Sean Lynch, MD
NPI 1326222431ActiveIndividual· Internal Medicine, Gastroenterology· Somersworth, NH
Internal Medicine, Gastroenterology (MD) with Atlantic Digestive Specialists PLLC, practicing in Somersworth, New Hampshire. In 2024 Medicare paid $245,483 for 801 patients, and Part D covered 1,417 of their prescriptions, 85% of them generic. Genzyme Corporation was the largest of 2 companies reporting payments in 2025, $59.44 in all, mostly food and beverage. Lists Frisbie Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1326222431 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 26, 2007 |
| Last updated in NPPES | Feb 1, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 15134 | NH |
| Internal Medicine, Gastroenterology | 207RG0100X | 018776 | ME |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 801 |
|---|---|
| Services billed | 8,183 across 65 procedure codes |
| Paid by Medicare | $245,483 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,417 · 2,706 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $147,940 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Atlantic Digestive Specialists PLLCSomersworth, NH · 17 clinicians
Hospital affiliations
- Frisbie Memorial HospitalRochester, NH
- Huggins HospitalWolfeboro, NH
- Portsmouth Regional HospitalPortsmouth, NH
- Wentworth-Douglass HospitalDover, NH
- York HospitalYork, ME
Industry payments (Open Payments)
- 2025$59.44 · 2 payments from 2 companies
- 2024$136.01 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $36.98 | 1 |
| Abbvie Inc. | $22.46 | 1 |
What the 2025 payments were for
- Food and Beverage$59.44 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Gastroenterology providers in New Hampshire →