The 20 Best Diarrhea Doctors Near Me in Merrimack, NH

Find the Top Diarrhea Experts and Specialists

Last Updated: 02/22/2026

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MediFind found 151 doctor with experience in Diarrhea near Merrimack, NH. Of these, 146 are Experienced and 5 are Advanced.

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151 providers found
    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    DH Family Medicine Nashua Inc

    294 Daniel Webster Hwy, 
    Merrimack, NH 
     (2.0 miles away)
    Languages Spoken:
    English

    Thomas Astolfi is a primary care provider, practicing in Family Medicine in Merrimack, New Hampshire. Dr. Astolfi is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are High Cholesterol, Maturity Onset Diabetes of the Young, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    DH Family Medicine Nashua Inc

    294 Daniel Webster Hwy, 
    Merrimack, NH 
     (2.0 miles away)
    Languages Spoken:
    English

    Archie Dickinson is a primary care provider, practicing in Family Medicine in Merrimack, New Hampshire. Dr. Dickinson is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, High Potassium Level, and Gout.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    St. Joseph Hospital Family Medicine & Specialty Services-Merrimack

    4 Dobson Way, 
    Merrimack, NH 
     (2.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Patrick Leong is a primary care provider, practicing in Internal Medicine in Merrimack, New Hampshire. Dr. Leong is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Asthma in Children, Asthma, Grass Allergy, and Enlarged Prostate (BPH).

    Learn about our expert tiers
    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    St. Joseph Hospital Family Medicine & Specialty Services-Merrimack

    4 Dobson Way, 
    Merrimack, NH 
     (2.0 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Corey Gittleman is a primary care provider, practicing in Family Medicine in Merrimack, New Hampshire. Dr. Gittleman 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 Obesity, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    St. Joseph Hospital Family Medicine & Specialty Services-Merrimack

    4 Dobson Way, 
    Merrimack, NH 
     (2.0 miles away)
    Languages Spoken:
    English

    Nicola Kernan is a primary care provider, practicing in Family Medicine in Merrimack, New Hampshire. Dr. Kernan is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Epidermolytic Palmoplantar Keratoderma, Cutis Gyrata Syndrome, Pseudoxanthoma Elasticum, and Rothmund-Thomson Syndrome.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Foundtion Medical Partners Inc

    696 Daniel Webster Hwy, 
    Merrimack, NH 
     (2.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Patrick Nguyen is a primary care provider, practicing in Family Medicine in Merrimack, New Hampshire. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are High Cholesterol, Hypothyroidism, Metabolic Syndrome, and Infant Hyperglycemia.

    Experienced in Diarrhea
    Experienced in Diarrhea

    Office

    275 Mammoth Rd, 
    Manchester, NH 
     (7.7 miles away)
    Experience:
    44+ years
    Languages Spoken:
    English
    Offers Telehealth

    Muhammad Pasha is a primary care provider, practicing in Geriatrics in Manchester, New Hampshire. Dr. Pasha has been practicing medicine for over 44 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Alzheimer's Disease, Dementia, Lung Metastases, and Glucocorticoid-Remediable Aldosteronism.

    Advanced in Diarrhea
    Gastroenterology
    Advanced in Diarrhea
    Gastroenterology

    New Hampshire Gastroenterology

    9 Washington Pl Ste 204, 
    Bedford, NH 
     (6.5 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Angel Fernandez is a Gastroenterologist in Bedford, New Hampshire. Dr. Fernandez is rated as an Advanced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy. Dr. Fernandez is currently accepting new patients.

    Advanced in Diarrhea
    Advanced in Diarrhea

    Jwalant Vadalia MD PC

    138 Webster St, 
    Manchester, NH 
     (9.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Masooma Athar is a primary care provider, practicing in Geriatrics in Manchester, New Hampshire. Dr. Athar is rated as an Advanced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Dementia, Alzheimer's Disease, Morning Sickness, Anemia, and Endoscopy.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    River RD. Pediatrics P.L.L.C.

    58 Hawthorne Dr, 
    Bedford, NH 
     (5.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Dean Morris is a primary care provider, practicing in Family Medicine in Bedford, New Hampshire. Dr. Morris is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hemophilia B, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), and Pudendal Neuralgia.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Office

    160 S River Rd Ste 2400, 
    Bedford, NH 
     (5.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Marcio Jablonka is a primary care provider, practicing in Internal Medicine in Bedford, New Hampshire. Dr. Jablonka is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Type 2 Diabetes (T2D), Osteomyelitis in Children, Sitosterolemia, and High Cholesterol.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Office

    160 S River Rd Ste 101A, 
    Bedford, NH 
     (5.2 miles away)
    Languages Spoken:
    English
    Offers Telehealth

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

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Willowbend Family Practice

    5 Washington Pl Ste 1A, 
    Bedford, NH 
     (5.2 miles away)
    Languages Spoken:
    English

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

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Bedford Internal Medicine & Pediatrics

    188 Route 101, 
    Bedford, NH 
     (5.3 miles away)
    Languages Spoken:
    English

    Jennifer Fishbein is a primary care provider, practicing in Internal Medicine in Bedford, New Hampshire. Dr. Fishbein is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Lung Metastases, Heart Failure with Preserved Ejection Fraction (HFpEF), Glucocorticoid-Remediable Aldosteronism, and Hypertension.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Granite State Internal Medicine

    188 Route 101, 
    Bedford, NH 
     (5.3 miles away)
    Languages Spoken:
    English

    Lea Gottfredsen is a primary care provider, practicing in Internal Medicine in Bedford, New Hampshire. Dr. Gottfredsen is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Rhizomelic Pseudopolyarthritis, Polymyalgia Rheumatica, Type 1 Diabetes (T1D), and Maturity Onset Diabetes of the Young.

    Experienced in Diarrhea
    Internal Medicine
    Experienced in Diarrhea
    Internal Medicine

    Bedford Internal Medicine & Pediatrics

    188 Route 101, 
    Bedford, NH 
     (5.3 miles away)
    Languages Spoken:
    English

    Jeffrey Calegari is a primary care provider, practicing in Internal Medicine in Bedford, New Hampshire. Dr. Calegari is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Hypertension, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, Vertebroplasty, and Bone Graft.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    St Joseph Hospital Family Medicine

    208 Robinson Rd, 
    Hudson, NH 
     (5.3 miles away)
    Languages Spoken:
    English

    Phillip Fichera is a primary care provider, practicing in Family Medicine in Hudson, New Hampshire. Dr. Fichera is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Single Palmar Crease, Dyskeratosis Congenita, Circumferential Skin Creases Kunze Type, and Cutis Gyrata Syndrome.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Office

    50 Michels Way Unit 102, 
    Londonderry, NH 
     (5.4 miles away)
    Languages Spoken:
    English

    Christine Hand is a primary care provider, practicing in Family Medicine in Londonderry, New Hampshire. Dr. Hand is rated as an Experienced provider by MediFind in the treatment of Diarrhea. Her top areas of expertise are Obesity, Type 2 Diabetes (T2D), Obesity in Children, and Generalized Anxiety Disorder (GAD).

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Cardiovascular Specialists Of New England LLC

    6 Buttrick Rd Ste 200, 
    Londonderry, NH 
     (5.4 miles away)
    Experience:
    47+ years
    Languages Spoken:
    English

    Dennis Rork is a primary care provider, practicing in Family Medicine in Londonderry, New Hampshire. Dr. Rork has been practicing medicine for over 47 years and is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Obesity, Generalized Anxiety Disorder (GAD), Cirrhosis, and Familial Combined Hyperlipidemia.

    Experienced in Diarrhea
    Family Medicine
    Experienced in Diarrhea
    Family Medicine

    Cardiovascular Specialists Of New England LLC

    6 Buttrick Rd Ste 200, 
    Londonderry, NH 
     (5.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Daniel Waszkowski is a primary care provider, practicing in Family Medicine in Londonderry, New Hampshire. Dr. Waszkowski is rated as an Experienced provider by MediFind in the treatment of Diarrhea. His top areas of expertise are Obesity, Autoerythrocyte Sensitivity, Gardner-Diamond Syndrome, and Purpura.

    Showing 1-20 of 151

    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 Merrimack, 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 Merrimack, 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 Merrimack, 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 Merrimack, 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 Merrimack, 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 Merrimack, 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 Merrimack, 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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