Chang Su, MD
NPI 1639753650 · 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)
Chang Su, MD is a Student in an Organized Health Care Education/Training Program provider in New Haven, CT (NPI 1639753650).
Provider details
- NPI number
- 1639753650
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- 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 tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$32 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-05-06
- Last updated
- 2021-05-06
- Certified
- 2021-05-06
Frequently asked questions
- What is Chang Su's NPI number?
- Chang Su's National Provider Identifier (NPI) is 1639753650, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chang Su's specialty?
- Chang Su 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 Chang Su located?
- Chang Su's practice location on file with NPPES is 20 York St, New Haven, CT 06510-3220.
- What is Chang Su's phone number?
- The practice phone number listed in the NPPES registry for Chang Su is (203) 688-4242.
- Does Chang Su accept Medicare?
- Chang Su is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chang Su's NPI active?
- Yes — Chang Su's NPI (1639753650) is active in the NPPES registry as of the last update on 2021-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.