Sai-Wing Chan, MD
Obstetrics & Gynecology Physician · Santa Clara, CA
Sai-Wing Chan, MD is an obstetrics & gynecology physician with a practice address in Santa Clara, California, and NPI 1508285180, issued on Apr 10, 2014. Check the license (California A138705, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sai-Wing Chan
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A138705 CA
Self-reported in NPPES; status is on the state search - Practice location
- 710 Lawrence Expy, Santa Clara, CA 95051
- Phone
- (408) 851-3842
- Enumerated
- Apr 10, 2014
- Record last updated
- Dec 17, 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
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Iype Abraham, M.D.Internal Medicine Physician1578737243
- Oren Abramson, MDPediatric Gastroenterology Physician1265511307
- Jamie Adiarte, PA-CPhysician Assistant1073824413
- Sarah Adut, PHDClinical Psychologist1609484831
- Najla Ahmadzia, M.D.Student in an Organized Health Care Education/Training Program1568692580
- Farhana Ahmed, MDHospitalist Physician1215110002
Verify Sai-Wing Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A138705Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
68 Medicare Part D claims for 34 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol24 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.
Sai-Wing Chan among 5,088 obstetrics & gynecology physician records in California
Sai-Wing Chan, 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 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 17% 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 Sai-Wing Chan, MD's NPI number?
Sai-Wing Chan, MD's National Provider Identifier (NPI) is 1508285180, issued on Apr 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Sai-Wing Chan, MD located?
The NPPES record lists a practice address at 710 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 851-3842. Providers update this record themselves, so call before visiting.
How can I verify Sai-Wing Chan, MD's license?
NPPES lists California license number A138705, 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 Sai-Wing Chan, MD prescribe under Medicare Part D?
In 2024, Sai-Wing Chan, MD had 68 Medicare Part D claims for 34 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.