Brian L. Shaffer, MD
NPI 1447247689ActiveIndividual· Internal Medicine· Lawrenceville, NJ
Internal Medicine (MD) in Lawrenceville, New Jersey, licensed in NJ, with an NPI issued in October 2005. Their prescriptions cost Medicare Part D more than their services did: $246,662 for 1,716 claims, against $82,253 paid for services in 2024. Exact Sciences Corporation was the largest of 3 companies reporting payments in 2025, $86.69 in all, mostly food and beverage. Lists Robert Wood Johnson University Hospital at Hamilton as a hospital affiliation.
Overview
| NPI | 1447247689 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 3, 2005 |
| Last updated in NPPES | Apr 2, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA05504600 | NJ |
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 - Internal Medicine (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 187 |
|---|---|
| Services billed | 1,068 across 32 procedure codes |
| Paid by Medicare | $82,253 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,716 · 3,990 30-day fills |
|---|---|
| Patients | 141 |
| Total drug cost | $246,662 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliation
Industry payments (Open Payments)
- 2025$86.69 · 5 payments from 3 companies
- 2024$30.76 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $50.97 | 3 |
| Astrazeneca Pharmaceuticals LP | $18.75 | 1 |
| Novo Nordisk Inc | $16.97 | 1 |
What the 2025 payments were for
- Food and Beverage$86.69 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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