PATRICK CHANG MD
NPI 1750885307
Internal Medicine - Gastroenterology in Los Angeles, CA
About Patrick Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PATRICK CHANG MD (NPI 1750885307) is an individual gastroenterology provider in Los Angeles, California, licensed in California (A164305) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
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
Patrick 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 Patrick 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 90033
- Reassigned Medicare billing, California enrollment
- 2,445 clinicians in this Medicare group
Encinitas, CA 92024
- Reassigned Medicare billing, California enrollment
- 242 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.
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.
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 Patrick Chang's NPI number?
The NPI number for Patrick Chang is 1750885307. It was assigned to this individual provider in the NPPES registry on March 20, 2018.
Where is Patrick Chang located?
Patrick Chang practices at 1520 San Pablo Street Suite 1000, Los Angeles, CA 90033. The listed phone number is (323) 442-5100.
What is Patrick Chang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Patrick Chang enrolled in Medicare?
Yes. Patrick 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 Patrick Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Chang reassigns Medicare benefits to 2 organizations: Usc Care Medical Group, Inc (Los Angeles, CA) and Genesis Healthcare Partners PC (Encinitas, 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 Patrick 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 Patrick Chang was last updated on July 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Patrick Chang, MD · NPI 1750885307
Gastroenterology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 20, 2018.
## Identity
- **NPI:** 1750885307 (Entity type: Individual)
- **Enumerated:** March 20, 2018
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** A164305 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1520 SAN PABLO STREET SUITE 1000, Los Angeles, CA 90033-1029
- **Phone:** (323) 442-5100
## 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): Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA); Genesis Healthcare Partners PC (NPI 1548567498, Encinitas, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tulane University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** July 9, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1750885307) · Data from the CMS NPPES public registry.