Yih Jen Kok, M.D.
Cardiovascular Disease Physician · San Gabriel, CA
Yih Jen Kok, M.D. is a cardiovascular disease physician with a practice address in San Gabriel, California, and NPI 1518928829, issued on Mar 29, 2006. Check the license (California A71806, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yih Jen Kok
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A71806 CA
Self-reported in NPPES; status is on the state search - Practice location
- 506 W Valley Blvd, San Gabriel, CA 91776
- Phone
- (626) 308-3800
- Enumerated
- Mar 29, 2006
- Record last updated
- May 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (626) 308-1899
- Medicaid ID
- 00A718060 CA
- Medicare enrollment
- Enrolled (PECOS I20060419000828); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 506 W Valley Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven ChanCardiovascular Disease Physician1790218824
- Derrick ChiNurse Practitioner1750248233
- Shirley Chiang, NPFamily Nurse Practitioner1003173410
- An Elowe, PA-CPhysician Assistant1548443310
- Stanley Lau, M.D.Cardiovascular Disease Physician1548222813
- William Ng, MDInternal Medicine Physician1518298041
Verify Yih Jen Kok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average cardiovascular disease physician in 2024
8,213 Medicare Part D claims for 1,110 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Metoprolol Succinate1,074 claims
- Clopidogrel1,067 claims
- Eliquis567 claims
- Carvedilol497 claims
- Losartan Potassium476 claims
- Amlodipine Besylate471 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: $799.75
17 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. 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 2 group practices
- David C P Chen, M.D., IncSan Gabriel, CA
- Southern California Heart Centers A Medical CorporationSan Gabriel, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yih Jen Kok among 2,574 cardiovascular disease physician records in California
Yih Jen Kok, 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
- Graduated1992 · median 1999 among the 1,742 with a school on file
- Record last updated2008 · 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
- Stanley Lau, M.D.San Gabriel, CA 917761548222813
- James Liu, M.D.San Gabriel, CA 917761518074731
- Kelvin Yee, M.D.San Gabriel, CA 917761982747846
- Greg Yen, M.D.San Gabriel, CA 917761093739021
- Michael Cao, MDRosemead, CA 917701548488877
- Tom Yeh, M.D.Rosemead, CA 917701811055874
Common questions
What is Yih Jen Kok, M.D.'s NPI number?
Yih Jen Kok, M.D.'s National Provider Identifier (NPI) is 1518928829, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Yih Jen Kok, M.D. located?
The NPPES record lists a practice address at 506 W Valley Blvd, San Gabriel, CA, 91776. Phone: (626) 308-3800. Providers update this record themselves, so call before visiting.
How can I verify Yih Jen Kok, M.D.'s license?
NPPES lists California license number A71806, 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 Yih Jen Kok, M.D. prescribe under Medicare Part D?
In 2024, Yih Jen Kok, M.D. had 8,213 Medicare Part D claims for 1,110 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.