Avis Lailing Chan, MD, MS
Obstetrics & Gynecology Physician · Santa Clara, CA
Avis Lailing Chan, MD, MS is an obstetrics & gynecology physician with a practice address in Santa Clara, California, and NPI 1831727056, issued on Apr 1, 2020. Check the license (California A182108, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Avis Lailing Chan
- Credential
- MD, MS
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A182108 CA
Self-reported in NPPES; status is on the state search - Practice location
- 700 Lawrence Expy, Santa Clara, CA 95051
- Phone
- (408) 851-1000
- Enumerated
- Apr 1, 2020
- Record last updated
- Jul 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20240814003086); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 700 Lawrence Expy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rose Abendroth, P.A-C PHDPhysician Assistant1568471126
- Joseph Adams, PHARMD.Pharmacist1851625024
- Netali AdielDoula1003770652
- Abdallah Al-ObaidiStudent in an Organized Health Care Education/Training Program1255133781
- Andrea Mae AlafrizPharmacist1770450967
- Andria AlbertStudent in an Organized Health Care Education/Training Program1992565493
Verify Avis Lailing Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A182108Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
27 Medicare Part D claims for 20 beneficiaries, against an average of 165 among the 28,733 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Avis Lailing Chan among 5,088 obstetrics & gynecology physician records in California
Avis Lailing Chan, MD, MS 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 2020, is newer than 94% of them.
- NPI issued2020 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2006 · median 2004 among the 2,700 with a school on file
- Record last updated2024 · 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 Avis Lailing Chan, MD, MS's NPI number?
Avis Lailing Chan, MD, MS's National Provider Identifier (NPI) is 1831727056, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Avis Lailing Chan, MD, MS located?
The NPPES record lists a practice address at 700 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 851-1000. Providers update this record themselves, so call before visiting.
How can I verify Avis Lailing Chan, MD, MS's license?
NPPES lists California license number A182108, 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 Avis Lailing Chan, MD, MS prescribe under Medicare Part D?
In 2024, Avis Lailing Chan, MD, MS had 27 Medicare Part D claims for 20 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.