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ALFREDO LEE CHANG MD INC
NPI 1558990945
Internal Medicine - Critical Care Medicine in Monterey Park, CA

Active since April 07, 2020
500 N GARFIELD AVE STE 204, MONTEREY PARK, CA 91754(626) 280-4393(626) 280-5379 Get Directions Write a Review

NPPES record last updated: April 20, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 20, 2020, Apr 7, 2020 (2 updates tracked since 2020).

About Alfredo Lee Chang Md Inc NPPES

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

ALFREDO LEE CHANG MD INC (NPI 1558990945) is a healthcare organization registered as a critical care medicine in Monterey Park, California and active in the NPI registry since April 2020. The organization lists Alfredo Lee Chang, Owner, as its authorized official.

NPPES Registry Identity

NPI1558990945
Entity TypeOrganization
Primary Taxonomy207RC0200X
Legal Business NameALFREDO LEE CHANG MD INC
Location Address500 N GARFIELD AVE STE 204Monterey Park, CA 91754-1242
Mailing Address500 N Garfield Ave Ste 204Monterey Park, CA 91754-1242 · (626) 280-4393 · Fax (626) 280-5379
Phone(626) 280-4393
Fax(626) 280-5379
Organization SubpartNo
Authorized OfficialAlfredo Lee ChangOwner · (626) 280-4393
Enumeration DateApril 7, 2020
Last NPPES UpdateApril 20, 20202 updates tracked since enumeration
NPPES CertifiedApril 20, 2020
✔ NPI 1558990945 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X
500 N GARFIELD AVE STE 204, Monterey Park, CA 91754
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alfredo Lee Chang Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Alfredo Lee Chang MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Alfredo Lee Chang, MD
Pulmonary Disease
NPI 1689944407
1520 SAN PABLO STREET SUITE1000
Los Angeles, CA 90033
(323) 442-5100
✔ PECOS✔ Accepts Medicare4.5 mi

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 Alfredo Lee Chang MD Inc's NPI number?

The NPI number for Alfredo Lee Chang MD Inc is 1558990945. It was assigned to this organization in the NPPES registry on April 7, 2020.

Where is Alfredo Lee Chang MD Inc located?

Alfredo Lee Chang MD Inc is located at 500 N Garfield Ave Ste 204, Monterey Park, CA 91754. The listed phone number is (626) 280-4393.

What is Alfredo Lee Chang MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Alfredo Lee Chang MD Inc enrolled in Medicare?

Yes. Alfredo Lee Chang MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alfredo Lee Chang MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Pulmonary Disease) reassigns their Medicare billing to Alfredo Lee Chang MD Inc. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Alfredo Lee Chang MD Inc was last updated on April 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.