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    Last Updated: 10/30/2025

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    MediFind found 46 doctor with experience in Collagenous Colitis near Phoenix, AZ. Of these, 34 are Experienced and 12 are Advanced.

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    46 providers found
      Advanced in Collagenous Colitis

      Dr. David Drewitz
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. David Drewitz
      Gastroenterology

      Arizona Digestive Health PC

      349 E Coronado Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-266-5678
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      David Drewitz is a Gastroenterologist in Phoenix, Arizona. Dr. Drewitz is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Diverticular Disease, Ulcerative Colitis, Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, and Endoscopy.

      Experienced in Collagenous Colitis

      Dr. Adam Randolph
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Adam Randolph
      Gastroenterology

      Arizona Digestive Health PC

      349 E Coronado Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-266-5678
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Adam Randolph is a Gastroenterologist in Phoenix, Arizona. Dr. Randolph is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Indigestion, Diarrhea, Trichohepatoenteric Syndrome, Endoscopy, and Colonoscopy.

      What does Elite, Distinguished, Advanced, Experienced mean?
      Experienced in Collagenous Colitis

      Dr. Michael R. Mills
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Michael R. Mills
      Gastroenterology

      Arizona Digestive Health PC

      349 E Coronado Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-266-5678
      Languages Spoken:
      English, Spanish
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Michael Mills is a Gastroenterologist in Phoenix, Arizona. Dr. Mills is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Swallowing Difficulty, Painful Swallowing, Diverticular Disease, and Endoscopy. Dr. Mills is currently accepting new patients.

      Learn about our expert tiers
      Experienced in Collagenous Colitis

      Dr. Shiva Ratuapli
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Shiva Ratuapli
      Gastroenterology

      Arizona Digestive Health PC

      349 E Coronado Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-266-5678
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Shiva Ratuapli is a Gastroenterologist in Phoenix, Arizona. Dr. Ratuapli is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Swallowing Difficulty, Painful Swallowing, Colonoscopy, and Endoscopy.

      Experienced in Collagenous Colitis

      Dr. Eugene F. Tharalson
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Eugene F. Tharalson
      Gastroenterology

      Arizona Digestive Health PC

      349 E Coronado Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-266-5678
      Languages Spoken:
      English, Spanish
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Eugene Tharalson is a Gastroenterologist in Phoenix, Arizona. Dr. Tharalson is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Endoscopy. Dr. Tharalson is currently accepting new patients.

      Experienced in Collagenous Colitis

      Dr. Darrell D. Wadas
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Darrell D. Wadas
      Gastroenterology
      1111 E Mcdowell Rd, 
      Phoenix, AZ 
       (1.4 miles away)
      602-839-2000
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Darrell Wadas is a Gastroenterologist in Phoenix, Arizona. Dr. Wadas is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Gas Bloat Syndrome, Swallowing Difficulty, Painful Swallowing, Gastrectomy, and Endoscopy. Dr. Wadas is currently accepting new patients.

      Experienced in Collagenous Colitis

      Dr. Bradford C. Gelzayd
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Bradford C. Gelzayd
      Gastroenterology

      District Medical Group Inc

      2525 E Roosevelt St, 
      Phoenix, AZ 
       (2.8 miles away)
      602-344-1015
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Bradford Gelzayd is a Gastroenterologist in Phoenix, Arizona. Dr. Gelzayd is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Juvenile Polyposis Syndrome, Cronkhite-Canada Disease, Attenuated Familial Adenomatous Polyposis, and Gastroesophageal Reflux Disease (GERD). Dr. Gelzayd is currently accepting new patients.

      Advanced in Collagenous Colitis

      Dr. Ronald Hauptman
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. Ronald Hauptman
      Gastroenterology

      Arizona Digestive Health PC

      9250 N 3rd St, Suite 4035, 
      Phoenix, AZ 
       (8.4 miles away)
      602-279-3575
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Ronald Hauptman is a Gastroenterologist in Phoenix, Arizona. Dr. Hauptman is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Hiatal Hernia, Congenital Diaphragmatic Hernia, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

      Advanced in Collagenous Colitis

      Dr. Mark Gulinson
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. Mark Gulinson
      Gastroenterology

      Arizona Digestive Health PC

      9250 N 3rd St, Suite 4035, 
      Phoenix, AZ 
       (8.4 miles away)
      602-279-3575
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Mark Gulinson is a Gastroenterologist in Phoenix, Arizona. Dr. Gulinson is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Portal Hypertension, Childhood Volvulus, Indigestion, Endoscopy, and Gastrectomy.

      Advanced in Collagenous Colitis

      Dr. Shifat Ahmed
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. Shifat Ahmed
      Gastroenterology

      Arizona Digestive Health PC

      9250 N 3rd St, Suite 4035, 
      Phoenix, AZ 
       (8.4 miles away)
      602-279-3575
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Shifat Ahmed is a Gastroenterologist in Phoenix, Arizona. Dr. Ahmed is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Gastric Dysmotility, Gas Bloat Syndrome, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Colonoscopy.

      Experienced in Collagenous Colitis

      Dr. Nisha Sharma
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Nisha Sharma
      Gastroenterology

      Banner - University Physician Specialists LLC

      4200 E Camelback Rd, Suite 202, 
      Phoenix, AZ 
       (6.5 miles away)
      602-229-2200
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Nisha Sharma is a Gastroenterologist in Phoenix, Arizona. Dr. Sharma is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. Her top areas of expertise are Acute Pancreatitis, Swallowing Difficulty, Painful Swallowing, Endoscopy, and Gastrectomy.

      Experienced in Collagenous Colitis

      Dr. Barbara C. Lipschitz
      Internal Medicine
      Experienced in Collagenous Colitis

      Dr. Barbara C. Lipschitz
      Internal Medicine
      7600n15th St, #190, 
      Phoenix, AZ 
       (7.0 miles away)
      602-200-3800
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Barbara Lipschitz is a primary care provider, practicing in Internal Medicine in Phoenix, Arizona. Dr. Lipschitz is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. Her top areas of expertise are High Cholesterol, Colitis, Diabetic Nephropathy, and Postmenopausal Osteoporosis. Dr. Lipschitz is currently accepting new patients.

      Experienced in Collagenous Colitis

      Dr. Patrick Lam
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Patrick Lam
      Gastroenterology

      Vhs Outpatient Clinics Inc

      5130 W Baseline Rd, Suite 102, 
      Laveen, AZ 
       (7.5 miles away)
      602-237-0039
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Patrick Lam is a Gastroenterologist in Laveen, Arizona. Dr. Lam is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Hemorrhoids, Familial Adenomatous Polyposis, and Indigestion.

      Experienced in Collagenous Colitis

      Dr. Michael Foley
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Michael Foley
      Gastroenterology

      Arizona Digestive Health PC

      9250 N 3rd St, Suite 4035, 
      Phoenix, AZ 
       (8.4 miles away)
      602-279-3575
      Experience:
      16+ years
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Michael Foley is a Gastroenterologist in Phoenix, Arizona. Dr. Foley has been practicing medicine for over 16 years and is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

      Experienced in Collagenous Colitis

      Dr. Melissa L. Reed
      Family Medicine
      Experienced in Collagenous Colitis

      Dr. Melissa L. Reed
      Family Medicine

      Honorhealth Medical Group, LLC

      7301 E 2nd St, Suite 210, 
      Scottsdale, AZ 
       (9.0 miles away)
      480-534-4515
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Melissa Reed is a primary care provider, practicing in Family Medicine in Scottsdale, Arizona. Dr. Reed is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. Her top area of expertise is Collagenous Colitis. Dr. Reed is currently accepting new patients.

      Experienced in Collagenous Colitis

      Dr. Elise Donnelly
      Family Medicine
      Experienced in Collagenous Colitis

      Dr. Elise Donnelly
      Family Medicine

      Honorhealth Ambulatory

      3621 N Wells Fargo Ave, 
      Scottsdale, AZ 
       (9.1 miles away)
      855-485-4673
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Elise Donnelly is a primary care provider, practicing in Family Medicine in Scottsdale, Arizona. Dr. Donnelly is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. Her top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and High Cholesterol.

      Experienced in Collagenous Colitis

      Dr. Prabhakar Swaroop
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Prabhakar Swaroop
      Gastroenterology

      Arizona Digestive Health PC

      5111 N Scottsdale Rd, Suite 151, 
      Scottsdale, AZ 
       (9.6 miles away)
      602-254-6686
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Prabhakar Swaroop is a Gastroenterologist in Scottsdale, Arizona. Dr. Swaroop is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Diarrhea, Endoscopy, and Gastrectomy.

      Experienced in Collagenous Colitis

      Dr. Sirish Rao
      Gastroenterology
      Experienced in Collagenous Colitis

      Dr. Sirish Rao
      Gastroenterology

      Arizona Digestive Health PC

      5111 N Scottsdale Rd, Suite 151, 
      Scottsdale, AZ 
       (9.6 miles away)
      602-254-6686
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Sirish Rao is a Gastroenterologist in Scottsdale, Arizona. Dr. Rao is rated as an Experienced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Bowel Incontinence, Levator Syndrome, Small Bowel Bacterial Overgrowth, Endoscopy, and Colonoscopy.

      Advanced in Collagenous Colitis

      Dr. Mark Griffin
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. Mark Griffin
      Gastroenterology

      Bhsm Rehabilitation LLC

      5605 W Eugie Ave, Suite 212and215, 
      Glendale, AZ 
       (12.6 miles away)
      602-865-5830
      Languages Spoken:
      English
      See accepted insurances

      Mark Griffin is a Gastroenterologist in Glendale, Arizona. Dr. Griffin is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. His top areas of expertise are Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Endoscopy, and Colonoscopy.

      Advanced in Collagenous Colitis

      Dr. Mary Atia
      Gastroenterology
      Advanced in Collagenous Colitis

      Dr. Mary Atia
      Gastroenterology

      Arizona Digestive Health PC

      5823 W Eugie Ave, Suite A, 
      Glendale, AZ 
       (12.8 miles away)
      602-843-1265
      Experience:
      16+ years
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Mary Atia is a Gastroenterologist in Glendale, Arizona. Dr. Atia has been practicing medicine for over 16 years and is rated as an Advanced provider by MediFind in the treatment of Collagenous Colitis. Her top areas of expertise are Diverticular Disease, Celiac Disease, Diarrhea, Colonoscopy, and Endoscopy.

      Showing 1-20 of 46

      Last Updated: 10/30/2025

      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 Phoenix, AZ?

      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 Phoenix, AZ?

      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 do I find the best Collagenous Colitis doctor near Phoenix, AZ?

      You can find a Collagenous Colitis doctor in any of the 10 largest U.S. cities by clicking below:

      Collagenous Colitis doctor near New York, NY
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      Collagenous Colitis doctor near Houston, TX
      Collagenous Colitis doctor near Phoenix, AZ
      Collagenous Colitis doctor near Philadelphia, PA
      Collagenous Colitis doctor near Atlanta, GA
      Collagenous Colitis doctor near Boston, MA
      Collagenous Colitis doctor near Dallas, TX
      Collagenous Colitis doctor near San Jose, CA

      How does MediFind rank Collagenous Colitis doctors near Phoenix, AZ?

      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 Phoenix, AZ?

      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 Phoenix, AZ?

      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 Phoenix, AZ?

      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 Phoenix, AZ?

      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 

      Read more about our Content Policy. 

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