Sonja Schaffer
NPI 1336694439ActiveIndividual· Nurse Practitioner, Family· Charlton, MA
Nurse Practitioner, Family in Charlton, Massachusetts, trained at University of Massachusetts Medical School (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $188,505 for 2,149 claims, against $14,812 paid for services in 2024.
Overview
| NPI | 1336694439 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Aug 18, 2016 |
| Last updated in NPPES | May 7, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | RN2289480 | 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 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 - Nurse Practitioner (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 180 across 19 procedure codes |
| Paid by Medicare | $14,812 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,149 · 4,849 30-day fills |
|---|---|
| Patients | 214 |
| Total drug cost | $188,505 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Massachusetts Medical School |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Nurse Practitioner |
Medical groups
- Umass Memorial Medical Group IncWorcester, MA · 2,516 clinicians
- Saint Vincent Physician Services IncWorcester, MA · 71 clinicians
- Shane Speirs MD II PLLCSterling, MA · 17 clinicians
Hospital affiliations
- St Vincent HospitalWorcester, MA
- Umass Memorial Health - Harrington HospitalSouthbridge, 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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