Nathaniel J. Merrell, M.D.
NPI 1922162262ActiveIndividual· Surgery· Leominster, MA
Surgery (M.D.) in Leominster, Massachusetts, trained at University of Rochester School of Medicine and Dentistry (class of 1987). 226 Medicare patients in 2024, $55,209 paid; nearly all of their 129 Part D prescriptions were generic (97%).
Overview
| NPI | 1922162262 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 21, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 72557 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 451 across 63 procedure codes |
| Paid by Medicare | $55,209 |
Part D prescriptions in 2024
| Prescriptions (claims) | 129 · 140 30-day fills |
|---|---|
| Patients | 83 |
| Total drug cost | $569.77 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | General Surgery |
Medical group
- R Leslie Shelton MD PCLeominster, MA · 2 clinicians
Hospital affiliations
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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