Johanna Kate Halfon, MD
Obstetrics & Gynecology Physician · New York, NY
Johanna Kate Halfon, MD is an obstetrics & gynecology physician with a practice address in New York, New York, and NPI 1194045476, issued on Jun 9, 2010. Check the license (New York 269331-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Johanna Kate Halfon
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 269331-1 NY
2014-00511 NC
Self-reported in NPPES; status is on the state search - Practice location
- 161 Fort Washington Ave, New York, NY 10032
- Phone
- (212) 305-5515
- Enumerated
- Jun 9, 2010
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20170724001488); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 161 Fort Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maura Abbott, NP, PHDNurse Practitioner1881876415
- Alexey Abramov, M.D.Student in an Organized Health Care Education/Training Program1063874519
- Julian Abrams, M.D.Gastroenterology Physician1669494746
- Alex Addo, MDSurgery Physician1841685054
- Aradhna AgarwalRheumatology Physician1669009312
- Christopher Ahmad, MDOrthopaedic Surgery Physician1598795445
Verify Johanna Kate Halfon 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 269331-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
55 Medicare Part D claims for 27 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
- Estradiol11 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
- University Associates IN Obstetrics And Gynecology University FacultyStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johanna Kate Halfon among 3,174 obstetrics & gynecology physician records in New York
Johanna Kate Halfon, MD 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 2010, is newer than 68% of them.
- NPI issued2010 · 68% of these records are older, 30% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2010 · median 2002 among the 1,870 with a school on file
- Record last updated2022 · 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
- Janice Aubey, M.D.New York, NY 100321679592570
- Ana Cepin, M.D.New York, NY 100321265461115
- Katarina Eisinger, M.D.New York, NY 100321205865359
- Linda Fan, MDNew York, NY 100321467467324
- Dena Goffman, MDNew York, NY 100321699855155
- Robert Hadden, M.D.New York, NY 100321295767671
- Joshua Holden, M.D.New York, NY 100321720010994
- Sarah Kelly, M.D.New York, NY 100321821028697
Common questions
What is Johanna Kate Halfon, MD's NPI number?
Johanna Kate Halfon, MD's National Provider Identifier (NPI) is 1194045476, issued on Jun 9, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Johanna Kate Halfon, MD located?
The NPPES record lists a practice address at 161 Fort Washington Ave, New York, NY, 10032. Phone: (212) 305-5515. Providers update this record themselves, so call before visiting.
How can I verify Johanna Kate Halfon, MD's license?
NPPES lists New York license number 269331-1, 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 Johanna Kate Halfon, MD prescribe under Medicare Part D?
In 2024, Johanna Kate Halfon, MD had 55 Medicare Part D claims for 27 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.