Timothy Earl Sass, M.D.
NPI 1265573166ActiveIndividual· Internal Medicine· Princeton, NJ
Internal Medicine (M.D.) in Princeton, New Jersey, trained at George Washington University School of Medicine (class of 1984). 297 Medicare patients in 2024, $187,607 paid; nearly all of their 2,690 Part D prescriptions were generic (94%). Pfizer Inc. was the largest of 6 companies reporting payments in 2025, $194.24 in all, mostly food and beverage.
Overview
| NPI | 1265573166 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 12, 2007 |
| Last updated in NPPES | Jan 12, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA05084900 | 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 | 297 |
|---|---|
| Services billed | 5,265 across 50 procedure codes |
| Paid by Medicare | $187,607 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,690 · 6,398 30-day fills |
|---|---|
| Patients | 302 |
| Total drug cost | $152,272 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- University Medical Center of Princeton at PlainsboroPlainsboro, NJ
Other facilities
- Penn Medicine Home Health Princeton HealthHome health agency · Princeton, NJ
- Robert Wood Johnson Visiting Nurses, IncHome health agency · North Brunswick, NJ
Industry payments (Open Payments)
- 2025$194.24 · 10 payments from 6 companies
- 2024$270.85 · 10 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $73.11 | 4 |
| Exact Sciences Corporation | $54.66 | 2 |
| Astrazeneca Pharmaceuticals LP | $18.37 | 1 |
| Merck Sharp & Dohme LLC | $17.85 | 1 |
| Bavarian Nordic A/S | $15.34 | 1 |
What the 2025 payments were for
- Food and Beverage$194.24 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 93 internal medicine physicians in Princeton · All internal medicine physicians in New Jersey