NPPES file of Aug 9, 2026

Julie S. Chen, O.D.

Optometrist · San Francisco, CA

Julie S. Chen, O.D. is an optometrist with a practice address in San Francisco, California, and NPI 1841326493, issued on Feb 26, 2007. Check the license (California 11343T, as entered in NPPES) with the California board that licenses this profession; 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
1841326493
Name
Julie S. Chen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
11343T CA
Self-reported in NPPES; status is on the state search
Practice location
245 Market St Ste 6, San Francisco, CA 94105
Phone
(415) 777-2870
Enumerated
Feb 26, 2007
Record last updated
Jan 3, 2022
Fax
(415) 777-9819
Medicare enrollment
Enrolled (PECOS I20040916000845); accepts Medicare assignment
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 Julie S. Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 11343T
    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
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91% fewer Medicare Part D claims than the average optometrist in 2024

25 Medicare Part D claims for 18 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Julie Chen25
  2. Specialty average277

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 IncSan Mateo, CA

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

Julie S. Chen among 8,308 optometrist records in California

Julie S. Chen, O.D. is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 34% of them.

  • NPI issued2007 · 34% of these records are older, 46% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated2000 · median 2008 among the 3,573 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 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in California

There are 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. Zita Alamparambil, ODSan Francisco, CA 941051669177754
  2. Jiamee Chau, O.D.San Francisco, CA 941051811309677
  3. Patricia Chu, O.D.San Francisco, CA 941051508908138
  4. Kiyoka Hansen, ODSan Francisco, CA 941051497189013
  5. Angela Hoe, O.D.San Francisco, CA 941051891979720
  6. Jennifer Kuo, O.D.San Francisco, CA 941051992052567
  7. Echo Lai, ODSan Francisco, CA 941051134503055
  8. Leona Landers, O.D.San Francisco, CA 941051255442786

Common questions

What is Julie S. Chen, O.D.'s NPI number?

Julie S. Chen, O.D.'s National Provider Identifier (NPI) is 1841326493, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Julie S. Chen, O.D. located?

The NPPES record lists a practice address at 245 Market St Ste 6, San Francisco, CA, 94105. Phone: (415) 777-2870. Providers update this record themselves, so call before visiting.

How can I verify Julie S. Chen, O.D.'s license?

NPPES lists California license number 11343T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Julie S. Chen, O.D. prescribe under Medicare Part D?

In 2024, Julie S. Chen, O.D. had 25 Medicare Part D claims for 18 beneficiaries; the average among optometrist prescribers was 277. 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.