Dr. Marylyn Grondin, MD

Dr. Marylyn Grondin, MD

Gastroenterology  ·  
Female  ·  
Age 65
Dr. Marylyn Grondin, MD is a gastroenterology specialist in Portsmouth, NH. She graduated from University La Salle / Mexican School Of Medicine and specializes in gastroenterology and internal medicine.

330 Borthwick Ave Ste 311

Portsmouth, NH 03801

Contact Information

(603) 433-2488

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Massachusetts
  • Cigna
  • Commercial Insurance Company
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Harvard Pilgrim Health Care
  • Humana
  • 5 More

*Please verify this information when scheduling an appointment.

Learn about Dr. Grondin

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Grondin performs your care needs compared to other doctors.

Irritable Bowel Syndrome
very high
more than 99% of peers
Abdominal Disorders
very high
more than 97% of peers
very high
more than 96% of peers

Dr. Grondin's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

2  Specialties

  • Gastroenterology
  • Internal Medicine

2  Board Certifications

  • Gastroenterology
    Accredited by: American Board of Medical Specialties*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

72  Conditions Treated


Read Less

16  Procedures

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for New Hampshire.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University Of Colorado
    Undergraduate School | Graduated
  • University La Salle / Mexican School Of Medicine
    Medical School | Graduated
  • Bridgeport Hosp/Yale U
    Residency Hospital | Completed
  • W Va U
    Fellowship Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Grondin has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. Grondin does not have any memberships or affiliations listed. If you are Dr. Grondin and would like to add memberships or affiliations, please update your profile.

Dr. Grondin's Reviews

Likelihood of recommending Dr. Grondin to family and friends
11 total reviews (4 have comments)

Likelihood to Recommend (11)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Grondin's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (4)

My daughter, husband and I have been going to Dr. Grondin for years, not only for colonoscopies but for other related problems. I get very nervous going to doctors but not with her. She makes me feel so comfortable and at ease. You feel as if you were visiting a friend. She never rushes and...more
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I just had my first appointment and she's wonderful. She's personable and really listens.
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I have had to have 3 colonoscopy's over the years and have had Dr Grondin every time. In my opinion she is fantastic, answers all questions and takes the time to make you feel comfortable about the procedure. My mother also has had Dr Grondin and is the one to recommend her to me. I wouldn't even...more
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She is very thorough and professional but made me feel very relaxed about my procedure. We discussed my medical and family history and I found her to be very attentive and ask thoughtful questions. I very much appreciated her bedside manner before and after the procedure.
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