David Wei-Yun Chiang, MD
Family Medicine Physician · Santa Clara, CA
David Wei-Yun Chiang, MD is a family medicine physician with a practice address in Santa Clara, California, and NPI 1891150686, issued on Dec 21, 2015. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Wei-Yun Chiang
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036.147107 IL
Self-reported in NPPES; status is on the state search - Practice location
- 700 Lawrence Expy, Santa Clara, CA 95051
- Phone
- (408) 838-8412
- Enumerated
- Dec 21, 2015
- Record last updated
- Jul 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20221019000316); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2014
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 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 David Wei-Yun Chiang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average family medicine physician in 2024
3,305 Medicare Part D claims for 676 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 55 claims were for opioids.
Most prescribed
- Atorvastatin Calcium340 claims
- Amlodipine Besylate205 claims
- Losartan Potassium140 claims
- Lisinopril130 claims
- Levothyroxine Sodium129 claims
- Metformin Hcl118 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.
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).
David Wei-Yun Chiang among 17,133 family medicine physician records in California
David Wei-Yun Chiang, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 74% of them.
- NPI issued2015 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2014 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 family medicine physician records list a practice address in Santa Clara
They are 50 of the 3,436 NPPES records with a practice address in Santa Clara, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Clara → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Anzaldua, M.D.Santa Clara, CA 950511699822346
- Shailaja Bhatia, M.D.Santa Clara, CA 950511871728691
- Yu-Lian Chang, M.D.Santa Clara, CA 950511942495437
- Namisha Chotai, M.D.Santa Clara, CA 950511639377872
- Peter Chung, D.OSanta Clara, CA 950511720083694
- Craig Job, M.D.Santa Clara, CA 950511669561585
- Dilshad Kekobad, MDSanta Clara, CA 950511396792511
- Anuradha Kottapalli, MDSanta Clara, CA 950511215975750
Common questions
What is David Wei-Yun Chiang, MD's NPI number?
David Wei-Yun Chiang, MD's National Provider Identifier (NPI) is 1891150686, issued on Dec 21, 2015. An NPI identifies a provider in billing; it is not a license.
Where is David Wei-Yun Chiang, MD located?
The NPPES record lists a practice address at 700 Lawrence Expy, Santa Clara, CA, 95051. Phone: (408) 838-8412. Providers update this record themselves, so call before visiting.
How can I verify David Wei-Yun Chiang, MD's license?
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 David Wei-Yun Chiang, MD prescribe under Medicare Part D?
In 2024, David Wei-Yun Chiang, MD had 3,305 Medicare Part D claims for 676 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.