Isabel S. Blumberg, M.D.
Obstetrics & Gynecology Physician · New York, NY
Isabel S. Blumberg, M.D. is an obstetrics & gynecology physician with a practice address in New York, New York, and NPI 1821183989, issued on Oct 4, 2006. Check the license (New York 216565, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Isabel S. Blumberg
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 216565 NY
2165651 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1125 Park Ave, New York, NY 10128
- Phone
- (917) 492-9200
- Enumerated
- Oct 4, 2006
- Record last updated
- Oct 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (917) 492-8129
- Medicare enrollment
- Enrolled (PECOS I20051215000225); may accept Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1998
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 1125 Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebecca Amaru, M.D.Obstetrics & Gynecology Physician1093785305
- Bradley Bloom, M.D.Dermatology Physician1780902585
- Shari Brasner, M.D.Obstetrics & Gynecology Physician1750495842
- Stephanie Freilich, M.D.Pediatrics Physician1851316269
- Melissa Goldstein, M.DPediatrics Physician1649347790
- Howard Greenberg, M.D.Hematology & Oncology Physician1104847508
Verify Isabel S. Blumberg 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 216565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
68 Medicare Part D claims for 18 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Zolpidem Tartrate12 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.
Industry payments in 2024: $107.37
4 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Isabel S. Blumberg among 3,174 obstetrics & gynecology physician records in New York
Isabel S. Blumberg, 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
- Graduated1998 · median 2002 among the 1,870 with a school on file
- Record last updated2015 · 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
- Rebecca Amaru, M.D.New York, NY 101281093785305
- Jay Bauman, M.D.New York, NY 101281780606939
- Samuel Bender, MDNew York, NY 101281134159726
- Shari Brasner, M.D.New York, NY 101281750495842
- Hsiang Chen, M.D.New York, NY 101281528038908
- Caitlin Goldsmith, M.D.,F.A.C.O.GNew York, NY 101281285687343
- Laurie Goldstein, MDNew York, NY 101281962410068
- Victor Grazi, M.D.New York, NY 101281992819031
Common questions
What is Isabel S. Blumberg, M.D.'s NPI number?
Isabel S. Blumberg, M.D.'s National Provider Identifier (NPI) is 1821183989, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Isabel S. Blumberg, M.D. located?
The NPPES record lists a practice address at 1125 Park Ave, New York, NY, 10128. Phone: (917) 492-9200. Providers update this record themselves, so call before visiting.
How can I verify Isabel S. Blumberg, M.D.'s license?
NPPES lists New York license number 216565, 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 Isabel S. Blumberg, M.D. prescribe under Medicare Part D?
In 2024, Isabel S. Blumberg, M.D. had 68 Medicare Part D claims for 18 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.