Michael Y. Greenley, MD
NPI 1952392813ActiveIndividual· Ophthalmology· Farmington Hills, MI
Ophthalmology (MD) in Farmington Hills, Michigan, trained at Wayne State University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $397,246 for 2,757 claims, against $176,067 paid for services in 2024. Oyster Point Pharma, Inc. was the largest of 11 companies reporting payments in 2025, $281.06 in all, mostly food and beverage.
Overview
| NPI | 1952392813 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 31, 2005 |
| Last updated in NPPES | Aug 21, 2023 |
| Certified by provider | Aug 21, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 4301045964 | 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 - Ophthalmology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 680 |
|---|---|
| Services billed | 3,144 across 41 procedure codes |
| Paid by Medicare | $176,067 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,757 · 4,453 30-day fills |
|---|---|
| Patients | 649 |
| Total drug cost | $397,246 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Ophthalmology |
Medical group
- Porretta and Bergman MD, PCWest Bloomfield, MI · 4 clinicians
Industry payments (Open Payments)
- 2025$281.06 · 14 payments from 11 companies
- 2024$68.48 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Oyster Point Pharma, Inc. | $62.48 | 3 |
| Dompe US, Inc. | $34.61 | 2 |
| Abbvie Inc. | $30.71 | 1 |
| Tarsus Pharmaceuticals, Inc. | $28.30 | 1 |
| Thea Pharma Inc. | $21.46 | 1 |
What the 2025 payments were for
- Food and Beverage$281.06 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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