Ryan Chang
NPI 1487457800 · Student in an Organized Health Care Education/Training Program · Saint Louis, MO
Enrolled with Medicare as Order and Referring Only - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Chang is a Student in an Organized Health Care Education/Training Program provider in Saint Louis, MO (NPI 1487457800).
Provider details
- NPI number
- 1487457800
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- 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
1 yr 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
- 2025-03-31
- Last updated
- 2026-06-02
- Certified
- 2026-06-02
Frequently asked questions
- What is Ryan Chang's NPI number?
- Ryan Chang's National Provider Identifier (NPI) is 1487457800, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Chang's specialty?
- Ryan 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 Ryan Chang located?
- Ryan Chang's practice location on file with NPPES is 1 Barnes Jew Hosp Plz, Saint Louis, MO 63110-1003.
- What is Ryan Chang's phone number?
- The practice phone number listed in the NPPES registry for Ryan Chang is (314) 362-9355.
- Does Ryan Chang accept Medicare?
- Ryan Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Chang's NPI active?
- Yes — Ryan Chang's NPI (1487457800) is active in the NPPES registry as of the last update on 2026-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.