Kathryn P. O'Brien
NPI 1811472426ActiveIndividual· Nurse Practitioner, Family· Salem, MA
Nurse Practitioner, Family with Mass General Brigham Medical Group Northern Massachusetts Inc, practicing in Salem, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $275,603 for 4,089 claims, against $60,286 paid for services in 2024. Astrazeneca Pharmaceuticals LP reported $103.77 in payments in 2025, mostly food and beverage. Lists Massachusetts General Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1811472426 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Sep 28, 2018 |
| Last updated in NPPES | Sep 13, 2024 |
| Certified by provider | Sep 13, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | RN2318509 | 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 | 442 |
|---|---|
| Services billed | 900 across 33 procedure codes |
| Paid by Medicare | $60,286 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,089 · 8,831 30-day fills |
|---|---|
| Patients | 1,046 |
| Total drug cost | $275,603 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA · 827 clinicians
Hospital affiliations
- Massachusetts General HospitalBoston, MA
- North Shore Medical Center -Salem, MA
Industry payments (Open Payments)
- 2025$103.77 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $103.77 | 1 |
What the 2025 payments were for
- Food and Beverage$103.77 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 49 family nurse practitioners in Salem · All family nurse practitioners in Massachusetts