Yifan Chang, MD
Obstetrics & Gynecology Physician · New Haven, CT
Yifan Chang, MD is an obstetrics & gynecology physician with a practice address in New Haven, Connecticut, and NPI 1427632520, issued on May 6, 2021. Check the license on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Yifan Chang
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A202439 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St, New Haven, CT 06510
- Phone
- (203) 688-4242
- Enumerated
- May 6, 2021
- Record last updated
- Sep 9, 2025
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
Also registered at 20 York St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cyrena Abbasi, MDStudent in an Organized Health Care Education/Training Program1609703289
- Ali Abboud, MD, MBAStudent in an Organized Health Care Education/Training Program1942943097
- Basil Abdalla, MDStudent in an Organized Health Care Education/Training Program1154905057
- Jasmina AbdallaStudent in an Organized Health Care Education/Training Program1700638590
- Sarah AbdallahPsychiatry Physician1740800952
- Usama Abdelghany, PHARM DOncology Pharmacist1548827843
Verify Yifan Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
28 Medicare Part D claims for 13 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Yifan Chang among 707 obstetrics & gynecology physician records in Connecticut
Yifan Chang, MD is one of 707 obstetrics & gynecology physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 94% of them.
- NPI issued2021 · 94% of these records are older, 2% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2025 · 65% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 obstetrics & gynecology physician records list a practice address in New Haven
They are 86 of the 9,793 NPPES records with a practice address in New Haven, and 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in New Haven → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Margaret Baumbusch, MD, FACOGNew Haven, CT 065101225336134
- Steven Fleischman, M.D.New Haven, CT 065101265495790
- Thomas Hanson, M.D., FACOSNew Haven, CT 065101063475184
- Tessa Madden, MDNew Haven, CT 065101104861665
- Urania Magriples, MDNew Haven, CT 065101740263813
- Dennis Mauricio, MDNew Haven, CT 065101063675056
- Megan McCarthy, M.D.New Haven, CT 065101215228259
- Leanne McCloskey, M.D., M.P.H.New Haven, CT 065101700115029
Common questions
What is Yifan Chang, MD's NPI number?
Yifan Chang, MD's National Provider Identifier (NPI) is 1427632520, issued on May 6, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Yifan Chang, MD located?
The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (203) 688-4242. Providers update this record themselves, so call before visiting.
How can I verify Yifan Chang, MD's license?
Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Yifan Chang, MD prescribe under Medicare Part D?
In 2024, Yifan Chang, MD had 28 Medicare Part D claims for 13 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.