John Chiensing Chiu, M.D.
Family Medicine Physician · Cupertino, CA
John Chiensing Chiu, M.D. is a family medicine physician with a practice address in Cupertino, California, and NPI 1184716136, issued on Sep 28, 2006. Check the license (California G72501, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Chiensing Chiu
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G72501 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10440 S DE Anza Blvd, Cupertino, CA 95014
- Phone
- (408) 863-0709
- Enumerated
- Sep 28, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 863-0245
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 10440 S DE Anza Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Chiensing Chiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G72501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
332 Medicare Part D claims for 26 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium37 claims
- Hydrochlorothiazide23 claims
- Metoprolol Succinate23 claims
- Metformin Hcl Er20 claims
- Amlodipine Besylate17 claims
- Finasteride17 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.
John Chiensing Chiu among 17,133 family medicine physician records in California
John Chiensing Chiu, M.D. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 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).
10 family medicine physician records list a practice address in Cupertino
They are 10 of the 945 NPPES records with a practice address in Cupertino, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Cupertino → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Fernand Alvarez, M.D.Cupertino, CA 950141437167582
- Sara Bowling, M.D.Cupertino, CA 950141942576194
- Yung-Kuang Chen, MDCupertino, CA 950141619009404
- Marc-Alan Iwahashi, M.D.,Cupertino, CA 950141235123985
- Melissa Lin, MDCupertino, CA 950141205903200
- Matthew Manighalam, MDCupertino, CA 950141871079640
- Manjul Patwardhan, MDCupertino, CA 950141659398360
- Hung-Kwong Wong, M.D.Cupertino, CA 950141669558821
Common questions
What is John Chiensing Chiu, M.D.'s NPI number?
John Chiensing Chiu, M.D.'s National Provider Identifier (NPI) is 1184716136, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Chiensing Chiu, M.D. located?
The NPPES record lists a practice address at 10440 S DE Anza Blvd, Cupertino, CA, 95014. Phone: (408) 863-0709. Providers update this record themselves, so call before visiting.
How can I verify John Chiensing Chiu, M.D.'s license?
NPPES lists California license number G72501, 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 John Chiensing Chiu, M.D. prescribe under Medicare Part D?
In 2024, John Chiensing Chiu, M.D. had 332 Medicare Part D claims for 26 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.