John Michael Clark, D.O.
NPI 1831484138ActiveIndividual· Internal Medicine, Advanced Heart Failure and Transplant Cardiology· Wynnewood, PA
Internal Medicine, Advanced Heart Failure and Transplant Cardiology (D.O.) in Wynnewood, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $7,388,465 for 3,670 claims, against $143,167 paid for services in 2024. Medline Industries LP was the largest of 2 companies reporting payments in 2025, $37.39 in all, mostly food and beverage.
Overview
| NPI | 1831484138 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 14, 2011 |
| Last updated in NPPES | Oct 17, 2024 |
| Certified by provider | Oct 17, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology Primary | 207RA0001X | OS019297 | PA |
| Internal Medicine | 207R00000X | OS019297 | PA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | OS019297 | 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 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 - Cardiovascular Disease (Cardiology) (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 439 |
|---|---|
| Services billed | 1,811 across 35 procedure codes |
| Paid by Medicare | $143,167 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,670 · 7,953 30-day fills |
|---|---|
| Patients | 385 |
| Total drug cost | $7,388,465 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Advanced Heart Failure And Transplant Cardiology |
| Telehealth | Offers telehealth |
Medical group
- Main Line HealthcareWynewood, PA · 1,184 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Main Line Hospital LankenauWynnewood, PA
- Paoli HospitalPaoli, PA
- Riddle Memorial HospitalMedia, PA
Industry payments (Open Payments)
- 2025$37.39 · 2 payments from 2 companies
- 2024$124.48 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medline Industries LP | $22.75 | 1 |
| Amgen Inc. | $14.64 | 1 |
What the 2025 payments were for
- Food and Beverage$37.39 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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