Ruey-Kang Chang, M.D.
NPI 1427029677 · Pediatric Cardiology Physician · Diamond Bar, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruey-Kang Chang, M.D. is a Pediatric Cardiology Physician provider in Diamond Bar, CA (NPI 1427029677).
Provider details
- NPI number
- 1427029677
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- A53331 (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
20 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
- 2006-01-27
- Last updated
- 2021-09-16
- Certified
- 2021-09-16
Frequently asked questions
- What is Ruey-Kang Chang's NPI number?
- Ruey-Kang Chang's National Provider Identifier (NPI) is 1427029677, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruey-Kang Chang's specialty?
- Ruey-Kang Chang is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ruey-Kang Chang located?
- Ruey-Kang Chang's practice location on file with NPPES is 1360 Valley Vista Dr, Diamond Bar, CA 91765-3953.
- What is Ruey-Kang Chang's phone number?
- The practice phone number listed in the NPPES registry for Ruey-Kang Chang is (310) 866-0709.
- Does Ruey-Kang Chang accept Medicare?
- Ruey-Kang Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruey-Kang Chang's NPI active?
- Yes — Ruey-Kang Chang's NPI (1427029677) is active in the NPPES registry as of the last update on 2021-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.