NPPES file of Aug 9, 2026

Zhiyuh Chang, MD

Obstetrics & Gynecology Physician · Clovis, CA

Zhiyuh Chang, MD is an obstetrics & gynecology physician with a practice address in Clovis, California, and NPI 1134207046, issued on Nov 1, 2006. Check the license (California A91894, 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
1134207046
Name
Zhiyuh Chang
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A91894 CA
Self-reported in NPPES; status is on the state search
Practice location
2071 Herndon Ave, Clovis, CA 93611
Phone
(559) 324-5100
Enumerated
Nov 1, 2006
Record last updated
Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
00A918940 CA
Medicare enrollment
Enrolled (PECOS I20060309000484); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 2001
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 2071 Herndon Ave

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

  1. Shakeel Ahmad, DOFamily Medicine Physician1649844408
  2. Muhammad Akbar, MDSpinal Cord Injury Medicine Physician1235187766
  3. Kelly Ayala, MDObstetrics & Gynecology Physician1134421704
  4. Jennifer Bague, LCSWClinical Social Worker1407035108
  5. Diana BlumbergPharmacist1275064339
  6. Rhobe Brager, DOPediatrics Physician1780147694

Verify Zhiyuh Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A91894
    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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31% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024

216 Medicare Part D claims for 101 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Zhiyuh Chang216
  2. Specialty average165

Most prescribed

  1. Estradiol71 claims
  2. Trospium Chloride23 claims
  3. Clobetasol Propionate21 claims
  4. Climara14 claims
  5. Myrbetriq12 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. Permanente Medical Group IncClovis, CA

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

Zhiyuh Chang among 5,088 obstetrics & gynecology physician records in California

Zhiyuh Chang, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2001 · median 2004 among the 2,700 with a school on file
  • Record last updated2021 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in California

There are 5,088 obstetrics & gynecology physician records in California.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Dan Dorough, MDClovis, CA 936111417011289
  2. David Dorough, MDClovis, CA 936111144384918
  3. Roderick Harris, MDClovis, CA 936111780646018
  4. Asawari Khadye, MDClovis, CA 936111427122746
  5. Seung Nam Kim, M.D.Clovis, CA 936111134112154
  6. Lorenzo Lopez, MDClovis, CA 936111578566246
  7. Jill Mason, MDClovis, CA 936111033297841
  8. Gilbert Moran, M.D.Clovis, CA 936111891873709

Common questions

What is Zhiyuh Chang, MD's NPI number?

Zhiyuh Chang, MD's National Provider Identifier (NPI) is 1134207046, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Zhiyuh Chang, MD located?

The NPPES record lists a practice address at 2071 Herndon Ave, Clovis, CA, 93611. Phone: (559) 324-5100. Providers update this record themselves, so call before visiting.

How can I verify Zhiyuh Chang, MD's license?

NPPES lists California license number A91894, 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 Zhiyuh Chang, MD prescribe under Medicare Part D?

In 2024, Zhiyuh Chang, MD had 216 Medicare Part D claims for 101 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.

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.