Karen E. Peterson, NP
NPI 1003877911ActiveIndividual· Nurse Practitioner· Leominster, MA
Nurse Practitioner (NP) in Leominster, Massachusetts, licensed in MA, with an NPI issued in March 2006. Their prescriptions cost Medicare Part D more than their services did: $130,628 for 2,312 claims, against $18,676 paid for services in 2024.
Overview
| NPI | 1003877911 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Mar 30, 2006 |
| Last updated in NPPES | Jan 20, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 205602 | MA |
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 - Nurse Practitioner (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 93 |
|---|---|
| Services billed | 254 across 13 procedure codes |
| Paid by Medicare | $18,676 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,312 · 4,692 30-day fills |
|---|---|
| Patients | 365 |
| Total drug cost | $130,628 |
| Generic share | 91% of claims |
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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All 28 nurse practitioners in Leominster · All nurse practitioners in Massachusetts