Winnie Wing-Shan Cheung, M.D.
Obstetrics & Gynecology Physician · Union City, CA
Winnie Wing-Shan Cheung, M.D. is an obstetrics & gynecology physician with a practice address in Union City, California, and NPI 1124107271, issued on Nov 2, 2006. Check the license (California A80502, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Winnie Wing-Shan Cheung
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A80502 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3553 Whipple RD, Union City, CA 94587
- Phone
- (510) 454-1000
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A805020 CA
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3553 Whipple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Winnie Wing-Shan Cheung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A80502Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
159 Medicare Part D claims for 86 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol72 claims
- Clobetasol Propionate16 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.
Winnie Wing-Shan Cheung among 5,088 obstetrics & gynecology physician records in California
Winnie Wing-Shan Cheung, M.D. 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 fileNo · 53% of these records are
- 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).
13 obstetrics & gynecology physician records list a practice address in Union City
They are 13 of the 1,006 NPPES records with a practice address in Union City, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Union City → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Joseph Bachicha, M.D.Union City, CA 945871023180775
- Bennie Brown, MDUnion City, CA 945871750379509
- Charlotte Burke, M.D.Union City, CA 945871932387727
- Harita DevireddyUnion City, CA 945871831480177
- Jennifer Isaacs, M.D.Union City, CA 945871972653798
- Mark Jacobs, M.D.San Leandro, CA 945871679533186
- Abigail Justiss, MDUnion City, CA 945871144664624
- Wan Kim, M.D.Union City, CA 945871235218926
Common questions
What is Winnie Wing-Shan Cheung, M.D.'s NPI number?
Winnie Wing-Shan Cheung, M.D.'s National Provider Identifier (NPI) is 1124107271, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winnie Wing-Shan Cheung, M.D. located?
The NPPES record lists a practice address at 3553 Whipple RD, Union City, CA, 94587. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Winnie Wing-Shan Cheung, M.D.'s license?
NPPES lists California license number A80502, 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 Winnie Wing-Shan Cheung, M.D. prescribe under Medicare Part D?
In 2024, Winnie Wing-Shan Cheung, M.D. had 159 Medicare Part D claims for 86 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.