Joseph Chekang Hsu, PAC
Physician Assistant · Diamond Bar, CA
Joseph Chekang Hsu, PAC is a physician assistant with a practice address in Diamond Bar, California, and NPI 1336444959, issued on Jan 12, 2011. Check the license (California PA21370, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joseph Chekang Hsu
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA21370 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1540 Bridgegate Dr, Diamond Bar, CA 91765
- Phone
- (626) 388-2359
- Enumerated
- Jan 12, 2011
- Record last updated
- Feb 16, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (626) 388-2365
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1540 Bridgegate Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Edwin Chuong, M.D.Internal Medicine Physician1427231802
Verify Joseph Chekang Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA21370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average physician assistant in 2024
14 Medicare Part D claims, against an average of 830 among the 101,058 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.
Joseph Chekang Hsu among 14,451 physician assistant records in California
Joseph Chekang Hsu, PAC is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 30% of them.
- NPI issued2011 · 30% of these records are older, 67% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2018 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 physician assistant records list a practice address in Diamond Bar
They are 12 of the 598 NPPES records with a practice address in Diamond Bar, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Diamond Bar → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kristofer AbejuelaDiamond Bar, CA 917651194122234
- Felipe Coronado, PA-CDiamond Bar, CA 917651508920059
- Lesley Kongaika, PA-CDiamond Bar, CA 917651083980007
- Keli Layton-Cunnigan, PADiamond Bar, CA 917651063613958
- Denette Munchel, PADiamond Bar, CA 917651184834699
- Kent Stout, PADiamond Bar, CA 917651336357896
- Ma Koreena Jayne Tran, PA-CDiamond Bar, CA 917651841751815
- Lynn Uchizono, PA-CDiamond Bar, CA 917651245598259
Common questions
What is Joseph Chekang Hsu, PAC's NPI number?
Joseph Chekang Hsu, PAC's National Provider Identifier (NPI) is 1336444959, issued on Jan 12, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Chekang Hsu, PAC located?
The NPPES record lists a practice address at 1540 Bridgegate Dr, Diamond Bar, CA, 91765. Phone: (626) 388-2359. Providers update this record themselves, so call before visiting.
How can I verify Joseph Chekang Hsu, PAC's license?
NPPES lists California license number PA21370, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joseph Chekang Hsu, PAC prescribe under Medicare Part D?
In 2024, Joseph Chekang Hsu, PAC had 14 Medicare Part D claims; the average among physician assistant prescribers was 830. 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.