RUEY-KANG R. CHANG M.D.
NPI 1427029677
Pediatrics - Pediatric Cardiology in Diamond Bar, CA

Q: What is Ruey-kang Chang's NPI number?

The NPI number for Ruey-kang Chang is 1427029677. It was assigned to this individual provider in the NPPES registry on January 27, 2006.

Q: What is Ruey-kang Chang's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Q: When was this NPI record last updated?

The NPPES record for Ruey-kang Chang was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 27, 2006PECOS Enrolled

1360 VALLEY VISTA DR, STE 203, DIAMOND BAR, CA 91765(310) 866-0709(310) 755-3108 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 13, 2026, Sep 16, 2021 (2 updates tracked since 2021).

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About Ruey-kang R. Chang M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RUEY-KANG R. CHANG M.D. (NPI 1427029677) is an individual pediatric cardiology provider in Diamond Bar, California, licensed in California (A53331) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427029677

Entity TypeIndividualMale

Primary Taxonomy2080P0202X

Provider Legal NameRUEY-KANG R. CHANGCredential: M.D.

Location Address1360 VALLEY VISTA DR, STE 203Diamond Bar, CA 91765-3953

Mailing Address1360 Valley Vista Dr, Ste 203Diamond Bar, CA 91765-3953 · (310) 866-0709 · Fax (310) 755-3108

Phone(310) 866-0709

Fax(310) 755-3108

Sole ProprietorNo

Enumeration DateJanuary 27, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 16, 2021

✔ NPI 1427029677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0202X

License✔ Licensed in CA · A53331

Definition

A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.

1360 VALLEY VISTA DR, Diamond Bar, CA 91765

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ruey-kang R. Chang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Ruey-kang Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Los Angeles

6.1 mi

Public Health, State or Local

750 S PARK AVE
Pomona, CA 91766

Reassigned Medicare billing, California enrollment
1,939 clinicians in this Medicare group

NPI 1649464496 (909) 868-0235

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ruey-kang Chang's NPI number?

The NPI number for Ruey-kang Chang is 1427029677. It was assigned to this individual provider in the NPPES registry on January 27, 2006.

Where is Ruey-kang Chang located?

Ruey-kang Chang practices at 1360 Valley Vista Dr Ste 203, Diamond Bar, CA 91765. The listed phone number is (310) 866-0709.

What is Ruey-kang Chang's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Ruey-kang Chang enrolled in Medicare?

Yes. Ruey-kang Chang is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Ruey-kang Chang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ruey-kang Chang reassigns Medicare benefits to County Of Los Angeles (Pomona, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ruey-kang Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ruey-kang Chang was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.