Physician Profile
Unclaimed ProfileAbout 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.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Greenstein specialise in?
Dr. Greenstein is an urology in Brooklyn, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “UROLOGY”.
NPI registry
Where is Dr. Greenstein located?
Dr. 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 Dr. Greenstein's phone number?
The number on file is (718) 240-8672. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Greenstein's NPI number?
Dr. 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 Dr. Greenstein go to medical school?
Dr. 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 Dr. Greenstein been practising?
Dr. Greenstein has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Greenstein do most often?
According to Medicare billing data, Dr. 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 Dr. Greenstein confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Greenstein. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (718) 240-8672
- Email not available
Practice Locations
ONE BROOKDALE PLAZA MEN'S HEALTH - SUITE 500
Brooklyn, NY 11212
Procedures Most Often Billed to Medicare
335 services · 257 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
16 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
182 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
47 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
34 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
19 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
19 |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other urology specialists in Brooklyn 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at State University of New York Downstate Medical Center 8
Other providers in the same specialty who trained at the same institution.
Class of 1977 at State University of New York Downstate Medical Center 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of bladder and urethra using an endoscope 8
Providers in NY who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.