Frederick Greenstein, M.D.
NPI 1174583686ActiveIndividual· Urology· Brooklyn, NY
Urology (M.D.) in Brooklyn, New York, trained at State University of New York Downstate Medical Center (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $1,276,177 for 2,181 claims, against $25,514 paid for services in 2024. Astellas Pharma US Inc was the largest of 3 companies reporting payments in 2025, $318.32 in all, mostly education.
Overview
| NPI | 1174583686 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 27, 2006 |
| Last updated in NPPES | May 18, 2020 |
| Certified by provider | May 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 134704 | NY |
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 - Urology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 219 |
|---|---|
| Services billed | 437 across 26 procedure codes |
| Paid by Medicare | $25,514 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,181 · 4,262 30-day fills |
|---|---|
| Patients | 522 |
| Total drug cost | $1,276,177 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Urology |
Medical groups
- Interfaith Professional Physician Services PCBrooklyn, NY · 384 clinicians
- Brookdale Family Care Center, IncBrooklyn, NY · 7 clinicians
Hospital affiliation
- Brookdale Hospital Medical CenterBrooklyn, NY
Industry payments (Open Payments)
- 2025$318.32 · 8 payments from 3 companies
- 2024$124.29 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $201.80 | 3 |
| Sumitomo Pharma America, Inc. | $67.91 | 3 |
| Pfizer Inc. | $48.61 | 2 |
What the 2025 payments were for
- Education$184.05 · 2 payments
- Food and Beverage$134.27 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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