The 20 Best Diarrhea Doctors Near Me in Portsmouth, NH

Find the Top Diarrhea Experts and Specialists

Last Updated: 09/19/2026

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MediFind found 404 doctor with experience in Diarrhea near Portsmouth, NH. Of these, 384 are Experienced, 19 are Advanced and 1 are Distinguished.

Location
LocationClose
404 providers found
    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Dartmouth-Hitchcock Manchester Laboratory

    100 Hitchcock Way, 
    Manchester, NH 
    Languages Spoken:
    English
    Offers Telehealth

    Diana Pascu is a primary care provider, practicing in Internal Medicine in Manchester, New Hampshire. Dr. Pascu 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 Visceromegaly, Enlarged Liver, Maturity Onset Diabetes of the Young, and Type 2 Diabetes (T2D).

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Nashua Radiology

    2300 Southwood Dr, 
    Nashua, NH 
    Languages Spoken:
    English
    Offers Telehealth

    John Buchanan is a primary care provider, practicing in Family Medicine in Nashua, New Hampshire. Dr. Buchanan is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Gout, Anemia, Maturity Onset Diabetes of the Young, and Type 2 Diabetes (T2D).

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Mary Hitchcock Memorial Hospital

    1 Medical Center Dr, 
    Lebanon, NH 
    Languages Spoken:
    English
    Offers Telehealth

    Neera Gupta is a primary care provider, practicing in Internal Medicine in Lebanon, New Hampshire. Dr. Gupta is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her clinical expertise encompasses Hypothyroidism, Multiple Carboxylase Deficiency, Folate Deficiency, and Vitamin B12 Deficiency Anemia.

    Learn about our expert tiers
    Distinguished in Diarrhea
    Internal Medicine
    Distinguished in Diarrhea
    Internal Medicine

    Beacon Internal Medicine

    155 Borthwick Ave Ste 202W, 
    Portsmouth, NH 
    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. He is also highly rated in 33 other conditions, according to our data. His clinical expertise encompasses Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Maturity Onset Diabetes of the Young. Dr. Davies is currently accepting new patients.

    Advanced in Diarrhea
    Family Medicine
    Advanced in Diarrhea
    Family Medicine

    Cardiovascular Specialists Of New England LLC

    6 Buttrick Rd Ste 200, 
    Londonderry, NH 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Wheeler is a primary care provider, practicing in Family Medicine in Londonderry, New Hampshire. Dr. Wheeler is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 77 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Bronchitis, Obesity, and Osteomyelitis in Children. Dr. Wheeler is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    49 Range Rd Ste 110, 
    Windham, NH 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Paul Macdonald is a primary care provider, practicing in Internal Medicine in Windham, New Hampshire. Dr. Macdonald is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Congenital Sucrase-Isomaltase Deficiency, Glucose-Galactose Malabsorption Deficiency, Glucose Phosphate Isomerase Deficiency, and Glucocorticoid-Remediable Aldosteronism. Dr. Macdonald is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Springfield Medical Care Systems Inc

    250 Ceda Rd, 
    Charlestown, NH 
    Languages Spoken:
    English
    Accepting New Patients

    Daniel Caloras is a primary care provider, practicing in Family Medicine in Charlestown, New Hampshire. Dr. Caloras 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 Hypothyroidism, Obesity in Children, Dementia, and Maturity Onset Diabetes of the Young. Dr. Caloras is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Foundation Medical Partners Inc

    280 Main St, 
    Nashua, NH 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ashima Handa is a primary care provider, practicing in Internal Medicine in Nashua, New Hampshire. Dr. Handa is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Rheumatoid Pneumoconiosis, Rheumatoid Lung Disease, Vasculitis, and Pulmonary Embolism. Dr. Handa is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Cheshire Medical Center

    580 Court St, 
    Keene, NH 
    Languages Spoken:
    English

    Rachel Croteau is a primary care provider, practicing in Family Medicine in Keene, New Hampshire. Dr. Croteau is rated as an Experienced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Idiopathic Edema, Postmenopausal Osteoporosis, Sinusitis, and Grass Allergy.

    Experienced in Diarrhea
    Experienced in Diarrhea

    New England Molecular Imaging LLC

    160 S River Rd, 
    Bedford, NH 
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    James Fitzgerald-Iii is a primary care provider, practicing in Family Medicine in Bedford, New Hampshire. Dr. Fitzgerald-Iii is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Obesity, Congenital Syphilis, Seasonal Affective Disorder (SAD), and Obesity in Children. Dr. Fitzgerald-Iii is currently accepting new patients.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Foundation Medical Partners Inc

    5 Dow Jones Ave, 
    Nashua, NH 
    Languages Spoken:
    English

    Peter Lundquist is a primary care provider, practicing in Internal Medicine in Nashua, New Hampshire. Dr. Lundquist is rated as an Experienced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Richter Syndrome, Chronic B-Cell Leukemia (CBCL), Chronic Lymphocytic Leukemia (CLL), and Peripheral Artery Disease.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Dartmouth Hitchcock Lyme

    204 Dartmouth College Hwy, 
    Lyme, NH 
    Languages Spoken:
    English, Romanian
    Accepting New Patients
    Offers Telehealth

    Claudiu-gily Ionescu-Tajti is a primary care provider, practicing in Internal Medicine in Lyme, New Hampshire. Dr. Ionescu-Tajti 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 Maturity Onset Diabetes of the Young, Hypothyroidism, Type 2 Diabetes (T2D), and Obesity in Children. Dr. Ionescu-Tajti is currently accepting new patients.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Office

    10 Members Way Ste 201, 
    Dover, NH 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Matthew Mitschele is a primary care provider, practicing in Family Medicine in Dover, New Hampshire. Dr. Mitschele is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His clinical expertise encompasses Huntington Disease, Mcleod Neuroacanthocytosis Syndrome, Type 2 Diabetes (T2D), and Glucocorticoid-Remediable Aldosteronism. Dr. Mitschele is currently accepting new patients.

    Advanced in Diarrhea
    Advanced in Diarrhea
    Referral may be required

    New Hampshire Gastroenterology

    9 Washington Pl Ste 204, 
    Bedford, NH 
    Languages Spoken:
    English
    Accepting New Patients

    Angel Fernandez-Segura is a Gastroenterologist practicing medicine in Bedford, New Hampshire. Dr. Fernandez-Segura is rated as an Advanced 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 Diarrhea, Trichohepatoenteric Syndrome, Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy. Dr. Fernandez-Segura is currently accepting new patients.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Concord Hospital-Laconia

    85 Spring St, 
    Laconia, NH 
    Languages Spoken:
    English

    Hillary Conkling is a primary care provider, practicing in Internal Medicine in Laconia, New Hampshire. Dr. Conkling is rated as an Advanced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 22 other conditions, according to our data. Her clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Trichohepatoenteric Syndrome, Diarrhea, and Obesity.

    Advanced in Diarrhea
    Internal Medicine
    Advanced in Diarrhea
    Internal Medicine

    Exeter Hospital

    5 Alumni Dr, 
    Exeter, NH 
    Languages Spoken:
    English

    Chad Cabral is a primary care provider, practicing in Internal Medicine in Exeter, New Hampshire. Dr. Cabral is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Heartburn, Barrett Esophagus, Visceromegaly, and Enlarged Liver.

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

    Atlantic Digestive Specialists PLLC

    21 Clark Way, 
    Somersworth, NH 
    Languages Spoken:
    English
    Offers Telehealth

    William Maher is a Gastroenterologist practicing medicine in Somersworth, New Hampshire. Dr. Maher is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 29 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Visceromegaly, Esophagitis, Endoscopy, and Colonoscopy.

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

    Office

    330 Borthwick Ave Ste 311, 
    Portsmouth, NH 
    Languages Spoken:
    English
    Offers Telehealth

    Robert Ruben is a Gastroenterologist practicing medicine in Portsmouth, New Hampshire. Dr. Ruben is rated as an Advanced provider by MediFind in the treatment of Diarrhea. He is also highly rated in 56 other conditions, according to our data. His clinical expertise encompasses Painful Swallowing, Swallowing Difficulty, Achalasia, Endoscopy, and Colonoscopy.

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

    Dartmouth-Hitchcock Manchester Laboratory

    100 Hitchcock Way, 
    Manchester, NH 
    Languages Spoken:
    English
    Offers Telehealth

    Trinh Meyer is a Gastroenterologist practicing medicine in Manchester, New Hampshire. Dr. Meyer is rated as an Advanced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Crohn's Disease, Gastroesophageal Reflux Disease (GERD), Ulcerative Colitis, Gastrectomy, and Endoscopy.

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

    Exeter Hospital

    5 Alumni Dr, 
    Exeter, NH 
    Languages Spoken:
    English

    Hillary Tompkins is a Gastroenterologist practicing medicine in Exeter, New Hampshire. Dr. Tompkins is rated as an Advanced provider by MediFind in the treatment of Diarrhea. She is also highly rated in 21 other conditions, according to our data. Her clinical expertise encompasses Familial Adenomatous Polyposis, Ulcerative Colitis, Diverticular Disease, Swallowing Difficulty, and Endoscopy.

    Showing 1-20 of 404

    Last Updated: 09/19/2026

    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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