The 20 Best Colonoscopy Doctors near foothill ranch, CA

Find the Experts and Specialists who perform Colonoscopy

Last Updated: 09/26/2026

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MediFind found 127 doctor with experience in Colonoscopy near foothill ranch, CA. Of these, 116 are Experienced, 9 are Advanced and 1 are Elite.

Location
LocationClose
127 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 
     (14.8 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
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Hoag Medical Group Pediatrics Irvine-Sand Canyon

    16100 Sand Canyon Ave Ste 245, 
    Irvine,, CA 
     (3.9 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    Wei Wang is a primary care provider, practicing in Internal Medicine in Irvine,, California. He has been practicing medicine for over 10 years. Dr. Wang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Osteomyelitis in Children, High Cholesterol, Type 2 Diabetes (T2D), Colonoscopy, and Endoscopy.

    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    Referral may be required
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Wanjun Bae is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Bae 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, Diverticular Disease, Angiodysplasia of the Colon, Gastrectomy, and Colonoscopy. Dr. Bae is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Colonoscopy
    Gastroenterology
    Advanced in Colonoscopy
    Gastroenterology
    Referral may be required
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Eric Chu is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Chu is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Hemorrhoids, Diverticular Disease, Gastrectomy, and Colonoscopy. Dr. Chu is currently accepting new patients.

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

    Kevin Ashby MD Inc

    26700 Towne Centre Dr, 
    Foothill Ranch, CA 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kevin Ashby is a Gastroenterologist practicing medicine in Foothill Ranch, California. Dr. Ashby is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Gastric Dysmotility, Diverticular Disease, Ulcerative Colitis, Gastrectomy, and Colonoscopy. Dr. Ashby is board certified in American Board Of Internal Medicine. Dr. Ashby is currently accepting new patients.

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

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (2.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Mladen Jecmenica is a Gastroenterologist practicing medicine in Lake Forest, California. Dr. Jecmenica is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 57 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Gastroesophageal Reflux Disease (GERD), Hiatal Hernia, Gastrostomy, and Endoscopy. Dr. Jecmenica is board certified in American Board Of Internal Medicine. Dr. Jecmenica is currently accepting new patients.

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

    Office

    16405 Sand Canyon Ave Ste 250, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Brian Lim is a Gastroenterologist practicing medicine in Irvine, California. Dr. Lim is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Gastrointestinal Stromal Tumor, Portal Hypertension, Endoscopy, and Colonoscopy.

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

    Office

    16105 Sand Canyon Ave Ste 230, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Caroline Hwang is a Gastroenterologist practicing medicine in Irvine, California. Dr. Hwang 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 Crohn's Disease, Ulcerative Colitis, Pancreatic Cancer, Gastrectomy, and Colonoscopy. Dr. Hwang is currently accepting new patients.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Office

    16200 Sand Canyon Ave Ste 101-028, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English

    John Chien is a primary care provider, practicing in Internal Medicine in Irvine, California. Dr. Chien is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Sepsis, Ogilvie Syndrome, Peptic Ulcer, Gastrostomy, and Colonoscopy.

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

    Ardalan Babaknia M D Professional Corp.

    15775 Laguna Canyon Rd Ste 240, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jim Chou is a Gastroenterologist practicing medicine in Irvine, California. Dr. Chou is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), Colonoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    General Surgery
    Experienced in Colonoscopy
    General Surgery
    Referral may be required

    Hoag Health Center Irvine-Sand Canyon

    16305 Sand Canyon Ave Ste 230, 
    Irvine, CA 
     (3.9 miles away)
    Languages Spoken:
    English

    Peter Wang is a General Surgeon practicing medicine in Irvine, California. Dr. Wang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Hernia, Choledocholithiasis, Retroperitoneal Inflammation, Hernia Surgery, and Ileostomy.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Moulton Family Medical Group Inc

    24432 Muirlands Blvd, 
    Lake Forest, CA 
     (4.4 miles away)
    Languages Spoken:
    English

    Adel Boutros is a primary care provider, practicing in Family Medicine in Lake Forest, California. Dr. Boutros 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 Sepsis, Lung Metastases, Pneumonia, Gastrostomy, and Endoscopy. Dr. Boutros is board certified in American Board Of Family Medicine.

    Experienced in Colonoscopy
    Palliative Medicine
    Experienced in Colonoscopy
    Palliative Medicine
    Referral may be required

    Monarch Healthcare A Medical Group Inc.

    7 Technology Dr, 
    Irvine, CA 
     (4.7 miles away)
    Languages Spoken:
    English

    Jun Liu is a Palliative Medicine provider practicing medicine in Irvine, California. Dr. Liu is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Chronic Inflammatory Response Syndrome (CIRS), Endoscopy, and Colonoscopy.

    Experienced in Colonoscopy
    Experienced in Colonoscopy
    Referral may be required

    Optumcare Medical Group

    11 Technology Dr, 
    Irvine, CA 
     (4.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Mojtaba Sabahi is a Cardiologist practicing medicine in Irvine, California. Dr. Sabahi is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Apoplexy, Heart Attack, Gastrostomy, and Endoscopy. Dr. Sabahi is currently accepting new patients.

    Experienced in Colonoscopy
    Family Medicine
    Experienced in Colonoscopy
    Family Medicine

    Neha Medical Corporation Inc

    11 Technology Dr, 
    Irvine, CA 
     (4.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Vikram Marfatia is a primary care provider, practicing in Family Medicine in Irvine, California. Dr. Marfatia 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 Stroke, Renovascular Hypertension, Ascites, Gastrostomy, and Endoscopy. Dr. Marfatia is currently accepting new patients.

    Experienced in Colonoscopy
    Gastroenterology
    Experienced in Colonoscopy
    Gastroenterology
    Referral may be required
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniald Rodrigues is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Rodrigues is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Chronic Erosive Gastritis, Gastrectomy, and Endoscopy. Dr. Rodrigues is currently accepting new patients.

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

    John Witczak DO PC

    26921 Crown Valley Pkwy Ste 201, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Nader Mirhoseni is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Mirhoseni is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Acute Pancreatitis, Gallstones, Endoscopy, and Gastrectomy.

    Experienced in Colonoscopy
    Internal Medicine
    Experienced in Colonoscopy
    Internal Medicine

    Office

    26800 Crown Valley Pkwy Ste 305, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English, Arabic, French, Spanish
    Accepting New Patients

    Ghassan Kabbach is a primary care provider, practicing in Internal Medicine in Mission Viejo, California. Dr. Kabbach is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Sepsis, Ogilvie Syndrome, Heart Attack, Hip Replacement, and Colonoscopy. Dr. Kabbach is currently accepting new patients.

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

    Mission Heritage Mission Viejo-Gastroenterology

    27799 Medical Center Rd Ste 310, 
    Mission Viejo, CA 
     (4.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Elmer Chang is a Gastroenterologist practicing medicine in Mission Viejo, California. Dr. Chang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Turcot Syndrome, Gastrectomy, and Endoscopy.

    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 
     (5.7 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.

    Showing 1-20 of 127

    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 foothill ranch, 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 foothill ranch, 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 foothill ranch, 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 foothill ranch, 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 foothill ranch, 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 foothill ranch, 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 foothill ranch, 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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