DR. EMERY H CHANG MD
NPI 1649221383
Internal Medicine in Los Angeles, CA
About Dr. Emery H Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EMERY H CHANG MD (NPI 1649221383) is an individual internal medicine provider in Los Angeles, California, licensed in California (A91316) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Minnesota Medical School (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Emery H 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.
Medicare Billing Reassignments
2Medicare enrollment records show Emery Chang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 1,766 clinicians in this Medicare group
Tarzana, CA 91356
- Reassigned Medicare billing, California enrollment
- 93 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90035 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90035
LOS ANGELES, CA 90035
LOS ANGELES, CA 90035
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 Emery Chang's NPI number?
The NPI number for Emery Chang is 1649221383. It was assigned to this individual provider in the NPPES registry on May 15, 2006.
Where is Emery Chang located?
Emery Chang practices at 1399 Roxbury Dr Ste 100, Los Angeles, CA 90035. The listed phone number is (310) 557-2273.
What is Emery Chang's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Emery Chang enrolled in Medicare?
Yes. Emery 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.
Which organizations bill Medicare for Emery Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emery Chang reassigns Medicare benefits to 2 organizations: The Regents Of The University Of California (Los Angeles, CA) and Tarzana Treatment Centers, Inc. (Tarzana, CA). Each 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 Emery 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 Emery Chang was last updated on February 6, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Emery H Chang, MD · NPI 1649221383
Internal Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 15, 2006.
## Identity
- **NPI:** 1649221383 (Entity type: Individual)
- **Enumerated:** May 15, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A91316 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1399 ROXBURY DR, STE 100, Los Angeles, CA 90035-4709
- **Phone:** (310) 557-2273
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Regents Of The University Of California (NPI 1235107566, Los Angeles, CA); Tarzana Treatment Centers, Inc. (NPI 1467032599, Tarzana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2001
## Record status
- **NPPES last updated:** February 6, 2014
- **Other identifiers:** Medicare PIN BF178Z (CA); Medicare UPIN I45722
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Source: [NPI Profile](https://npiprofile.com/npi/1649221383) · Data from the CMS NPPES public registry.