Yifan Chang, MD
NPI 1427632520 · Obstetrics & Gynecology Physician · New Haven, CT
Enrolled with Medicare as Order and Referring Only - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yifan Chang, MD is a Obstetrics & Gynecology Physician provider in New Haven, CT (NPI 1427632520).
Provider details
- NPI number
- 1427632520
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A202439 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-05-06
- Last updated
- 2025-09-09
- Certified
- 2025-09-09
Frequently asked questions
- What is Yifan Chang's NPI number?
- Yifan Chang's National Provider Identifier (NPI) is 1427632520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yifan Chang's specialty?
- Yifan Chang is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Yifan Chang located?
- Yifan Chang's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Yifan Chang's phone number?
- The practice phone number listed in the NPPES registry for Yifan Chang is (203) 688-4242.
- Does Yifan Chang accept Medicare?
- Yifan Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yifan Chang's NPI active?
- Yes — Yifan Chang's NPI (1427632520) is active in the NPPES registry as of the last update on 2025-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.