Greg Shih-Han Yen, M.D.
Cardiovascular Disease Physician · San Gabriel, CA
Greg Shih-Han Yen, M.D. is a cardiovascular disease physician with a practice address in San Gabriel, California, and NPI 1093739021, issued on Jul 26, 2006. Check the license (California A061210, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Greg Shih-Han Yen
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A061210 CA
Self-reported in NPPES; status is on the state search - Practice location
- 131 E Las Tunas Dr, San Gabriel, CA 91776
- Phone
- (626) 576-8500
- Enumerated
- Jul 26, 2006
- Record last updated
- Feb 3, 2024
- Fax
- (626) 576-8050
- Medicaid ID
- 00A612100 CA
- Medicare enrollment
- Enrolled (PECOS I20040322000142); may accept Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Verify Greg Shih-Han Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A061210Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,914 Medicare Part D claims for 303 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Nitroglycerin231 claims
- Eliquis195 claims
- Amlodipine Besylate142 claims
- Metoprolol Succinate125 claims
- Atorvastatin Calcium124 claims
- Isosorbide Mononitrate Er95 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.
Industry payments in 2024: $156.59
1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- David C P Chen, M.D., IncSan Gabriel, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Greg Shih-Han Yen among 2,574 cardiovascular disease physician records in California
Greg Shih-Han Yen, M.D. is one of 2,574 cardiovascular disease 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 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1995 · median 1999 among the 1,742 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in San Gabriel → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Steven ChanSan Gabriel, CA 917761790218824
- Andrew Chen, M.D.San Gabriel, CA 917761740623958
- Yih Kok, M.D.San Gabriel, CA 917761518928829
- Stanley Lau, M.D.San Gabriel, CA 917761548222813
- James Liu, M.D.San Gabriel, CA 917761518074731
- Kelvin Yee, M.D.San Gabriel, CA 917761982747846
- Michael Cao, MDRosemead, CA 917701548488877
- Tom Yeh, M.D.Rosemead, CA 917701811055874
Common questions
What is Greg Shih-Han Yen, M.D.'s NPI number?
Greg Shih-Han Yen, M.D.'s National Provider Identifier (NPI) is 1093739021, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greg Shih-Han Yen, M.D. located?
The NPPES record lists a practice address at 131 E Las Tunas Dr, San Gabriel, CA, 91776. Phone: (626) 576-8500. Providers update this record themselves, so call before visiting.
How can I verify Greg Shih-Han Yen, M.D.'s license?
NPPES lists California license number A061210, 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 Greg Shih-Han Yen, M.D. prescribe under Medicare Part D?
In 2024, Greg Shih-Han Yen, M.D. had 1,914 Medicare Part D claims for 303 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.