The 20 Best Diarrhea Doctors Near Me in Portsmouth, NH

Find the Top Diarrhea Experts and Specialists

The 20 Best Diarrhea Doctors near Portsmouth, NH

Last Updated: 02/22/2026

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MediFind found 80 doctor with experience in Diarrhea near Portsmouth, NH. Of these, 66 are Experienced, 13 are Advanced and 1 are Distinguished.

Location
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80 providers found
    Distinguished in Diarrhea
    Internal Medicine
    Distinguished in Diarrhea
    Internal Medicine

    Beacon Internal Medicine

    155 Borthwick Ave Ste 202W, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Daniel Davies is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Davies is rated as a Distinguished provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Maturity Onset Diabetes of the Young. Dr. Davies is currently accepting new patients.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    MDVIP - Kittery, ME

    42 State Rd Unit 103, 
    Kittery, ME 
     (1.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Philip Abraham is a primary care provider, practicing in Internal Medicine in Kittery, Maine. Dr. Abraham is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Viral Gastroenteritis, Colitis, Diarrhea, Endoscopy, and Colonoscopy. Dr. Abraham is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Portsmouth Internal Medicine

    100 Eileen Dondero Foley Ave Ste 300, 
    Portsmouth, NH 
     (1.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Sara Erickson is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Erickson is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and Hypothyroidism. Dr. Erickson is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Robert Ruben is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Ruben is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Swallowing Difficulty, Painful Swallowing, Achalasia, Endoscopy, and Colonoscopy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Brian Hyett is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Hyett is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Barrett Esophagus, Hepatitis, Ascites, Endoscopy, and Colonoscopy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Aristotle Damianos is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Damianos is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Barrett Esophagus, Trichohepatoenteric Syndrome, Crohn's Disease, Endoscopy, and Gastrostomy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Roger Epstein is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Epstein has been practicing medicine for over 44 years and is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Trichohepatoenteric Syndrome, Ascites, Endoscopy, and Colonoscopy.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Marylyn Grondin is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Grondin is rated as an Advanced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Crohn's Disease, Diarrhea, Trichohepatoenteric Syndrome, and Barrett Esophagus.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    York Hospital

    35 Walker St, 
    Kittery, ME 
     (1.2 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Nathan Jean is a primary care provider, practicing in Family Medicine in Kittery, Maine. Dr. Jean has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Alzheimer's Disease, Coronary Heart Disease, Small Cell Lung Cancer (SCLC), Hip Replacement, and Pacemaker Implantation.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Lens Doctors

    605 Lafayette Rd, 
    Portsmouth, NH 
     (1.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Stevens is a primary care provider, practicing in Family Medicine in Portsmouth, New Hampshire. Dr. Stevens is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Hypertension, and High Cholesterol.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    100 Eileen Dondero Foley Ave Ste 300, 
    Portsmouth, NH 
     (1.6 miles away)
    Languages Spoken:
    English

    Ira Schwartz is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Schwartz is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, Hypertension, and Sitosterolemia.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Martins Point Health Care

    161 Corporate Dr, 
    Portsmouth, NH 
     (2.2 miles away)
    Languages Spoken:
    English

    Steven Olive is a primary care provider, practicing in Family Medicine in Portsmouth, New Hampshire. Dr. Olive is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Multiple Myeloma, High Cholesterol, Familial Hypertension, and Hypertension.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine
    330 Borthwick Ave, Suite 205, 
    Portsmouth, NH 
     (2.2 miles away)
    Languages Spoken:
    English

    Thomas Clairmont is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Clairmont is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Barrett Esophagus.

    Experienced in Diarrhea
    Gastroenterology
    Experienced in Diarrhea
    Gastroenterology

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Dalia Mahmoud is a Gastroenterologist in Portsmouth, New Hampshire. Dr. Mahmoud is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Crohn's Disease, Bile Duct Obstruction, Gallstones, Endoscopy, and Colonoscopy.

    Experienced in Diarrhea
    Pediatrics
    Experienced in Diarrhea
    Pediatrics

    Thoracic & Vascular Associates

    200 Griffin Rd Ste 6, 
    Portsmouth, NH 
     (2.6 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English

    Adam Kurish is a primary care provider, practicing in Pediatrics in Portsmouth, New Hampshire. Dr. Kurish has been practicing medicine for over 18 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Nontuberculous Mycobacterial Lung Disease, Chronic Lymphocytic Leukemia (CLL), Striatonigral Degeneration Infantile, Endoscopy, and Pacemaker Implantation.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    875 Greenland Rd Bldg A, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Magued Rizkalla is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Rizkalla is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Acute Kidney Failure, Ascites, End-Stage Renal Disease (ESRD), and Dementia.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Susan Krolewski

    264 Lafayette Rd Ste 9, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Susan Krolewski is a primary care provider, practicing in Family Medicine in Portsmouth, New Hampshire. Dr. Krolewski is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Sitosterolemia, Collagenous Colitis, High Cholesterol, and Dermatomyositis.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Appledore Family Medicine And Pediatrics - Portsmouth

    25 New Hampshire Ave Ste 100, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Karen Palmer is a primary care provider, practicing in Family Medicine in Portsmouth, New Hampshire. Dr. Palmer is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Sitosterolemia, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Wentworth Douglass Hospital

    67 Corporate Dr Bldg A, 
    Portsmouth, NH 
     (2.6 miles away)
    Languages Spoken:
    English

    Alison Sollee is a primary care provider, practicing in Internal Medicine in Portsmouth, New Hampshire. Dr. Sollee is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Hypothyroidism, Complex Regional Pain Syndrome, Obesity in Children, and Familial Hypertension.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    MDVIP - York, ME

    1 Brickyard Ln Ste Cc, 
    York, ME 
     (7.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Joel Keenan is a primary care provider, practicing in Internal Medicine in York, Maine. Dr. Keenan is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Movement Disorders, Parkinson's Disease, Acute Kidney Failure, and Hypertension. Dr. Keenan is currently accepting new patients.

    Showing 1-20 of 80

    Last Updated: 02/22/2026

    What is the definition of Diarrhea?

    Diarrhea is when you pass loose or watery stool.

    When should I see a Diarrhea doctor near Portsmouth, NH?

    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 Portsmouth, NH?

    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 Portsmouth, NH?

    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 Portsmouth, NH?

    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 Portsmouth, NH?

    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 Portsmouth, NH?

    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 Portsmouth, NH?

    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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