Quick answers
- Which hospitals does Frederick Greenstein work at?
- Medicare's official clinician data lists Frederick Greenstein at 1 hospital: Brookdale Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frederick Greenstein see patients?
- Medicare's clinician data lists 4 practice locations, including Brooklyn, NY. Call before your visit to confirm the address.
- What is Frederick Greenstein's specialty?
- Medicare lists Urology as the primary specialty.
- Does Frederick Greenstein accept Medicare assignment?
- Yes. Medicare's clinician data says Frederick Greenstein accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Frederick Greenstein?
- (718) 613-4000, as listed in official Medicare / NPI Registry data.
- What is Frederick Greenstein's NPI number?
- 1174583686. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frederick Greenstein works
Medicare's Facility Affiliation Data lists Frederick Greenstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Brookdale Hospital Medical CenterBrooklyn, NY · Acute Care Hospital · CCN 330233
Practice locations
Addresses where Frederick Greenstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Brookdale PlzBrooklyn, NY 11212
- 1545 Atlantic AveBrooklyn, NY 11213 (718) 613‑4000
- 2554 Linden BlvdBrooklyn, NY 11208 (718) 240‑5132
- Brookdale Hospital Medical CtrBrooklyn, NY 11212
Group practices
Medicare enrollment lists Frederick Greenstein as a member of these groups (CMS data updated 2026-10-02).
- Interfaith Professional Physician Services PC384 clinicians in the group
- Brookdale Family Care Center, Inc7 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Brooklyn
Clinicians with the same Medicare primary specialty in Brooklyn, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174583686 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians