Marc J. Greenberger, M.D.
NPI 1831145747ActiveIndividual· Internal Medicine, Pulmonary Disease· Royal Oak, MI
Internal Medicine, Pulmonary Disease (M.D.) in Royal Oak, Michigan, trained at University of Michigan Medical School (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $1,634,097 for 2,326 claims, against $145,408 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 23 companies reporting payments in 2025, $2,961 in all, mostly food and beverage.
Overview
| NPI | 1831145747 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 25, 2006 |
| Last updated in NPPES | Sep 12, 2024 |
| Certified by provider | Sep 12, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 430162321 | MI |
| Internal Medicine, Sleep Medicine | 207RS0012X | 4301062321 | MI |
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 - Pulmonary Disease (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 578 |
|---|---|
| Services billed | 2,370 across 24 procedure codes |
| Paid by Medicare | $145,408 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,326 · 3,723 30-day fills |
|---|---|
| Patients | 369 |
| Total drug cost | $1,634,097 |
| Generic share | 46% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Medical group
- Greenberger Wu Dunn and Fields PLLCRoyal Oak, MI · 4 clinicians
Hospital affiliations
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
- Beaumont Hospital, TroyTroy, MI
Industry payments (Open Payments)
- 2025$2,961 · 166 payments from 23 companies
- 2024$1,885 · 90 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $421.02 | 23 |
| Glaxosmithkline, LLC. | $406.61 | 27 |
| Verona Pharma, Inc. | $353.60 | 23 |
| Regeneron Healthcare Solutions, Inc. | $175.18 | 9 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $164.31 | 9 |
What the 2025 payments were for
- Food and Beverage$2,961 · 166 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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