Thomas R. Merring, P.A.
NPI 1447507421ActiveIndividual· Physician Assistant· Wilmington, DE
Physician Assistant (P.A.) with Regional Orthopaedic Associates PA, practicing in Wilmington, Delaware. 271 Medicare patients in 2024, $40,303 paid; nearly all of their 1,578 Part D prescriptions were generic (98%). Pacira Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $1,072 in all, mostly travel and lodging. Lists Christiana Hospital as a hospital affiliation.
Overview
| NPI | 1447507421 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A. |
| Sole proprietor | No |
| NPI issued | Aug 9, 2012 |
| Last updated in NPPES | Aug 9, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | DE |
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 (DE); Practitioner - Physician Assistant (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 271 |
|---|---|
| Services billed | 291 across 21 procedure codes |
| Paid by Medicare | $40,303 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,578 · 1,727 30-day fills |
|---|---|
| Patients | 386 |
| Total drug cost | $19,088 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Regional Orthopaedic Associates PAChadds Ford, PA · 62 clinicians
Hospital affiliation
- Christiana HospitalNewark, DE
Industry payments (Open Payments)
- 2025$1,072 · 11 payments from 2 companies
- 2024$180.79 · 8 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pacira Pharmaceuticals Incorporated | $847.99 | 4 |
| Stryker Corporation | $223.51 | 7 |
What the 2025 payments were for
- Travel and Lodging$786.34 · 2 payments
- Food and Beverage$285.16 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 142 physician assistants in Wilmington · All physician assistants in Delaware