NPPES file of Aug 9, 2026

Yen-Hua Yu, D.O.

Emergency Medicine Physician · Pleasanton, CA

Yen-Hua Yu, D.O. is an emergency medicine physician with a practice address in Pleasanton, California, and NPI 1134356868, issued on Jun 21, 2009. Check the license (California 20A12941, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134356868
Name
Yen-Hua Yu
Credential
D.O.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
20A12941 CA
Self-reported in NPPES; status is on the state search
Practice location
5555 W Las Positas Blvd, Pleasanton, CA 94588
Phone
(925) 416-6585
Enumerated
Jun 21, 2009
Record last updated
Apr 11, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20141002000491); accepts Medicare assignment
Medical or professional school
Lake Erie College Of Osteopathic Medicine, Erie, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5555 W Las Positas Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dennis Alfaro, M.D.Emergency Medicine Physician1407847718
  2. Ashley Altman, MDDiagnostic Radiology Physician1649697947
  3. Joshua AshfordEmergency Registered Nurse1972458941
  4. Abinav Baweja, MDMedical Oncology Physician1770961575
  5. Brooke BettsPharmacist1962178491
  6. Myrna Castelazo, M.D.Diagnostic Radiology Physician1407290513

Verify Yen-Hua Yu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A12941
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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31% more Medicare Part D claims than the average emergency medicine physician in 2024

295 Medicare Part D claims for 205 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 39 claims were for opioids.

  1. Yen-Hua Yu295
  2. Specialty average226

Most prescribed

  1. Hydrocodone-Acetaminophen28 claims
  2. Cephalexin24 claims
  3. Ondansetron Odt23 claims
  4. Amoxicillin-Clavulanate Potass17 claims
  5. Albuterol Sulfate Hfa15 claims
  6. Meclizine Hcl15 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): 100 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.

  1. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Pleasanton Emergency Medical GroupDublin, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Yen-Hua Yu among 7,751 emergency medicine physician records in California

Yen-Hua Yu, D.O. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.

  • NPI issued2009 · 54% of these records are older, 42% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2009 · median 2011 among the 4,560 with a school on file
  • Record last updated2018 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

27 emergency medicine physician records list a practice address in Pleasanton

They are 27 of the 2,213 NPPES records with a practice address in Pleasanton, and 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Dennis Alfaro, M.D.Pleasanton, CA 945881407847718
  2. Paul Chasin, MDPleasanton, CA 945881649261959
  3. Michael Costello, MDPleasanton, CA 945881477544781
  4. Colleen Johnson, MDPleasanton, CA 945881720079049
  5. Edward Kan, MDPleasanton, CA 945881104804426
  6. Robert MandibergPleasanton, CA 945881336130640
  7. Gerald Nazareno, MDPleasanton, CA 945881679564983
  8. Cynthia Penn-Duecker, MDPleasanton, CA 945881033100359

Common questions

What is Yen-Hua Yu, D.O.'s NPI number?

Yen-Hua Yu, D.O.'s National Provider Identifier (NPI) is 1134356868, issued on Jun 21, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Yen-Hua Yu, D.O. located?

The NPPES record lists a practice address at 5555 W Las Positas Blvd, Pleasanton, CA, 94588. Phone: (925) 416-6585. Providers update this record themselves, so call before visiting.

How can I verify Yen-Hua Yu, D.O.'s license?

NPPES lists California license number 20A12941, 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 Yen-Hua Yu, D.O. prescribe under Medicare Part D?

In 2024, Yen-Hua Yu, D.O. had 295 Medicare Part D claims for 205 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is Yen-Hua Yu, D.O.'s MIPS final score?

The 2023 MIPS final score is 100 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.