NPPES file of Aug 9, 2026

Clara Jiayun Men, MD

Ophthalmology Physician · Stanford, CA

Clara Jiayun Men, MD is an ophthalmology physician with a practice address in Stanford, California, and NPI 1013376540, issued on Feb 11, 2016. Check the license (California A155664, 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
1013376540
Name
Clara Jiayun Men
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A155664 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(858) 534-8858
Enumerated
Feb 11, 2016
Record last updated
Mar 27, 2024
Medicare enrollment
Enrolled (PECOS I20200629003154); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 2016
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 300 Pasteur Dr

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

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Clara Jiayun Men in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A155664
    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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85% fewer Medicare Part D claims than the average ophthalmology physician in 2024

225 Medicare Part D claims for 134 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Clara Men225
  2. Specialty average1,518

Most prescribed

  1. Neomycin-Polymyxin-Dexameth139 claims
  2. Cyclosporine20 claims
  3. Erythromycin16 claims
  4. Amoxicillin-Clavulanate Potass12 claims
  5. Methylprednisolone12 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): 76.5 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. Qualityout of 100 · 30% of the final score74.3
  2. Costout of 100 · 30%44.0
  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. Permanente Medical Group IncUnion City, CA

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

Clara Jiayun Men among 2,899 ophthalmology physician records in California

Clara Jiayun Men, MD is one of 2,899 ophthalmology 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 2016, is newer than 86% of them.

  • NPI issued2016 · 86% of these records are older, 12% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2016 · median 2001 among the 1,907 with a school on file
  • Record last updated2024 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

53 ophthalmology physician records list a practice address in Stanford

They are 53 of the 5,606 NPPES records with a practice address in Stanford, and 2,899 ophthalmology physician records in California.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Mark Blumenkranz, M.D.Stanford, CA 943051114085636
  2. Clement Cheng, MDStanford, CA 943051629065826
  3. Jason Ehrlich, M.D., PH.D.Stanford, CA 943051447446752
  4. Ann Fisher, MDStanford, CA 943051861417636
  5. Henry Kistler, M.D., PH.D.Stanford, CA 943051508992108
  6. Vinit Mahajan, MD PHDStanford, CA 943051497784300
  7. Michael Marmor, M.D.Stanford, CA 943051225181662
  8. Artis Montague, MD, PHDStanford, CA 943051679680086

Common questions

What is Clara Jiayun Men, MD's NPI number?

Clara Jiayun Men, MD's National Provider Identifier (NPI) is 1013376540, issued on Feb 11, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Clara Jiayun Men, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (858) 534-8858. Providers update this record themselves, so call before visiting.

How can I verify Clara Jiayun Men, MD's license?

NPPES lists California license number A155664, 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 Clara Jiayun Men, MD prescribe under Medicare Part D?

In 2024, Clara Jiayun Men, MD had 225 Medicare Part D claims for 134 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Clara Jiayun Men, MD's MIPS final score?

The 2023 MIPS final score is 76.5 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.