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William Chang, MD PHD
NPI 1679757629 · Nephrology Physician · New Haven, CT
William Chang, MD PHD is a Nephrology Physician provider in New Haven, CT (NPI 1679757629).
Provider details
- NPI number
- 1679757629
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 049303 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(88/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
Bb114 330 Cedar St
Yale Nephrology
New Haven, CT 06520
Phone: (203) 785-4184
Street-level locationGet directions
Mailing address
330 Cedar St
New Haven, CT 06510-3218
Registry dates
- Enumerated
- 2007-12-27
- Last updated
- 2013-06-12
Frequently asked questions
- What is William Chang's NPI number?
- William Chang's National Provider Identifier (NPI) is 1679757629, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chang's specialty?
- William Chang is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is William Chang located?
- William Chang's practice location on file with NPPES is Bb114 330 Cedar St, New Haven, CT 06520.
- What is William Chang's phone number?
- The practice phone number listed in the NPPES registry for William Chang is (203) 785-4184.
- Is William Chang's NPI active?
- Yes — William Chang's NPI (1679757629) is active in the NPPES registry as of the last update on 2013-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.