Atlantic Digestive Specialists
Gastroenterology • Somersworth, NH • Since 1973
About
Atlantic Digestive Specialists is a private gastroenterology practice based in Somersworth, NH (founded 1973). They offer GI consultations, colonoscopy and endoscopy services, and operate a patient portal. The practice has 5 offices in New Hampshire (including Somersworth HQ at 21 Clark Way) and Portsmouth/Hampton area coverage. Board-certified gastroenterologists (Drs. Damianos, Epstein, Grondin, Hyett, Kesar, Lewis, Lynch, Maher, Munot, Ruben) provide care for esophagus, stomach, intestines, liver, and pancreas conditions. They report ~14 employees with annual revenue between $5M–$25M, and an employer rating of 4.4/5 based on 4 reviews. Contact: (603) 433-2488 or (603) 692-2228.
Clinic Type
Gastroenterology
Address
21 Clark Way, Route 108 Somersworth, NH 03878
Phone
(603) 692-2228
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Opening Hours
8:00 am - 5:00 pm
Services Offered
Insurance & Payment
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Languages Spoken
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Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye: 4.3/5 (601)
- WebMD: Not specifically aggregated (1)
Patients praise
- Some physicians described as knowledgeable, efficient, and caring
- Instances of effective diagnosis and treatment for specific conditions like IBS
- Staff noted as professional by some patients
Common complaints
- Reports of unprofessional, rude, or dismissive staff and physician bedside manner
- Issues with appointment scheduling, communication, and responsiveness
- Concerns regarding medical outcomes, specifically regarding post-procedure complications
- Complaints about billing and charges
"If I could leave a review with no stars I would. These are people who will not even return a call to confirm an appointment for a colonoscopy... The actual doctors might be great, but their support staff? HORRIFIC......"
— Birdeye review"Heavy bleeding two days after the first one; E.R visit to repair leaks for second visit. Atlantic Digestive admits to no mistakes, wrongdoing, or responsibility, and does not answer my written correspondence."
— WebMD review"Dr Marylyn Grondin was truly amazing! She is compassionate , friendly, efficient while still remaining profession but on such a different level than most ..."
— Atlantic Digestive Specialists websiteSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
Information sourced from the clinic's website as of July 11, 2026.
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