Andrew Yen, M.D.
Internal Medicine Physician · Mather, CA
Andrew Yen, M.D. is an internal medicine physician with a practice address in Mather, California, and NPI 1992781884, issued on Dec 21, 2005. Check the license (California A92631, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Yen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A92631 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10535 Hospital Way, Mather, CA 95655
- Phone
- (916) 366-5339
- Enumerated
- Dec 21, 2005
- Record last updated
- Aug 10, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
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Verify Andrew Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A92631Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $72.55
3 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi-Aventis U.S. LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Andrew Yen among 17,696 internal medicine physician records in California
Andrew Yen, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2010 · 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).
26 internal medicine physician records list a practice address in Mather
They are 26 of the 398 NPPES records with a practice address in Mather, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Mather → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sheldon Ball, MDMather, CA 956551689646275
- Patrick Chang, MDMather, CA 956551861467656
- Stephen Drogin, M.D.Carmichael Ca, CA 956551891710315
- Philip Eulie, M.D.Mather, CA 956551669455762
- Clifford Fisher, MDMather, CA 956551063495687
- Dorothea Hoover, MDMather, CA 956551609802800
- Rajasekar Jagadeesan, M.D.Mather, CA 956551790967586
- Jaeho Lee, M.D.Mather, CA 956551578547048
Common questions
What is Andrew Yen, M.D.'s NPI number?
Andrew Yen, M.D.'s National Provider Identifier (NPI) is 1992781884, issued on Dec 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Yen, M.D. located?
The NPPES record lists a practice address at 10535 Hospital Way, Mather, CA, 95655. Phone: (916) 366-5339. Providers update this record themselves, so call before visiting.
How can I verify Andrew Yen, M.D.'s license?
NPPES lists California license number A92631, 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.
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.