Evan James Callahan, DO
NPI 1184309122ActiveIndividual· Internal Medicine· Laconia, NH
Internal Medicine (DO) in Laconia, New Hampshire, licensed in NH and PA, with an NPI issued in June 2023. Part D covered 146 prescriptions written in 2024, 83% of them generic. Shockwave Medical, Inc was the largest of 8 companies reporting payments in 2025, $670.60 in all, mostly food and beverage.
Overview
| NPI | 1184309122 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Jun 19, 2023 |
| Last updated in NPPES | Aug 11, 2026 |
| Certified by provider | Aug 11, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 40056 | NH |
| Internal Medicine | 207R00000X | OT022669 | PA |
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 - Internal Medicine (NH); Practitioner - Internal Medicine (PA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 146 · 147 30-day fills |
|---|---|
| Patients | 66 |
| Total drug cost | $7,531 |
| Generic share | 83% of claims |
Industry payments (Open Payments)
- 2025$670.60 · 14 payments from 8 companies
- 2024$211.69 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Shockwave Medical, Inc | $284.66 | 7 |
| Madrigal Pharmaceuticals | $117.50 | 1 |
| Novartis Pharmaceuticals Corporation | $77.59 | 1 |
| Amgen Inc. | $73.52 | 1 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $45.99 | 1 |
What the 2025 payments were for
- Food and Beverage$670.60 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Laconia
- 1326408709
- 1700331584
- 1396947172
- 1487395141
- 1053798876
- 1568984821
- 1881036762
- 1699974535
- 1366468928
- 1598327926
- 1922732734
- 1598792426