The 20 Best Diarrhea Doctors Near Me in happy valley, OR

Find the Top Diarrhea Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 214 doctor with experience in Diarrhea near happy valley, OR. Of these, 204 are Experienced, 8 are Advanced and 1 are Elite.

Location
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214 providers found
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required

    Oregon Clinic PC

    1111 NE 99th Ave, 
    Portland, OR 
     (6.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Harry Bray is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Bray is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Ulcerative Colitis, Hemorrhagic Proctocolitis, Crohn's Disease, Viral Gastroenteritis, and Endoscopy. Dr. Bray is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required

    Office

    1111 NE 99th Ave, 
    Portland, OR 
     (6.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Phillip Kiyasu is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Kiyasu is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Crohn's Disease, Ulcerative Colitis, Familial Adenomatous Polyposis, Gardner Syndrome, and Endoscopy. Dr. Kiyasu is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Rebecca Fausel is a Gastroenterologist practicing medicine in Portland, Oregon. She has been practicing medicine for over 18 years. Dr. Fausel is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Ulcerative Colitis, Crohn's Disease, Colitis, Colonoscopy, and Endoscopy. Dr. Fausel is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Phillips is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Phillips is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Bile Duct Obstruction, Ulcerative Colitis, Crohn's Disease, Endoscopy, and Gastrectomy. Dr. Phillips is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Don Lum is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Lum is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Crohn's Disease, Ulcerative Colitis, Painful Swallowing, Swallowing Difficulty, and Endoscopy. Dr. Lum is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English, Mandarin
    Accepting New Patients
    Offers Telehealth

    Hong Shen is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Shen is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, and Crohn's Disease. Dr. Shen is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    James Regan is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Regan is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Bile Duct Obstruction, Painful Swallowing, Swallowing Difficulty, Endoscopy, and Gastrectomy. Dr. Regan is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English, Mandarin
    Offers Telehealth

    Anne Wang is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Wang is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Crohn's Disease, Familial Adenomatous Polyposis, Gardner Syndrome, Endoscopy, and Colonoscopy.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Alan Savoy is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Savoy is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Angiodysplasia of the Colon, Familial Adenomatous Polyposis, Crohn's Disease, Gardner Syndrome, and Endoscopy. Dr. Savoy is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Sidharth Bhardwaj is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Bhardwaj is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Crohn's Disease, Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, and Endoscopy. Dr. Bhardwaj is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jeremy Holden is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Holden is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Visceromegaly, Ascites, Alcoholic Cirrhosis, Cirrhosis, and Endoscopy. Dr. Holden is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Viju Deenadayalu is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Deenadayalu is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Familial Adenomatous Polyposis, Ulcerative Colitis, Turcot Syndrome, and Gardner Syndrome. Dr. Deenadayalu is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ken Flora is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Flora is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Ascites, Hepatitis C, Hepatitis, Endoscopy, and Colonoscopy. Dr. Flora is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Betty Kim is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Crohn's Disease, Ulcerative Colitis, Familial Adenomatous Polyposis, Painful Swallowing, and Colonoscopy. Dr. Kim is currently accepting new patients.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology
    Referral may be required
    1111 Northeast 99th Avenue, Suite 301, 
    Portland, OR 
     (7.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Amy Zhu is a Gastroenterologist practicing medicine in Portland, Oregon. Dr. Zhu is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Ulcerative Colitis, Crohn's Disease, Familial Adenomatous Polyposis, and Eosinophilic Esophagitis. Dr. Zhu is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Legacy Medical Group-Lake Oswego-A Department Of Legacy Meridian Park Medical Center

    412 A Ave Ste 200, 
    Lake Oswego, OR 
     (8.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Joshua Gepner is a primary care provider, practicing in Family Medicine in Lake Oswego, Oregon. Dr. Gepner is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Infant Hyperglycemia, High Cholesterol, Cirrhosis, and Familial Combined Hyperlipidemia. Dr. Gepner is currently accepting new patients.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology
    Referral may be required

    Kaiser Permanente Sunnybrook Medical Office - Gastroenterology Department

    9900 SE Sunnyside Rd, 
    Clackamas, OR 
     (2.5 miles away)
    Languages Spoken:
    English, Hindi, Mandarin, Portuguese, Punjabi, Spanish
    Accepting New Patients
    Offers Telehealth

    Vikas Garg is a Gastroenterologist practicing medicine in Clackamas, Oregon. Dr. Garg is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Hepatitis C, Familial Adenomatous Polyposis, Gardner Syndrome, Gastrectomy, and Endoscopy. Dr. Garg is currently accepting new patients.

    Nurse Practitioner
    Nurse Practitioner
    Referral may be required

    Pohala Clinic PC

    7477 SE 52nd Ave, 
    Portland, OR 
     (5.1 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English, Spanish
    Offers Telehealth

    Stefanie Aring is a Nurse Practitioner practicing medicine in Portland, Oregon. She has been practicing medicine for over 10 years. Aring, NP is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Endometriosis, Insomnia, Irritable Bowel Syndrome (IBS), Major Depression, and Hormone Replacement Therapy (HRT). Aring, NP is board certified in Aanp.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Legacy Meridian Park Medical Center

    19300 SW 65th Ave, 
    Tualatin, OR 
     (11.9 miles away)
    Languages Spoken:
    English

    Mohammed Taher is a primary care provider, practicing in Internal Medicine in Tualatin, Oregon. Dr. Taher is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Diarrhea, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

    Experienced in Diarrhea
    Experienced in Diarrhea
    Referral may be required

    Office

    9300 SE 91st Ave Ste 200, 
    Happy Valley, OR 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Shelley Hartman is a Pediatrics provider practicing medicine in Happy Valley, Oregon. Dr. Hartman is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Oppositional Defiant Disorder (ODD), Croup, Obesity in Children, and Delayed Growth. Dr. Hartman is currently accepting new patients.

    Showing 1-20 of 214

    Last Updated: 09/26/2026

    What is the definition of Diarrhea?

    Diarrhea is when you pass loose or watery stool.

    When should I see a Diarrhea doctor near happy valley, OR?

    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 Diarrhea doctor near happy valley, OR?

    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 Diarrhea doctors near happy valley, OR?

    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 Diarrhea doctors near happy valley, OR?

    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 Diarrhea doctor near happy valley, OR?

    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 Diarrhea doctor search results page. 

    Why is it important to get a second opinion from a different Diarrhea 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 Diarrhea doctor near happy valley, OR?

    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 Diarrhea 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 Diarrhea 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 Diarrhea doctors near happy valley, OR?

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

    Look for the filter feature on the left-side of the Diarrhea 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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