NPPES file of Aug 9, 2026

Yi-Ren Chen, MD, MPH

Neurological Surgery Physician · Sacramento, CA

Yi-Ren Chen, MD, MPH is a neurological surgery physician with a practice address in Sacramento, California, and NPI 1114284478, issued on Apr 11, 2012. Check the license (California A126433, 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
1114284478
Name
Yi-Ren Chen
Credential
MD, MPH
Primary taxonomy
Neurological Surgery Physician 207T00000X
License number
A126433 CA
Self-reported in NPPES; status is on the state search
Practice location
3939 J St Ste 250, Sacramento, CA 95819
Phone
(916) 733-3401
Enumerated
Apr 11, 2012
Record last updated
Jul 25, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(916) 733-3410
Medicare enrollment
Enrolled (PECOS I20190820002734); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 Yi-Ren 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 A126433
    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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74% fewer Medicare Part D claims than the average neurological surgery physician in 2024

45 Medicare Part D claims for 32 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 29 claims were for opioids.

  1. Yi-Ren Chen45
  2. Specialty average172

Most prescribed

  1. Hydrocodone-Acetaminophen26 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): 96.5 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 score80.3
  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; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $19,078.97

12 payments; by number, the most common kind was travel and lodging; the largest payer was Zavation Medical Products, LLC. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Yi-Ren Chen$19,079
  2. Specialty average$14,926

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

Bills Medicare through one group practice

  1. Dignity Health Medical FoundationFolsom, CA

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

Yi-Ren Chen among 929 neurological surgery physician records in California

Yi-Ren Chen, MD, MPH is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 70% of them.

  • NPI issued2012 · 70% of these records are older, 26% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2012 · median 2005 among the 612 with a school on file
  • Record last updated2019 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurological Surgery Physician providers in California

There are 929 neurological surgery physician records in California.

The 8 neurological surgery physician records with the nearest ZIP codes

  1. Cully Cobb, M.D.Sacramento, CA 958191770502163
  2. Jennifer Jennings, MDSacramento, CA 958191942449244
  3. John Yen, M.D.Sacramento, CA 958191255350658
  4. Christine Boudreau, M.D.Sacramento, CA 958171497949838
  5. Julius Ebinu, M.D., PH.DSacramento, CA 958171225423957
  6. Michael Edwards, MDSacramento, CA 958171619051034
  7. Clayton Gerndt, MDSacramento, CA 958171982100772
  8. Fady Girgis, M.D.Sacramento, CA 958171972999712

Common questions

What is Yi-Ren Chen, MD, MPH's NPI number?

Yi-Ren Chen, MD, MPH's National Provider Identifier (NPI) is 1114284478, issued on Apr 11, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Yi-Ren Chen, MD, MPH located?

The NPPES record lists a practice address at 3939 J St Ste 250, Sacramento, CA, 95819. Phone: (916) 733-3401. Providers update this record themselves, so call before visiting.

How can I verify Yi-Ren Chen, MD, MPH's license?

NPPES lists California license number A126433, 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 Yi-Ren Chen, MD, MPH prescribe under Medicare Part D?

In 2024, Yi-Ren Chen, MD, MPH had 45 Medicare Part D claims for 32 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.

What is Yi-Ren Chen, MD, MPH's MIPS final score?

The 2023 MIPS final score is 96.5 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.