NPPES file of Aug 9, 2026

Judy Lynn Chen

Uveitis and Ocular Inflammatory Disease (Ophthalmology) Physician · Pasadena, CA

Judy Lynn Chen is a uveitis and ocular inflammatory disease (ophthalmology) physician with a practice address in Pasadena, California, and NPI 1801240916, issued on Apr 15, 2016. Check the license (California A168479, 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
1801240916
Name
Judy Lynn Chen
Primary taxonomy
Uveitis and Ocular Inflammatory Disease (Ophthalmology) Physician 207WX0108X
License number
A168479 CA
Self-reported in NPPES; status is on the state search
Practice location
625 S Fair Oaks Ave Ste 227, Pasadena, CA 91105
Phone
(626) 817-4747
Enumerated
Apr 15, 2016
Record last updated
Jan 22, 2025
Medicare enrollment
Enrolled (PECOS I20200521003208); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 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 625 S Fair Oaks Ave Ste 227

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

  1. Ramin KarimiNeurology Physician1891255048
  2. Nikita Maniar, MDNeurology Physician1225547722
  3. Alfredo Sadun, M.D., PH.D.Ophthalmology Physician1841342367

Verify Judy Lynn 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 A168479
    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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2.6 times the Medicare Part D claims of the average uveitis and ocular inflammatory disease (ophthalmology) physician in 2024

2,417 Medicare Part D claims for 412 beneficiaries, against an average of 916 among the 45 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.

  1. Judy Chen2,417
  2. Specialty average916

Most prescribed

  1. Latanoprost458 claims
  2. Prednisolone Acetate312 claims
  3. Brimonidine Tartrate270 claims
  4. Timolol Maleate211 claims
  5. Dorzolamide-Timolol146 claims
  6. Ofloxacin105 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): 74.6 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 score85.0
  2. Costout of 100 · 30%30.2
  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).

Industry payments in 2024: $337.20

5 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 42 providers of this specialty with any payment received $10,742.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Judy Chen$337
  2. Specialty average$10,742

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. Jules Stein Eye Institute Medical GroupPasadena, CA

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

Uveitis and Ocular Inflammatory Disease (Ophthalmology) Physician providers in California

There are 8 uveitis and ocular inflammatory disease (ophthalmology) physician records in California.

The 7 uveitis and ocular inflammatory disease (ophthalmology) physician records with the nearest ZIP codes

  1. Jennifer Lee, M.D.Santee, CA 920711053708305
  2. Edmund Tsui, MDLos Angeles, CA 900951255743712
  3. Olivia Lee, M.D.Irvine, CA 926171134279995
  4. Sanjay Kedhar, M.D.Irvine, CA 926971700833951
  5. Adrian Tsang, MDSan Francisco, CA 941581033782636
  6. Quan Nguyen, MDStanford, CA 943051487608766
  7. Sarju Patel, M.D. MSCSacramento, CA 958191730384876

Common questions

What is Judy Lynn Chen's NPI number?

Judy Lynn Chen's National Provider Identifier (NPI) is 1801240916, issued on Apr 15, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Judy Lynn Chen located?

The NPPES record lists a practice address at 625 S Fair Oaks Ave Ste 227, Pasadena, CA, 91105. Phone: (626) 817-4747. Providers update this record themselves, so call before visiting.

How can I verify Judy Lynn Chen's license?

NPPES lists California license number A168479, 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 Judy Lynn Chen prescribe under Medicare Part D?

In 2024, Judy Lynn Chen had 2,417 Medicare Part D claims for 412 beneficiaries; the average among uveitis and ocular inflammatory disease (ophthalmology) physician prescribers was 916. Part D covers Medicare prescriptions only.

What is Judy Lynn Chen's MIPS final score?

The 2023 MIPS final score is 74.6 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.