Peter Gregos
Hematology & Oncology Physician · Brooklyn, NY
Peter Gregos is a hematology & oncology physician with a practice address in Brooklyn, New York, and NPI 1447670773, issued on Apr 25, 2014. Check the license (New York 305725, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Peter Gregos
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 305725 NY
Self-reported in NPPES; status is on the state search - Practice location
- 506 6TH St, Brooklyn, NY 11215
- Phone
- (347) 694-5035
- Enumerated
- Apr 25, 2014
- Record last updated
- Feb 12, 2025
- Fax
- (718) 855-4396
- Medicare enrollment
- Enrolled (PECOS I20200917000557); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,163 in New York → Look up another NPI →
Also registered at 506 6TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Abadi, MDPediatrics Physician1003298993
- Haley Abbott, DDSStudent in an Organized Health Care Education/Training Program1568313161
- Jacob Abraham, MDStudent in an Organized Health Care Education/Training Program1043009665
- Maria Abraham, M.D.Pediatrics Physician1184039463
- Alexander Abramov, PA-CPhysician Assistant1487339511
- Eric Abrams, M.D.Emergency Medicine Physician1851737340
Verify Peter Gregos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 305725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
484 Medicare Part D claims for 84 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims. 20 claims were for opioids.
Most prescribed
- Abiraterone Acetate133 claims
- Prednisone94 claims
- Eliquis43 claims
- Orgovyx33 claims
- Xtandi31 claims
- Ondansetron Hcl27 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Kings Physician Services PCBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Gregos among 1,163 hematology & oncology physician records in New York
Peter Gregos is one of 1,163 hematology & oncology physician records with a practice address in New York. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 78% of them.
- NPI issued2014 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2013 · median 2002 among the 833 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in New York
There are 1,163 hematology & oncology physician records in New York.
All 1,163 in New York → Every provider in Brooklyn → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Alan Astrow, MDBrooklyn, NY 112151649384371
- Alexander Bershadskiy, M.D.Brooklyn, NY 112151407016116
- Frank Colella, MDBrooklyn, NY 112151023060944
- Perry Cook, M.D.Brooklyn, NY 112151336140581
- Alan Dosik, MDBrooklyn, NY 112151528010386
- Mendel Goldfinger, M.D.Brooklyn, NY 112151801174792
- Andy Huang, MDBrooklyn, NY 112151134150915
- Uqba Khan, M.D.Brooklyn, NY 112151780923920
Common questions
What is Peter Gregos's NPI number?
Peter Gregos's National Provider Identifier (NPI) is 1447670773, issued on Apr 25, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Peter Gregos located?
The NPPES record lists a practice address at 506 6TH St, Brooklyn, NY, 11215. Phone: (347) 694-5035. Providers update this record themselves, so call before visiting.
How can I verify Peter Gregos's license?
NPPES lists New York license number 305725, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter Gregos prescribe under Medicare Part D?
In 2024, Peter Gregos had 484 Medicare Part D claims for 84 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Peter Gregos's MIPS final score?
The 2023 MIPS final score is 90.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.