Atlantic Digestive Specialists
Gastroenterology • Somersworth, NH • Since 1973
Information from public sources; not independently verified. Confirm hours, insurance and appointment availability with the clinic.
Last gathered July 11, 2026. How our information is sourced · Report incorrect information
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.
Services Offered
Insurance & Payment
Not published.
Languages Spoken
Not published.
Social Media
Photos
Photos published by Atlantic Digestive Specialists showing the gastroenterology practice in Somersworth, NH.
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
- Kerry M. Loan - Physician Assistant in Somersworth, NH - May 14, 2026
- Dr. David N. Lunianski, DO - Family Medicine Doctor in Somersworth, NH - May 14, 2026
- Dr. Lauren C. Lessard, MD - Family Medicine Doctor in Somersworth, NH - May 14, 2026
- Seacoast health centers earn Patient-Centered Medical Home Recognition - May 18, 2026
- Bravo pH Probe Study in Bedford, NH and Londonderry, NH | Granite State Gastroenterology - Dec 1, 2025
Information sourced from the clinic's website as of July 11, 2026.
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