Stephan Kowalyk, M.D.
NPI 1457458168ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Greensburg, PA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Greensburg, Pennsylvania, trained at Rutgers New Jersey Medical School (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $8,508,012 for 18,667 claims, against $165,837 paid for services in 2024. Novo Nordisk Inc was the largest of 33 companies reporting payments in 2025, $81,533 in all, mostly speaking and faculty fees.
Overview
| NPI | 1457458168 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 17, 2006 |
| Last updated in NPPES | Jan 8, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD052412L | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 796 |
|---|---|
| Services billed | 2,350 across 13 procedure codes |
| Paid by Medicare | $165,837 |
Part D prescriptions in 2024
| Prescriptions (claims) | 18,667 · 31,313 30-day fills |
|---|---|
| Patients | 1,965 |
| Total drug cost | $8,508,012 |
| Generic share | 34% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Endocrinology |
Hospital affiliations
- Excela Health - Frick HospitalMount Pleasant, PA
- Excela Health Latrobe HospitalLatrobe, PA
- Excela Health Westmoreland Regional HospitalGreensburg, PA
- Uniontown HospitalUniontown, PA
- West Penn HospitalPittsburgh, PA
Industry payments (Open Payments)
- 2025$81,533 · 349 payments from 33 companies
- 2024$69,006 · 360 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $21,842 | 41 |
| Dexcom, Inc. | $18,252 | 28 |
| Bayer Healthcare Pharmaceuticals Inc. | $14,781 | 18 |
| Lilly USA, LLC | $13,462 | 26 |
| Cequr Corporation | $3,947 | 41 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$48,306 · 29 payments
- Compensation for serving as faculty or as a speaker for a medical education program$19,586 · 13 payments
- Travel and Lodging$7,114 · 18 payments
- Food and Beverage$6,435 · 283 payments
- Long term medical supply or device loan$49.95 · 1 payment
- Education$41.24 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Greensburg
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All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Pennsylvania →