Mark Kevin Greathouse, MD
NPI 1093796542ActiveIndividual· Internal Medicine, Cardiovascular Disease· Pittsburgh, PA
Internal Medicine, Cardiovascular Disease (MD) in Pittsburgh, Pennsylvania, trained at West Virginia University School of Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $679,283 for 4,511 claims, against $68,511 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 17 companies reporting payments in 2025, $1,020 in all, mostly food and beverage.
Overview
| NPI | 1093796542 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 10, 2005 |
| Last updated in NPPES | Jan 20, 2024 |
| Certified by provider | Jan 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | MD032259E | PA |
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 - Cardiovascular Disease (Cardiology) (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 576 |
|---|---|
| Services billed | 1,451 across 18 procedure codes |
| Paid by Medicare | $68,511 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,511 · 9,459 30-day fills |
|---|---|
| Patients | 643 |
| Total drug cost | $679,283 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | West Virginia University School of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Allegheny ClinicPittsburgh, PA · 2,389 clinicians
Hospital affiliations
- Ahn Wexford HospitalWexford, PA
- Allegheny General HospitalPittsburgh, PA
- Canonsburg General HospitalCanonsburg, PA
- Jefferson HospitalJefferson Hills, PA
- West Penn HospitalPittsburgh, PA
Industry payments (Open Payments)
- 2025$1,020 · 59 payments from 17 companies
- 2024$756.56 · 47 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $199.10 | 13 |
| Novartis Pharmaceuticals Corporation | $177.07 | 13 |
| Pfizer Inc. | $143.44 | 10 |
| Amgen Inc. | $68.48 | 3 |
| Heartflow, Inc. | $61.18 | 3 |
What the 2025 payments were for
- Food and Beverage$1,020 · 59 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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