Thomas Chang
NPI 1780439984 · Student in an Organized Health Care Education/Training Program · New Haven, CT
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Chang is a Student in an Organized Health Care Education/Training Program provider in New Haven, CT (NPI 1780439984).
Provider details
- NPI number
- 1780439984
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2024-04-22
- Last updated
- 2024-04-22
- Certified
- 2024-04-21
Frequently asked questions
- What is Thomas Chang's NPI number?
- Thomas Chang's National Provider Identifier (NPI) is 1780439984, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Chang's specialty?
- Thomas Chang is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Thomas Chang located?
- Thomas Chang's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Thomas Chang's phone number?
- The practice phone number listed in the NPPES registry for Thomas Chang is (203) 688-4242.
- Does Thomas Chang accept Medicare?
- Thomas Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Chang's NPI active?
- Yes — Thomas Chang's NPI (1780439984) is active in the NPPES registry as of the last update on 2024-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.