NPPES file of Aug 9, 2026

Yi Zhang, M.D.

Emergency Medicine Physician · Rancho Cucamonga, CA

Yi Zhang, M.D. is an emergency medicine physician with a practice address in Rancho Cucamonga, California, and NPI 1164466322, issued on Jun 16, 2006. Check the license (California A61239, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164466322
Name
Yi Zhang
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A61239 CA
Self-reported in NPPES; status is on the state search
Practice location
6417 Haven Ave Ste 110, Rancho Cucamonga, CA 91737
Phone
(909) 941-2273
Enumerated
Jun 16, 2006
Record last updated
Oct 18, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(909) 477-8830
Medicaid ID
00A612390 CA
Medicare enrollment
Enrolled (PECOS I20040708001361); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 6417 Haven Ave Ste 110

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Henry Cho, MDFamily Medicine Physician1710484746
  2. Nadine Cosico, PA-CPhysician Assistant1992811749
  3. Brian Im, PAPhysician Assistant1700186491
  4. Truongson Nguyen, D.O.Family Medicine Physician1629517792

Verify Yi Zhang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A61239    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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50% more Medicare Part D claims than the average emergency medicine physician in 2024

339 Medicare Part D claims for 197 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Yi Zhang339
  2. Specialty average226

Most prescribed

  1. Prednisone49 claims
  2. Azithromycin43 claims
  3. Amoxicillin-Clavulanate Potass28 claims
  4. Doxycycline Hyclate25 claims
  5. Albuterol Sulfate Hfa17 claims
  6. Ibuprofen17 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Haven Elite Urgent CareRancho Cucamonga, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

All 7,751 in California → Every provider in Rancho Cucamonga →

Other emergency medicine physician records in California

  1. Cooper Aakhus, MDStanford, CA1194351007
  2. Pyra Aarden, MDMartinez, CA1417058199
  3. Neal Aaron, D.O.Encinitas, CA1114283520
  4. Eric AaserudeWalnut Creek, CA1811491194
  5. Nader Abas, MDBarstow, CA1346288305
  6. Michael Abbo, MDNovato, CA1205819042
  7. Daniel Abbott, MDFullerton, CA1518907864
  8. Paul-Andre Abboud, M.D.Oakland, CA1710065503
  9. Mostafa Abdel-Hamid, MDStanford, CA1457918740
  10. Ashraf Abdel-KerimChino, CA1396961538

Common questions

What is Yi Zhang, M.D.'s NPI number?

Yi Zhang, M.D.'s National Provider Identifier (NPI) is 1164466322, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Yi Zhang, M.D. located?

The NPPES record lists a practice address at 6417 Haven Ave Ste 110, Rancho Cucamonga, CA, 91737. Phone: (909) 941-2273. Providers update this record themselves, so call before visiting.

How can I verify Yi Zhang, M.D.'s license?

NPPES lists California license number A61239, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Yi Zhang, M.D. prescribe under Medicare Part D?

In 2024, Yi Zhang, M.D. had 339 Medicare Part D claims for 197 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.