DR. YI ZHANG M.D.
NPI 1164466322
Emergency Medicine in Rancho Cucamonga, CA
About Dr. Yi Zhang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. YI ZHANG M.D. (NPI 1164466322) is an individual emergency medicine provider in Rancho Cucamonga, California, licensed in California (A61239) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1995).
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
Dr. Yi Zhang 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 Reassignment
Medicare enrollment records show Yi Zhang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rancho Cucamonga, CA 91737
- Reassigned Medicare billing, California enrollment
- 9 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 16
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 91737 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.
RANCHO CUCAMONGA, CA 91737
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 Yi Zhang's NPI number?
The NPI number for Yi Zhang is 1164466322. It was assigned to this individual provider in the NPPES registry on June 16, 2006.
Where is Yi Zhang located?
Yi Zhang practices at 6417 Haven Ave Ste 110, Rancho Cucamonga, CA 91737. The listed phone number is (909) 941-2273.
What is Yi Zhang's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Yi Zhang enrolled in Medicare?
Yes. Yi 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 organization bills Medicare for Yi Zhang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Yi Zhang reassigns Medicare benefits to Haven Elite Urgent Care (Rancho Cucamonga, CA). The 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 Yi 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 Yi Zhang was last updated on October 18, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.