Robert S. Ketchum, PA-C
NPI 1578702197ActiveIndividual· Physician Assistant· Portsmouth, NH
Physician Assistant (PA-C) with Atlantic Digestive Specialists PLLC, practicing in Portsmouth, New Hampshire. In 2024 Medicare paid $14,521 for 76 patients, and Part D covered 129 of their prescriptions, 83% of them generic. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $1,232 in all, mostly food and beverage. Lists Exeter Hospital Inc and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1578702197 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Feb 5, 2009 |
| Last updated in NPPES | May 16, 2024 |
| Certified by provider | May 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 2194 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (ME); Practitioner - Physician Assistant (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 76 |
|---|---|
| Services billed | 226 across 11 procedure codes |
| Paid by Medicare | $14,521 |
Part D prescriptions in 2024
| Prescriptions (claims) | 129 · 165 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $13,446 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Atlantic Digestive Specialists PLLCSomersworth, NH · 17 clinicians
Hospital affiliations
- Exeter Hospital IncExeter, NH
- Portsmouth Regional HospitalPortsmouth, NH
- Wentworth-Douglass HospitalDover, NH
- York HospitalYork, ME
Industry payments (Open Payments)
- 2025$1,232 · 43 payments from 15 companies
- 2024$184.57 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $288.14 | 18 |
| Qol Medical, LLC | $181.94 | 5 |
| Phathom Pharmaceuticals, Inc. | $166.46 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $132.07 | 4 |
| Novo Nordisk Inc | $127.57 | 2 |
What the 2025 payments were for
- Food and Beverage$1,232 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Portsmouth
- 1053006445
- 1053098418
- 1104147701
- 1235918368
- 1245907666
- 1255859757
- 1275258428
- 1316535982
- 1396470134
- 1477719508
- 1528745403
- 1548829005
All 56 physician assistants in Portsmouth · All physician assistants in New Hampshire