DR. LY ZHANG MD
NPI 1902433139
Anesthesiology in Orange, CA
About Dr. Ly Zhang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LY ZHANG MD (NPI 1902433139) is an individual anesthesiology provider in Orange, California, licensed in California (A202900) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Downey, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Dr. Ly Zhang 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 Ly Zhang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 420 clinicians in this Medicare group
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- 13,921 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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
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 Ly Zhang's NPI number?
The NPI number for Ly Zhang is 1902433139. It was assigned to this individual provider in the NPPES registry on March 26, 2020.
Where is Ly Zhang located?
Ly Zhang practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-5501.
What is Ly Zhang's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ly Zhang enrolled in Medicare?
Yes. Ly Zhang 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 Ly Zhang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ly Zhang reassigns Medicare benefits to 2 organizations: Regents Of The University Of (Orange, CA) and Southern California Permanente Medical Group (Anaheim, 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 Ly Zhang'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 Ly Zhang was last updated on August 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Ly Zhang, MD · NPI 1902433139
Anesthesiology physician in Orange, California. Individual provider, active in the CMS NPPES registry since March 26, 2020.
## Identity
- **NPI:** 1902433139 (Entity type: Individual)
- **Enumerated:** March 26, 2020
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A202900 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-5501
## 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): Regents Of The University Of (NPI 1487602546, Orange, CA); Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** August 27, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1902433139) · Data from the CMS NPPES public registry.