Pauline Chang Yu, M.D.
Obstetrics & Gynecology Physician · Santa Clara, CA
Pauline Chang Yu, M.D. is an obstetrics & gynecology physician with a practice address in Santa Clara, California, and NPI 1588846133, issued on Dec 5, 2007. Check the license (California A104923, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Pauline Chang Yu
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A104923 CA
Self-reported in NPPES; status is on the state search - Practice location
- 710 Lawrence Expy Dept 390, Santa Clara, CA 95051
- Phone
- (408) 554-9820
- Enumerated
- Dec 5, 2007
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 710 Lawrence Expy Dept 390
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Adams-Piper, M.D.Obstetrics & Gynecology Physician1871878678
Verify Pauline Chang Yu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A104923Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
134 Medicare Part D claims for 76 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Estradiol35 claims
- Climara13 claims
- Estring13 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.
Pauline Chang Yu among 5,088 obstetrics & gynecology physician records in California
Pauline Chang Yu, 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 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% 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).
53 obstetrics & gynecology physician records list a practice address in Santa Clara
They are 53 of the 3,436 NPPES records with a practice address in Santa Clara, and 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Santa Clara → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Shiva Avari, MDSanta Clara, CA 950511295812121
- Neal Frager, MDSanta Clara, CA 950511538246483
- Faezeh Ghaffari, MDSanta Clara, CA 950511952488892
- Andrea Hutchinson, MDSanta Clara, CA 950511013094945
- David Levin, MDSanta Clara, CA 950511881771723
- Bernadette Macart, MDSanta Clara, CA 950511144307000
- Valerie Maloney, MDSanta Clara, CA 950511386722957
- Philip Miller, MDSanta Clara, CA 950511275610123
Common questions
What is Pauline Chang Yu, M.D.'s NPI number?
Pauline Chang Yu, M.D.'s National Provider Identifier (NPI) is 1588846133, issued on Dec 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Pauline Chang Yu, M.D. located?
The NPPES record lists a practice address at 710 Lawrence Expy Dept 390, Santa Clara, CA, 95051. Phone: (408) 554-9820. Providers update this record themselves, so call before visiting.
How can I verify Pauline Chang Yu, M.D.'s license?
NPPES lists California license number A104923, 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 Pauline Chang Yu, M.D. prescribe under Medicare Part D?
In 2024, Pauline Chang Yu, M.D. had 134 Medicare Part D claims for 76 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.