NPPES file of Aug 9, 2026

Katherine Chen

Ophthalmology Physician · Glendale, CA

Katherine Chen is an ophthalmology physician with a practice address in Glendale, California, and NPI 1053638726, issued on Apr 21, 2010. Check the license (California A136608, 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
1053638726
Name
Katherine Chen
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A136608 CA
Self-reported in NPPES; status is on the state search
Practice location
409 N Central Ave, Glendale, CA 91203
Phone
(818) 265-7777
Enumerated
Apr 21, 2010
Record last updated
May 7, 2024
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 409 N Central Ave

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

  1. Anna Gabrielian, M.D.Ophthalmology Physician1659528602
  2. Karine Gabrielian, M.D.Ophthalmology Physician1740388982
  3. Angel Gezalyan, ODOptometrist1710805981
  4. Araks Ghazaryan, ODOptometrist1811841190
  5. Haroutun Hovanesian, M.D.Ophthalmology Physician1154341626
  6. Megan Quan, ODOptometrist1013624634

Verify Katherine 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 A136608    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

84% fewer Medicare Part D claims than the average ophthalmology physician in 2024

237 Medicare Part D claims for 80 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.

  1. Katherine Chen237
  2. Specialty average1,518

Most prescribed

  1. Prednisolone Acetate52 claims
  2. Moxifloxacin37 claims
  3. Ketorolac Tromethamine36 claims
  4. Latanoprost19 claims
  5. Timolol Maleate17 claims
  6. Erythromycin14 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.

Industry payments in 2024: $23.92

1 payment: food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katherine Chen$23.92
  2. Specialty average$4,535.02

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

Ophthalmology Physician providers in California

There are 2,899 ophthalmology physician records in California.

All 2,899 in California → Every provider in Glendale →

Other ophthalmology physician records in California

  1. Sam Abbassi, MD, MSWest Hills, CA1881937720
  2. Richard Abbott, M.D.San Francisco, CA1346276573
  3. Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
  4. Nizar Abdelfattah, MDPasadena, CA1801359393
  5. Parastou Abedi, MDAliso Viejo, CA1720067333
  6. Shahla Abedi, MDAliso Viejo, CA1467431072
  7. Lilit Ablabutyan, M.D.Glendale, CA1497013064
  8. Nathan Abraham, M.D.Valencia, CA1306224456
  9. James Abrams, M.D.San Bruno, CA1912903329
  10. Adam Abroms, MDWestlake Village, CA1497743702

Common questions

What is Katherine Chen's NPI number?

Katherine Chen's National Provider Identifier (NPI) is 1053638726, issued on Apr 21, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Chen located?

The NPPES record lists a practice address at 409 N Central Ave, Glendale, CA, 91203. Phone: (818) 265-7777. Providers update this record themselves, so call before visiting.

How can I verify Katherine Chen's license?

NPPES lists California license number A136608, 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 Katherine Chen prescribe under Medicare Part D?

In 2024, Katherine Chen had 237 Medicare Part D claims for 80 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.