Chun Yen Hsu, M.D.
Gastroenterology Physician · Monterey Park, CA
Chun Yen Hsu, M.D. is a gastroenterology physician with a practice address in Monterey Park, California, and NPI 1902831894, issued on Jul 11, 2006. Check the license (California A37929, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chun Yen Hsu
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A37929 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Garfield Ave, Monterey Park, CA 91754
- Phone
- (626) 573-9979
- Enumerated
- Jul 11, 2006
- Record last updated
- Jul 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- A379290 CA
- Medicare enrollment
- Enrolled (PECOS I20100818001029); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 600 N Garfield Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Huo Chen, M.D.Specialist1164454286
- Na Chou, NP-CFamily Nurse Practitioner1114465176
- Kwok Leung Chung, M.D.Gastroenterology Physician1760490627
- Tom Giang, M.D.Internal Medicine Physician1669668901
- Cali Ho, MS, OTR/LOccupational Therapist1609027770
- Jasmine JumawanPhysical Therapy Assistant1578951349
Verify Chun Yen Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A37929Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average gastroenterology physician in 2024
387 Medicare Part D claims for 215 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Gavilyte-G60 claims
- Famotidine51 claims
- Peg 3350-Electrolyte38 claims
- Sod Sulf-Potass Sulf-Mag Sulf38 claims
- Omeprazole35 claims
- Vemlidy32 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.
Chun Yen Hsu among 2,140 gastroenterology physician records in California
Chun Yen Hsu, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1977 · median 2002 among the 1,538 with a school on file
- Record last updated2010 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 gastroenterology physician records list a practice address in Monterey Park
They are 10 of the 948 NPPES records with a practice address in Monterey Park, and 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Monterey Park → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Dennis Chan, M. D.Monterey Park, CA 917541053343434
- Suisun Chan, M.D.Monterey Park, CA 917541801815527
- Kwok Leung Chung, M.D.Monterey Park, CA 917541760490627
- Firmin Ho, M.D.Monterey Park, CA 917541497746960
- Fernando Ibarra, MDMonterey Park, CA 917541013082726
- Chia Chi Lai, M.D.Monterey Park, CA 917541043238413
- Yang Liu, M.D.Monterey Park, CA 917541033430913
- Shih-Lin Lue, M.D.Monterey Park, CA 917541992895346
Common questions
What is Chun Yen Hsu, M.D.'s NPI number?
Chun Yen Hsu, M.D.'s National Provider Identifier (NPI) is 1902831894, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chun Yen Hsu, M.D. located?
The NPPES record lists a practice address at 600 N Garfield Ave, Monterey Park, CA, 91754. Phone: (626) 573-9979. Providers update this record themselves, so call before visiting.
How can I verify Chun Yen Hsu, M.D.'s license?
NPPES lists California license number A37929, 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 Chun Yen Hsu, M.D. prescribe under Medicare Part D?
In 2024, Chun Yen Hsu, M.D. had 387 Medicare Part D claims for 215 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.