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Physician Profile

Frederick Greenstein, M.D.

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At a glance

About Dr. Greenstein

Based in Brooklyn, NY, Frederick Greenstein, M.D. is listed in the NPI registry under urology. Frederick graduated from State University of New York Downstate Medical Center in 1977. According to Medicare claims data, Frederick cared for 257 Medicare patients across 335 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1174583686 identifies this record in the national registry.

Factual summary compiled by Guide.md from public records; not written by this provider.

Specialty

Urology (Primary)

Credentials & Licensing

NY licenceAs reported to the NPI registry
No. 134704As reported
NPINational Provider Identifier
1174583686Issued 2006

As reported to the NPI registry ↗

Medicare information

Accepts Medicare assignmentYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What does Frederick Greenstein specialize in?

Frederick Greenstein is an urologist in Brooklyn, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Urology”.

NPI registry

Where is Frederick Greenstein located?

Frederick Greenstein is listed at One Brookdale Plaza Men's Health - Suite 500, Brooklyn, NY 11212. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Frederick Greenstein's phone number?

The number on file is (718) 240-8672. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Frederick Greenstein's NPI number?

Frederick Greenstein's National Provider Identifier is 1174583686. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Where did Frederick Greenstein train?

Frederick Greenstein attended State University of New York Downstate Medical Center, graduating in 1977. This comes from the CMS National Downloadable File.

CMS public data

How long has Frederick Greenstein been practicing?

Frederick Greenstein has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.

CMS public data

What does Frederick Greenstein do most often?

According to Medicare billing data, Frederick Greenstein performs procedures including diagnostic exam of bladder and urethra using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Has Frederick Greenstein confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Frederick Greenstein. If this is you, claiming it is free.

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