Wanchi Zeng, M.D.
Obstetrics Physician · West Covina, CA
Wanchi Zeng, M.D. is an obstetrics physician with a practice address in West Covina, California, and NPI 1578948279, issued on Jul 22, 2015. Check the license (California A150509, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wanchi Zeng
- Credential
- M.D.
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License number
- A150509 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1135 S Sunset Ave Ste 408, West Covina, CA 91790
- Phone
- (626) 593-5129
- Enumerated
- Jul 22, 2015
- Record last updated
- Apr 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics physician records → All 174 in California → Look up another NPI →
Also registered at 1135 S Sunset Ave Ste 408
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zaid Chaudhry, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1740509728
Verify Wanchi Zeng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A150509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average obstetrics physician in 2024
20 Medicare Part D claims, against an average of 218 among the 863 providers of this specialty who prescribed in Part D.
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Wanchi Zeng among 174 obstetrics physician records in California
Wanchi Zeng, M.D. is one of 174 obstetrics physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 82% of them.
- NPI issued2015 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2019 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics Physician providers in California
There are 174 obstetrics physician records in California.
All 174 in California → Every provider in West Covina → Obstetrics Physician nationwide →
The 8 obstetrics physician records with the nearest ZIP codes
- Franklin Johnson, D.O.Upland, CA 917861780632299
- Serena Mathews, M.D.Alhambra, CA 918011659803484
- Vinh Vo, DORosemead, CA 917701932365962
- Robert Lee, D.O.Pomona, CA 917671871652859
- Maggie Pham, D.O.Pomona, CA 917671073907044
- Kamaya Killebrew, PA-CChino, CA 917101659217586
- James Schaefer, MDLa Mesa, CA 919421376645267
- Michael Thesing, MDNational City, CA 919501821084294
Common questions
What is Wanchi Zeng, M.D.'s NPI number?
Wanchi Zeng, M.D.'s National Provider Identifier (NPI) is 1578948279, issued on Jul 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Wanchi Zeng, M.D. located?
The NPPES record lists a practice address at 1135 S Sunset Ave Ste 408, West Covina, CA, 91790. Phone: (626) 593-5129. Providers update this record themselves, so call before visiting.
How can I verify Wanchi Zeng, M.D.'s license?
NPPES lists California license number A150509, 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 Wanchi Zeng, M.D. prescribe under Medicare Part D?
In 2024, Wanchi Zeng, M.D. had 20 Medicare Part D claims; the average among obstetrics physician prescribers was 218. Part D covers Medicare prescriptions only.
What is Wanchi Zeng, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.