Kelvin Chen, MD
Internal Medicine Physician · Rosemead, CA
Kelvin Chen, MD is an internal medicine physician with a practice address in Rosemead, California, and NPI 1225387137, issued on Sep 6, 2012. Check the license (California A 129170, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kelvin Chen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A 129170 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2421 San Gabriel Blvd, Rosemead, CA 91770
- Phone
- (626) 741-5411
- Enumerated
- Sep 6, 2012
- Record last updated
- May 1, 2025
- Fax
- (626) 741-5412
- Medicare enrollment
- Enrolled (PECOS I20141002001949); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Kelvin Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A 129170Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
972 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium89 claims
- Tamsulosin Hcl41 claims
- Losartan Potassium37 claims
- Allopurinol34 claims
- Metformin Hcl31 claims
- Pantoprazole Sodium26 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Arcadia Hospitalist Medical Group IncArcadia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelvin Chen among 17,696 internal medicine physician records in California
Kelvin Chen, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 internal medicine physician records list a practice address in Rosemead
They are 14 of the 839 NPPES records with a practice address in Rosemead, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rosemead → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Andy Chen, MDRosemead, CA 917701831153659
- Josephine Choa, M.D.Rosemead, CA 917701356384408
- Han Duong, M.D.& D.O.Rosemead, CA 917701013070234
- Susan Heller, M.D.Rosemead, CA 917701720251929
- Harold Hsu, M.D.Rosemead, CA 917701770508111
- Son Le, M.D.Rosemead, CA 917701942290762
- Tam Le, M.DRosemead, CA 917701154480077
- Hong Liang, M.D.Rosemead, CA 917701598784340
Common questions
What is Kelvin Chen, MD's NPI number?
Kelvin Chen, MD's National Provider Identifier (NPI) is 1225387137, issued on Sep 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Kelvin Chen, MD located?
The NPPES record lists a practice address at 2421 San Gabriel Blvd, Rosemead, CA, 91770. Phone: (626) 741-5411. Providers update this record themselves, so call before visiting.
How can I verify Kelvin Chen, MD's license?
NPPES lists California license number A 129170, 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 Kelvin Chen, MD prescribe under Medicare Part D?
In 2024, Kelvin Chen, MD had 972 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Kelvin Chen, MD's MIPS final score?
The 2023 MIPS final score is 81.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.