Eric Yen
Allergy & Immunology Physician · Torrance, CA
Eric Yen is an allergy & immunology physician with a practice address in Torrance, California, and NPI 1447464375, issued on May 10, 2007. Check the license (California A98436, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eric Yen
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- A98436 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3701 Skypark Dr Ste 200, Torrance, CA 90505
- Phone
- (310) 378-8900
- Enumerated
- May 10, 2007
- Record last updated
- Jan 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20100716000399); accepts Medicare assignment
- Medical or professional school
- University Of North Carolina At Chapel Hill School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 3701 Skypark Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aditya Kotecha, M.D.Pulmonary Disease Physician1811375371
- Yana Kryvokhyzha, DOAllergy & Immunology Physician1548753312
- Cole Liberator, M. D.Pulmonary Disease Physician1912261736
Verify Eric Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98436Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
502 Medicare Part D claims for 103 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Ipratropium Bromide44 claims
- Azelastine Hcl43 claims
- Epinephrine35 claims
- Fluticasone Propionate32 claims
- Dupixent Syringe30 claims
- Dupixent Pen29 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): 86.1 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
- The Regents OF The University OF CaliforniaTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric Yen among 444 allergy & immunology physician records in California
Eric Yen is one of 444 allergy & immunology 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 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 38% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2004 · median 2004 among the 281 with a school on file
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Torrance → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Dean Chiang, M.D.Torrance, CA 905051760484455
- Stephen Grifka, M.D.Torrance, CA 905051902089006
- Yana Kryvokhyzha, DOTorrance, CA 905051548753312
- Connie Lin, M.D.Torrance, CA 905051760825590
- Allan Singer, M.D.Torrance, CA 905051417951070
- Ellyn Ashida, MDTorrance, CA 905031245201516
- Edward Buchsbaum, MDTorrance, CA 905031376648170
- Heather Volpp, M.D.Torrance, CA 905031083702120
Common questions
What is Eric Yen's NPI number?
Eric Yen's National Provider Identifier (NPI) is 1447464375, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Eric Yen located?
The NPPES record lists a practice address at 3701 Skypark Dr Ste 200, Torrance, CA, 90505. Phone: (310) 378-8900. Providers update this record themselves, so call before visiting.
How can I verify Eric Yen's license?
NPPES lists California license number A98436, 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 Eric Yen prescribe under Medicare Part D?
In 2024, Eric Yen had 502 Medicare Part D claims for 103 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Eric Yen's MIPS final score?
The 2023 MIPS final score is 86.1 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.