John Koulos, M.D.,
Obstetrics & Gynecology Physician · New York, NY
John Koulos, M.D., is an obstetrics & gynecology physician with a practice address in New York, New York, and NPI 1760408512, issued on Jul 14, 2006. Check the license (New York 174018, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Koulos
- Credential
- M.D.,
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 174018 NY
Self-reported in NPPES; status is on the state search - Practice location
- 10 Union SQ E, New York, NY 10003
- Phone
- (212) 256-3539
- Enumerated
- Jul 14, 2006
- Record last updated
- Jun 10, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040814000155); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1978
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 10 Union SQ E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frida Abramov, PAPhysician Assistant1083833636
- Christine Akoh, MD, PHDDermatology Physician1487238184
- Akash Alexander, PHARM.D., BCPS, CDEAmbulatory Care Pharmacist1497921506
- Shavon Alexander, MS, RDN, CDNRegistered Dietitian1396681847
- Julia Alishayev, PA-CPhysician Assistant1710394358
- Richard Amerling, MDInternal Medicine Physician1437130317
Verify John Koulos 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 174018Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
84 Medicare Part D claims for 24 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Premarin14 claims
- Estradiol13 claims
- Medroxyprogesterone Acetate13 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.
Bills Medicare through one group practice
- Physician Affiliate Group OF New York PCBronx, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Koulos among 3,174 obstetrics & gynecology physician records in New York
John Koulos, M.D., is one of 3,174 obstetrics & gynecology physician records with a practice address in New York. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 49% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1978 · median 2002 among the 1,870 with a school on file
- Record last updated2014 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in New York
There are 3,174 obstetrics & gynecology physician records in New York.
All 3,174 in New York → Every provider in New York → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Peter Chang, MDNew York, NY 100031952382376
- Arnold Friedman, MDNew York, NY 100031033190459
- Marguerita Gonzales, MDNew York, NY 100031871574756
- Jacqueline Lewis, CNMNew York, NY 100031962483388
- Valerie Lewis-Morris, MDNew York, NY 100031770564668
- Rachel Masch, M.D.New York, NY 100031598750515
- Ximena Matamala, M.D.,New York, NY 100031043323652
- Teresa Perretta, MDNew York, NY 100031356322242
Common questions
What is John Koulos, M.D.,'s NPI number?
John Koulos, M.D.,'s National Provider Identifier (NPI) is 1760408512, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Koulos, M.D., located?
The NPPES record lists a practice address at 10 Union SQ E, New York, NY, 10003. Phone: (212) 256-3539. Providers update this record themselves, so call before visiting.
How can I verify John Koulos, M.D.,'s license?
NPPES lists New York license number 174018, 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 John Koulos, M.D., prescribe under Medicare Part D?
In 2024, John Koulos, M.D., had 84 Medicare Part D claims for 24 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
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.