RACHEL SI-WEN CHANG MD
NPI 1891435939
Internal Medicine in Los Angeles, CA
About Rachel Si-wen Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RACHEL SI-WEN CHANG MD (NPI 1891435939) is an individual internal medicine provider in Los Angeles, California, licensed in California (A187604) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of Vanderbilt University School Of Medicine (2022).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Rachel Si-wen Chang Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Rachel Chang's NPI number?
The NPI number for Rachel Chang is 1891435939. It was assigned to this individual provider in the NPPES registry on March 29, 2022.
Where is Rachel Chang located?
Rachel Chang practices at 1450 San Pablo St Ste 3000, Los Angeles, CA 90033. The listed phone number is (323) 442-8415.
What is Rachel Chang's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rachel Chang enrolled in Medicare?
Yes. Rachel Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Rachel Chang was last updated on September 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Rachel Si-Wen Chang, MD · NPI 1891435939
Internal Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 29, 2022.
## Identity
- **NPI:** 1891435939 (Entity type: Individual)
- **Enumerated:** March 29, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A187604 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1450 SAN PABLO ST STE 3000, Los Angeles, CA 90033-5332
- **Phone:** (323) 442-8415
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Vanderbilt University School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** September 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1891435939) · Data from the CMS NPPES public registry.