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Yoon is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 27 other conditions, according to our data. His clinical expertise encompasses Choledocholithiasis, Angiodysplasia of the Colon, Ascites, Endoscopy, and Gastrostomy. Dr. Yoon is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Hyder Jamal is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Jamal is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 26 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Barrett Esophagus, Endoscopy, and Gastrostomy. Dr. Jamal is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sajen Mathews is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Mathews is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gastric Dysmotility, Diverticular Disease, Benign Esophageal Stricture, Endoscopy, and Gastrostomy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (2.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Patrick Koo is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Koo is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy. Dr. Koo is currently accepting new patients.

    Experienced in Colonoscopy
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery

    Office

    3855 Health Sciences Dr Ste 2073, 
    La Jolla, CA 
     (2.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sonia Ramamoorthy is a Colorectal Surgeon practicing medicine in La Jolla, California. Dr. Ramamoorthy is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 15 other conditions, according to our data. Her clinical expertise encompasses Colorectal Cancer, Anal Cancer, Familial Colorectal Cancer, Ileostomy, and Endoscopy.

    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine
    Experienced in Colonoscopy
    Gastroenterology | Internal Medicine

    Associated Gastroenterology

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Offers Telehealth

    Brian Riff is an Internal Medicine specialist and a Gastroenterologist practicing medicine in Anaheim, California. He has been practicing medicine for over 17 years. Dr. Riff is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Campylobacter Infection, Gastrostomy, and Gastrectomy. Dr. Riff is board certified in American Board Of Internal Medicine.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology

    Dr P G Rajan MD Inc

    1711 W Romneya Dr, 
    Anaheim, CA 
     (1.7 miles away)
    Languages Spoken:
    English

    Ashokkumar Amin is a Gastroenterologist practicing medicine in Anaheim, California. Dr. Amin is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Swallowing Difficulty, Painful Swallowing, Gastrostomy, and Gastrectomy.

    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine
    Advanced in Colonoscopy
    Gastroenterology | Internal Medicine

    Digestive And Liver Disease Specialists

    1771 W Romneya Dr, 
    Anaheim, CA 
     (1.8 miles away)
    Experience:
    45+ years
    Languages Spoken:
    English

    Ravindra Alapati is an Internal Medicine specialist and a Gastroenterologist practicing medicine in Anaheim, California. He has been practicing medicine for over 45 years. Dr. Alapati is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 40 other conditions, according to our data. His clinical expertise encompasses Visceromegaly, Bile Duct Obstruction, Diverticular Disease, Gastrostomy, and Gastrectomy. Dr. Alapati is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine
    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine

    Imran Sharief, MD Private Practice

    1901 E 4th St, 
    Santa Ana, CA 
     (9.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    I seek to provide the most complete care to my patients in a caring and respectful way. Dr. Sharief is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Atypical Pneumonia, Hospital-Acquired Pneumonia, Pneumonia, Obstructive Sleep Apnea, and Colonoscopy. Dr. Sharief is board certified in Internal Medicine (Sub: Sleep Medicine). Dr. Sharief is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Rajiv I Bhavsar MD A Med Corp

    1321 N Harbor Blvd, 
    Fullerton, CA 
     (0.9 miles away)
    Experience:
    42+ years
    Languages Spoken:
    English

    Rajiv Bhavsar is a primary care provider, practicing in Internal Medicine in Fullerton, California. He has been practicing medicine for over 42 years. Dr. Bhavsar is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Enlarged Liver, Acute Kidney Failure, Diverticular Disease, Gastrostomy, and Colonoscopy. Dr. Bhavsar is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    St. Jude Heritage Fullerton-Gastroenterology

    1837 Sunny Crest Dr, 
    Fullerton, CA 
     (1.5 miles away)
    Languages Spoken:
    English

    Kumkum Patel is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Patel is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS), Gastric Dysmotility, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Howard Pyo-Pyo Familly Clinic Inc.

    2000 E Chapman Ave, 
    Fullerton, CA 
     (1.6 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    Howard Pyo is a primary care provider, practicing in Family Medicine in Fullerton, California. He has been practicing medicine for over 10 years. Dr. Pyo is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Perianal Streptococcal Cellulitis, COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), Endoscopy, and Gastrostomy. Dr. Pyo is board certified in American Board Of Family Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Chest And Critical Care Consultants

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    32+ years
    Languages Spoken:
    English

    Min-min Mya is an Internal Medicine provider practicing medicine in Anaheim, California. She has been practicing medicine for over 32 years. Dr. Mya is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Gallbladder Disease, Liver Failure, End-Stage Renal Disease (ESRD), Gastrostomy, and Colonoscopy. Dr. Mya is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Chest And Critical Care Consultants

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    49+ years
    Languages Spoken:
    English

    Hassan Ragab is a primary care provider, practicing in Internal Medicine in Anaheim, California. He has been practicing medicine for over 49 years. Dr. Ragab is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Ventricular Tachycardia, Sepsis, Pneumonia, Gastrostomy, and Colonoscopy. Dr. Ragab is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Samir Azzam MD Inc

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English

    Samir Azzam is a primary care provider, practicing in Family Medicine in Anaheim, California. He has been practicing medicine for over 39 years. Dr. Azzam is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Sepsis, Pneumonia, Atypical Pneumonia, Gastrostomy, and Pacemaker Implantation. Dr. Azzam is board certified in American Board Of Family Medicine.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Archana Shende MD

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    42+ years
    Languages Spoken:
    English
    Offers Telehealth

    Archana Shende is a primary care provider, practicing in Internal Medicine in Anaheim, California. She has been practicing medicine for over 42 years. Dr. Shende is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, Gastrostomy, and Colonoscopy. Dr. Shende is board certified in American Board Of Internal Medicine.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology

    Associated Gastroenterology

    1211 W La Palma Ave, 
    Anaheim, CA 
     (1.7 miles away)
    Experience:
    43+ years
    Languages Spoken:
    English

    Kevin Kuettel is a Gastroenterologist practicing medicine in Anaheim, California. He has been practicing medicine for over 43 years. Dr. Kuettel is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Chronic Erosive Gastritis, Hiatal Hernia, Congenital Diaphragmatic Hernia, Gastrectomy, and Gastrostomy. Dr. Kuettel is board certified in American Board Of Internal Medicine.

    Showing 1-20 of 210

    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 near Fullerton, 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 Fullerton, 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 Fullerton, 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 Fullerton, 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 Fullerton, 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 Fullerton, 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 Fullerton, 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 

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