Audrey Yen, M.D.
Anesthesiology Physician · Fontana, CA
Audrey Yen, M.D. is an anesthesiology physician with a practice address in Fontana, California, and NPI 1639498074, issued on May 25, 2010. Check the license (California A 109718, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Audrey Yen
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A 109718 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 302-4938
- Enumerated
- May 25, 2010
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 302-4834
- Medicare enrollment
- Enrolled (PECOS I20120905000686); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Audrey Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A 109718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Southern California Permanente Medical GroupOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Audrey Yen among 7,571 anesthesiology physician records in California
Audrey Yen, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2008 · median 2006 among the 4,868 with a school on file
- Record last updated2021 · 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 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Fontana → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Charley Berona, MDFontana, CA 923351467511022
- John Chen, D.O.Fontana, CA 923351649356023
- Wynda Chung, MDFontana, CA 923351942371869
- Thien Doan, MDFontana, CA 923351568510444
- Douglas Flores, MDFontana, CA 923351629126602
- Batool Hajianpour, MDFontana, CA 923351134296940
- Thelma Korpman, MDFontana, CA 923351558420158
- Dennis Lindeborg, MDFontana, CA 923351649341694
Common questions
What is Audrey Yen, M.D.'s NPI number?
Audrey Yen, M.D.'s National Provider Identifier (NPI) is 1639498074, issued on May 25, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Audrey Yen, M.D. located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 302-4938. Providers update this record themselves, so call before visiting.
How can I verify Audrey Yen, M.D.'s license?
NPPES lists California license number A 109718, 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.