The 20 Best Colonoscopy Doctors near irvine, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 09/26/2026

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MediFind found 204 doctor with experience in Colonoscopy near irvine, CA. Of these, 191 are Experienced, 11 are Advanced and 1 are Elite.

Location
LocationClose
204 providers found
    Elite in Colonoscopy
    Gastroenterology
    Elite in Colonoscopy
    Gastroenterology
    Referral may be required

    UCI Health Chao Family Comprehensive Digestive Disease Center

    101 The City Drive South, Building 22C, 
    Orange, CA 
     (8.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    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 50 other conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Jaundice, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy. Dr. Samarasena is board certified in American Board Of Internal Medicine - Gastroenterology.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Gottschalk Medical Plaza

    1 Medical Plaza Drive, 
    Irvine, CA 
     (3.0 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    William Karnes is a Gastroenterologist practicing medicine in Irvine, California. He has been practicing medicine for over 44 years. Dr. Karnes 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 Trichohepatoenteric Syndrome, Nonalcoholic Steatohepatitis (NASH), Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy. Dr. Karnes is board certified in American Board Of Internal Medicine - Gastroenterology and American Board Of Internal Medicine - Internal Medicine.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    Referral may be required

    Digestive Disease Consultants Of Orange County Inc.

    113 Waterworks Way Ste 155, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English

    Paul Lee is a Gastroenterologist practicing medicine in Irvine, California. Dr. Lee is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 67 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Swallowing Difficulty, Painful Swallowing, Endoscopy, and Colonoscopy.

    Learn about our expert tiers
    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    Referral may be required

    Digestive Disease Consultants Of Orange County Inc.

    113 Waterworks Way Ste 155, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Shahrooz Bemanian is a Gastroenterologist practicing medicine in Irvine, California. Dr. Bemanian is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 59 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Menetrier Disease, Gastrectomy, and Colonoscopy.

    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine
    Experienced in Colonoscopy
    Pulmonary Medicine | Sleep Medicine
    Referral may be required

    Imran Sharief, MD Private Practice

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

    Imran Sharief is a Pulmonary Medicine specialist and a Sleep Medicine provider practicing medicine in Santa Ana, California. 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 Hospital-Acquired Pneumonia, Atypical 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
    Colorectal Surgery
    Experienced in Colonoscopy
    Colorectal Surgery
    Referral may be required

    UCI Health Chao Family Comprehensive Digestive Disease Center

    101 The City Drive South, Building 22C, 
    Orange, CA 
     (8.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Skandan Shanmugan is a Colorectal Surgeon practicing medicine in Orange, California. Dr. Shanmugan 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 Familial Colorectal Cancer, Colorectal Cancer, Lynch Syndrome, Hernia Surgery, and Ileostomy. Dr. Shanmugan is board certified in American Board Of Surgery - Surgery (General Surgery). Dr. Shanmugan is currently accepting new patients.

    Experienced in Colonoscopy
    Family Medicine | Geriatrics
    Experienced in Colonoscopy
    Family Medicine | Geriatrics

    Cedars Family Medicine Inc.

    18021 Sky Park Cir, 
    Irvine, CA 
     (1.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Christopher Salem is a primary care provider, practicing in Family Medicine and Geriatrics in Irvine, California. Dr. Salem is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 31 other conditions, according to our data. His clinical expertise encompasses Sepsis, Stroke, Lung Metastases, Gastrostomy, and Thymectomy. Dr. Salem is board certified in American Osteopathic Board Of Family Practice. Dr. Salem is currently accepting new patients.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine
    4950 Barranca Pkwy, Suite 103c, 
    Irvine, CA 
     (1.9 miles away)
    Languages Spoken:
    English

    Michael Shaw is a primary care provider, practicing in Family Medicine in Irvine, California. Dr. Shaw is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Regents Point-Windcrest

    19191 Harvard Ave, 
    Irvine, CA 
     (2.2 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Hien Nguyen is a primary care provider, practicing in Internal Medicine in Irvine, California. She has been practicing medicine for over 17 years. Dr. Nguyen 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 Pneumonia, Sepsis, Ogilvie Syndrome, Gastrostomy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    UCI Health Susan Samueli Integrative Health Institute

    856 Health Sciences Road, Suite 2600, 
    Irvine, CA 
     (3.4 miles away)
    Languages Spoken:
    English, Hindi
    Offers Telehealth

    Kiran Sachdev is a Gastroenterologist practicing medicine in Irvine, California. Dr. Sachdev 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 Encopresis, Bowel Incontinence, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required
    17400 Irvine Boulevard, Suite F, 
    Tustin, CA 
     (3.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Khaldoun Debian is a Gastroenterologist practicing medicine in Tustin, California. Dr. Debian 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 Gardner Syndrome, Familial Adenomatous Polyposis, Turcot Syndrome, Endoscopy, and Gastrectomy. Dr. Debian is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Office

    6789 Quail Hill Pkwy, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Hubert Sie is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Sie is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Sepsis, Bile Duct Stricture, Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH), Endoscopy, and Pancreatectomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Orange County Irvine Medical Center

    6640 Alton Pkwy, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Erica Bromley is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Bromley is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Colorectal Cancer, Chronic Cough, and Colonoscopy.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required

    Alton Sand Canyon Medical Offices

    6650 Alton Parkway, 
    Irvine, CA 
     (3.5 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients

    Shireena Desai is a Gastroenterologist practicing medicine in Irvine, California. She has been practicing medicine for over 17 years. Dr. Desai is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Colorectal Polyps, Hemorrhoids, Heartburn, Alcoholic Cirrhosis, and Colonoscopy. Dr. Desai is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    David Liao is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Liao is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Pneumonia, Sepsis, Ogilvie Syndrome, Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    John Dieckhoff is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Dieckhoff is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Pneumonia, Sepsis, Ogilvie Syndrome, Gastrostomy, and Hip Replacement.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Veejay Geria is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Geria is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Pneumonia, Sepsis, Hospital-Acquired Pneumonia, Hip Replacement, and Endoscopy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Yi Tang is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Tang is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Episcleritis, Pneumonia, Sepsis, Gastrostomy, and Bone Marrow Aspiration.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Hospital Irvine

    16200 Sand Canyon Ave, 
    Irvine, CA 
     (3.5 miles away)
    Languages Spoken:
    English

    Ewa Kontny is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Kontny is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 26 other conditions, according to our data. Her clinical expertise encompasses Sepsis, Mixed Connective Tissue Disease, Pneumonia, Endoscopy, and Hip Replacement.

    Experienced in Colonoscopy
    Internal Medicine | Hospital Medicine
    Experienced in Colonoscopy
    Internal Medicine | Hospital Medicine

    Alton/sand Canyon Medical Offices

    6670 Alton Parkway, 
    Irvine, CA 
     (3.6 miles away)
    Languages Spoken:
    English

    Debby Chou is a Hospital Medicine provider practicing medicine in Irvine, California. Dr. Chou is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Colonoscopy and Bone Marrow Aspiration.

    Showing 1-20 of 204

    Last Updated: 09/26/2026

    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 irvine, 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 irvine, 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 irvine, 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 irvine, 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 irvine, 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 irvine, 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 irvine, 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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