NPPES file of Aug 9, 2026

Yilin Chu, M.D.

Ophthalmology Physician · Woodland, CA

Yilin Chu, M.D. is an ophthalmology physician with a practice address in Woodland, California, and NPI 1659394179, issued on Jul 25, 2006. Check the license (California A91432, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659394179
Name
Yilin Chu
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A91432 CA
Self-reported in NPPES; status is on the state search
Practice location
1207 Fairchild CT, Woodland, CA 95695
Phone
(530) 666-1631
Enumerated
Jul 25, 2006
Record last updated
Jan 3, 2022
Fax
(530) 668-9591
Medicaid ID
00A914320 CA
Medicare enrollment
Enrolled (PECOS I20051019000539); accepts Medicare assignment
Medical or professional school
University Of Texas Southwestern Medical School At Dallas, 2001
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 1207 Fairchild CT

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

  1. Clara Cazares, LCSWClinical Social Worker1851550644
  2. Abby Corken, AMFTMarriage & Family Therapist1245098243
  3. Ann Marie Davigo, PA-CPhysician Assistant1821027343
  4. Amie Diller, CNMAdvanced Practice Midwife1235167164
  5. Jonathan Funk, MDPsychiatry Physician1710306659
  6. Lucy Funk, MDPsychiatry Physician1366948143

Verify Yilin Chu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A91432
    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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40% more Medicare Part D claims than the average ophthalmology physician in 2024

2,131 Medicare Part D claims for 537 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. Yilin Chu2,131
  2. Specialty average1,518

Most prescribed

  1. Latanoprost620 claims
  2. Dorzolamide-Timolol355 claims
  3. Prednisolone Acetate296 claims
  4. Polymyxin B Sul-Trimethoprim201 claims
  5. Brimonidine Tartrate194 claims
  6. Timolol Maleate91 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncSanta Clara, CA

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

Yilin Chu among 2,899 ophthalmology physician records in California

Yilin Chu, M.D. 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 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 45% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2001 · median 2001 among the 1,907 with a school on file
  • Record last updated2022 · 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).

Ophthalmology Physician providers in California

There are 2,899 ophthalmology physician records in California.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Carmine Cammarosano, M.D.Woodland, CA 956951811913205
  2. Filbert Nguyen, MDWoodland, CA 956951437443983
  3. Jonathan Perlman, MDWoodland, CA 956951972510477
  4. Jonathan Diamant, MDVacaville, CA 956881649358474
  5. John Doyle, MDVacaville, CA 956881194803080
  6. Charles Huang, M.D.Vacaville, CA 956881023080355
  7. Ellen Kolarik, MDVacaville, CA 956881326110131
  8. Douglas Beernink, MDCameron Park, CA 956821992883656

Common questions

What is Yilin Chu, M.D.'s NPI number?

Yilin Chu, M.D.'s National Provider Identifier (NPI) is 1659394179, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Yilin Chu, M.D. located?

The NPPES record lists a practice address at 1207 Fairchild CT, Woodland, CA, 95695. Phone: (530) 666-1631. Providers update this record themselves, so call before visiting.

How can I verify Yilin Chu, M.D.'s license?

NPPES lists California license number A91432, 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 Yilin Chu, M.D. prescribe under Medicare Part D?

In 2024, Yilin Chu, M.D. had 2,131 Medicare Part D claims for 537 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

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.