ANDREW LUKE CHANG M.D.
NPI 1255513859
Radiology - Radiation Oncology in San Diego, CA
About Andrew Luke Chang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW LUKE CHANG M.D. (NPI 1255513859) is an individual radiation oncology provider in San Diego, California, licensed in California (85308) and active in the NPI registry since December 2007. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Andrew Luke Chang M.d. 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 Andrew Chang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92121
- Reassigned Medicare billing, California enrollment
- 20 clinicians in this Medicare group
Dededo, GU 96929
- Reassigned Medicare billing, Guam enrollment
- 432 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 92121 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92121
SAN DIEGO, CA 92121
SAN DIEGO, CA 92121
SAN DIEGO, CA 92121
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 Andrew Chang's NPI number?
The NPI number for Andrew Chang is 1255513859. It was assigned to this individual provider in the NPPES registry on December 5, 2007.
Where is Andrew Chang located?
Andrew Chang practices at 9730 Summers Ridge Rd, San Diego, CA 92121. The listed phone number is (858) 549-7400.
What is Andrew Chang's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Andrew Chang enrolled in Medicare?
Yes. Andrew 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 Andrew Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Chang reassigns Medicare benefits to 2 organizations: Proton Doctors Professional Corporation (San Diego, CA) and Guam Healthcare Development Incorporated (Dededo, GU). 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 Andrew 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 Andrew Chang was last updated on October 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.