NPPES file of Aug 9, 2026

Yung Chen, MD

Physical Medicine & Rehabilitation Physician · San Mateo, CA

Yung Chen, MD is a physical medicine & rehabilitation physician with a practice address in San Mateo, California, and NPI 1386601623, issued on Apr 28, 2006. Check the license (California A54788, 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
1386601623
Name
Yung Chen
Credential
MD
Primary taxonomy
Physical Medicine & Rehabilitation Physician 208100000X
License number
A54788 CA
Self-reported in NPPES; status is on the state search
Practice location
101 S San Mateo Dr Ste 301, San Mateo, CA 94401
Phone
(650) 558-1802
Enumerated
Apr 28, 2006
Record last updated
Apr 13, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(650) 558-1806
Medicare enrollment
Enrolled (PECOS I20040223001253); accepts Medicare assignment
Medical or professional school
Baylor College Of Medicine, 1994
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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Verify Yung Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A54788
    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

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45% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024

399 Medicare Part D claims for 170 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D.

  1. Yung Chen399
  2. Specialty average727

Most prescribed

  1. Cephalexin207 claims
  2. Gabapentin71 claims
  3. Azithromycin60 claims
  4. Methylprednisolone41 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 MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Industry payments in 2024: $221.89

4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 3,895 providers of this specialty with any payment received $1,237.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Yung Chen$221.89
  2. Specialty average$1,237.86

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Yung Chen among 1,549 physical medicine & rehabilitation physician records in California

Yung Chen, MD is one of 1,549 physical medicine & rehabilitation physician records with a practice address in California. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 70% newer
  • In a Medicare fileYes · 59% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated1994 · median 2008 among the 786 with a school on file
  • Record last updated2010 · 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 208100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physical Medicine & Rehabilitation Physician providers in California

There are 1,549 physical medicine & rehabilitation physician records in California.

The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes

  1. Lefkos Aftonomos, M.D.San Mateo, CA 944011972544088
  2. Tram Nguyen, M.D.San Mateo, CA 944011336257534
  3. Aaron Parnell, ACSTSan Mateo, CA 944011629611405
  4. Christian Sustrina, PTASan Mateo, CA 944031013737568
  5. Kari Robinson, PTPalo Alto, CA 943061477831089
  6. Navjeet Boparai, MDPalo Alto, CA 943051407025299
  7. Edward Chaw, DOPalo Alto, CA 943051679742472
  8. Raymond Chou, MDStanford, CA 943051376934067

Common questions

What is Yung Chen, MD's NPI number?

Yung Chen, MD's National Provider Identifier (NPI) is 1386601623, issued on Apr 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Yung Chen, MD located?

The NPPES record lists a practice address at 101 S San Mateo Dr Ste 301, San Mateo, CA, 94401. Phone: (650) 558-1802. Providers update this record themselves, so call before visiting.

How can I verify Yung Chen, MD's license?

NPPES lists California license number A54788, 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 Yung Chen, MD prescribe under Medicare Part D?

In 2024, Yung Chen, MD had 399 Medicare Part D claims for 170 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.

What is Yung Chen, MD's MIPS final score?

The 2023 MIPS final score is 0 of 100. 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.