William Borenzweig
Obstetrics & Gynecology Physician · New York, NY
William Borenzweig is an obstetrics & gynecology physician with a practice address in New York, New York, and NPI 1487395026, issued on Apr 6, 2022. Check the license (New York 341274, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William Borenzweig
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 341274 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1000 10TH Ave, New York, NY 10019
- Phone
- (212) 523-4000
- Enumerated
- Apr 6, 2022
- Record last updated
- Jun 29, 2026
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 1000 10TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Borenzweig 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 341274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
22 Medicare Part D claims for 15 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
William Borenzweig among 3,174 obstetrics & gynecology physician records in New York
William Borenzweig 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 2022, is newer than 98% of them.
- NPI issued2022 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 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
- Wesley Blank, M.D.New York, NY 100191861493405
- Louise Chuu, M.D.New York, NY 100191811044001
- Barbara Deli, M.D.New York, NY 100191487655171
- Michelle Francis, M.D.New York, NY 100191801897442
- Azin Khanmohamadi, M.D.New York, NY 100191184712259
- Mindy Kwan, M.D., F.A.C.O.G.New York, NY 100191386708014
- Harry Lee, M.D.New York, NY 100191396746566
- Lisa Loehrke-Sichhart, DONew York, NY 100191366454688
Common questions
What is William Borenzweig's NPI number?
William Borenzweig's National Provider Identifier (NPI) is 1487395026, issued on Apr 6, 2022. An NPI identifies a provider in billing; it is not a license.
Where is William Borenzweig located?
The NPPES record lists a practice address at 1000 10TH Ave, New York, NY, 10019. Phone: (212) 523-4000. Providers update this record themselves, so call before visiting.
How can I verify William Borenzweig's license?
NPPES lists New York license number 341274, 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 William Borenzweig prescribe under Medicare Part D?
In 2024, William Borenzweig had 22 Medicare Part D claims for 15 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.