Stefan G. Karos, M.D.
NPI 1376530378ActiveIndividual· Urology· Leominster, MA
Urology (M.D.) in Leominster, Massachusetts, licensed in MA, with an NPI issued in October 2005. 180 Medicare patients in 2024, $34,807 paid; all of their 488 Part D prescriptions were generic. Lists Umass Memorial Healthalliance Hospitals and 1 other hospital as hospital affiliations.
Overview
| NPI | 1376530378 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 4, 2005 |
| Last updated in NPPES | Jun 18, 2021 |
| Certified by provider | Jun 18, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 73838 | 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 - Urology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 180 |
|---|---|
| Services billed | 377 across 31 procedure codes |
| Paid by Medicare | $34,807 |
Part D prescriptions in 2024
| Prescriptions (claims) | 488 · 1,127 30-day fills |
|---|---|
| Patients | 148 |
| Total drug cost | $12,632 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Urology |
Hospital affiliations
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, 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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