The 20 Best Collagenous Colitis Doctors Near Me in westminster, CA

Find the Top Collagenous Colitis Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 23 doctor with experience in Collagenous Colitis near westminster, CA. Of these, 21 are Experienced and 2 are Advanced.

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23 providers found
    Advanced in Collagenous Colitis
    Gastroenterology
    Advanced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Long Phi Dang MD Inc

    7891 Westminster Blvd, 
    Westminster, CA 
     (0.1 miles away)
    Languages Spoken:
    English

    Long Dang is a Gastroenterologist practicing medicine in Westminster, California. Dr. Dang is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 57 other conditions, according to our data. His clinical expertise encompasses Chronic Erosive Gastritis, Gastritis, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy. Dr. Dang is board certified in American Board Of Gastroentrology.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Orange County Digestive Care Inc

    18111 Brookhurst St, 
    Fountain Valley, CA 
     (4.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Duke Nguyen is a Gastroenterologist practicing medicine in Fountain Valley, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Gastritis, Gastrectomy, and Colonoscopy.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    UCI Health Chao Family Comprehensive Digestive Disease Center

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

    Sunhee Park is a Gastroenterologist practicing medicine in Orange, California. Dr. Park is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Crohn's Disease, Ulcerative Colitis, Colitis, Endoscopy, and Gastrectomy. Dr. Park is board certified in American Board Of Internal Medicine - Gastroenterology and American Board Of Internal Medicine - Internal Medicine.

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

    UCI Health Chao Family Comprehensive Digestive Disease Center

    101 The City Dr S Bldg 22C, 
    Orange, CA 
     (6.8 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Carl Albers is a Gastroenterologist practicing medicine in Orange, California. Dr. Albers is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gas Bloat Syndrome, Hepatitis, Jaundice, Endoscopy, and Colonoscopy.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Socal Gastroenterology Corp

    10931 Cherry St, 
    Los Alamitos, CA 
     (5.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Joe Chen is a Gastroenterologist practicing medicine in Los Alamitos, California. Dr. Chen is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 33 other conditions, according to our data. His clinical expertise encompasses Menetrier Disease, Chronic Erosive Gastritis, Familial Adenomatous Polyposis, Endoscopy, and Gastrostomy. Dr. Chen is board certified in American Board Of Internal Medicine.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Socal Gastroenterology Corp

    10931 Cherry St, 
    Los Alamitos, CA 
     (5.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Thai-van Nguyen is a Gastroenterologist practicing medicine in Los Alamitos, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Menetrier Disease, Familial Adenomatous Polyposis, Chronic Erosive Gastritis, Gastrectomy, and Gastrostomy. Dr. Nguyen is board certified in American Board Of Internal Medicine.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Associated Gastroenterology Medical Group

    1211 W La Palma Ave Ste 306, 
    Anaheim, CA 
     (6.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kavita Singh is a Gastroenterologist practicing medicine in Anaheim, California. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Endoscopy, and Colonoscopy. Dr. Singh is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Genesis Healthcare Partners PC

    1010 W La Veta Ave, 
    Orange, CA 
     (7.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    James Lee is a Gastroenterologist practicing medicine in Orange, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Gas Bloat Syndrome, Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), Gastrostomy, and Endoscopy. Dr. Lee is board certified in American Board Of Internal Medicine. Dr. Lee is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Genesis Healthcare Partners PC

    1010 W La Veta Ave, 
    Orange, CA 
     (7.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Haig Najarian is a Gastroenterologist practicing medicine in Orange, California. Dr. Najarian is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Ascites, Gastroesophageal Reflux Disease (GERD), Visceromegaly, Gastrectomy, and Endoscopy. Dr. Najarian is board certified in American Board Of Internal Medicine. Dr. Najarian is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Long Beach Gastroenterology Associates

    3833 Worsham Ave Ste 300, 
    Long Beach, CA 
     (8.3 miles away)
    Languages Spoken:
    English, Central Khmer, Spanish
    Accepting New Patients
    Offers Telehealth

    Erik Kerekes is a Gastroenterologist practicing medicine in Long Beach, California. Dr. Kerekes is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Gastritis, Swallowing Difficulty, Endoscopy, and Gastrectomy. Dr. Kerekes is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Coast Internal Medicine Consultants

    520 Superior Ave Ste 205, 
    Newport Beach, CA 
     (9.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Christopher Lee is a Gastroenterologist practicing medicine in Newport Beach, California. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Gardner Syndrome, Turcot Syndrome, Familial Adenomatous Polyposis, and Gastroesophageal Reflux Disease (GERD). Dr. Lee is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Office

    520 Superior Ave Ste 245, 
    Newport Beach, CA 
     (9.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Richard Quist is a Gastroenterologist practicing medicine in Newport Beach, California. Dr. Quist is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS), Diverticular Disease, Colonoscopy, and Gastrectomy.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Patricia Shih-Ting Tsai MD Inc.

    496 Old Newport Blvd Ste 1, 
    Newport Beach, CA 
     (9.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Shih-ting Tsai is a Gastroenterologist practicing medicine in Newport Beach, California. Dr. Tsai is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. She is also highly rated in 14 other conditions, according to our data. Her clinical expertise encompasses Hiatal Hernia, Congenital Diaphragmatic Hernia, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Gottschalk Medical Plaza

    1 Medical Plaza Drive, 
    Irvine, CA 
     (11.1 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 the treatment of Collagenous Colitis. 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.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    First Choice Physician Partners

    16671 Yorba Linda Blvd, 
    Yorba Linda, CA 
     (12.2 miles away)
    Languages Spoken:
    English

    Keith Martin is a Gastroenterologist practicing medicine in Yorba Linda, California. Dr. Martin is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Diverticular Disease, Hemorrhoids, Endoscopy, and Gastrectomy. Dr. Martin is board certified in American Board Of Internal Medicine - Gastroenterology, American Board Of Internal Medicine - Internal Medicine, and American Board Of Internal Medicine.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (10.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Sajen Mathews is a Gastroenterologist practicing medicine in Fullerton, California. Dr. Mathews is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. 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. Dr. Mathews is currently accepting new patients.

    Experienced in Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (10.7 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 the treatment of Collagenous Colitis. 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 Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (10.7 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 the treatment of Collagenous Colitis. 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 Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required
    1837 Sunny Crest Drive, 
    Fullerton, CA 
     (10.7 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 the treatment of Collagenous Colitis. 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 Collagenous Colitis
    Gastroenterology
    Experienced in Collagenous Colitis
    Gastroenterology
    Referral may be required

    Office

    15000 Kensington Park Dr Ste 270, 
    Tustin, CA 
     (11.9 miles away)
    Languages Spoken:
    English

    Victor Yu is a Gastroenterologist practicing medicine in Tustin, California. Dr. Yu is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. He is also highly rated in 52 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Gas Bloat Syndrome, Gastrectomy, and Colonoscopy.

    Showing 1-20 of 23

    Last Updated: 09/26/2026

    What is the definition of Collagenous Colitis?

    Collagenous colitis is a type of inflammatory bowel disease that affects the colon. It is a form of microscopic colitis, which causes chronic diarrhea. In all forms of microscopic colitis, the colon appears normal or almost normal on colonoscopy, but the inflammation is visible when a biopsy of the colon is examined under a microscope (hence its name). People with this disease usually have between four and nine watery bowel movements per day, but in rare cases may have more than fifteen. Various other symptoms relating to the gastrointestinal system or other body symptoms may also be present. The cause of Collagenous colitis is not known but it is thought to be multifactorial. This means that both genetic and environmental factors may interact to cause a person to develop the disease. The extent to which genes play a role is unclear, but familial cases have been described. Certain medications, such as NSAIDS and proton pump inhibitors, have been reported to cause or trigger the disease in some people. However, strong evidence directly linking these medications to the disease is still lacking.

    When should I see a Collagenous Colitis doctor near westminster, 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 Collagenous Colitis doctor near westminster, 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 Collagenous Colitis doctors near westminster, 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 Collagenous Colitis doctors near westminster, 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 Collagenous Colitis doctor near westminster, 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 Collagenous Colitis doctor search results page. 

    Why is it important to get a second opinion from a different Collagenous Colitis 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 Collagenous Colitis doctor near westminster, 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 Collagenous Colitis 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 Collagenous Colitis 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 Collagenous Colitis doctors near westminster, CA?

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

    Look for the filter feature on the left-side of the Collagenous Colitis 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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