NPPES file of Aug 9, 2026

Warren J. Xie

Low Vision Rehabilitation Optometrist · Monterey Park, CA

Warren J. Xie is a low vision rehabilitation optometrist with a practice address in Monterey Park, California, and NPI 1841871704, issued on Apr 20, 2021. Check the license (California 35186-TLG, 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
1841871704
Name
Warren J. Xie
Primary taxonomy
Low Vision Rehabilitation Optometrist 152WL0500X
License number
35186-TLG CA
Self-reported in NPPES; status is on the state search
Practice location
120 W Hellman Ave Ste 302, Monterey Park, CA 91754
Phone
(626) 299-2020
Enumerated
Apr 20, 2021
Record last updated
Oct 25, 2024
Medicare enrollment
Enrolled (PECOS I20240708001095); accepts Medicare assignment
Medical or professional school
Southern California College Of Optometry, 2022
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 120 W Hellman Ave Ste 302

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

  1. Amber HoangCornea and External Diseases Specialist Physician1184087322
  2. Cindy TangOptometrist1306532874

Verify Warren J. Xie 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 35186-TLG
    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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19% more Medicare Part D claims than the average low vision rehabilitation optometrist in 2024

319 Medicare Part D claims for 103 beneficiaries, against an average of 268 among the 86 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.

  1. Warren Xie319
  2. Specialty average268

Most prescribed

  1. Azelastine Hcl81 claims
  2. Latanoprost74 claims
  3. Brimonidine Tartrate29 claims
  4. Dorzolamide-Timolol18 claims
  5. Restasis13 claims
  6. Timolol Maleate13 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. Southern California Permanente Medical GroupSan Dimas, CA

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

Warren J. Xie among 53 low vision rehabilitation optometrist records in California

Warren J. Xie is one of 53 low vision rehabilitation optometrist records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.

  • NPI issued2021 · 92% of these records are older, 2% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated2022 · median 1996 among the 27 with a school on file
  • Record last updated2024 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152WL0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Low Vision Rehabilitation Optometrist providers in California

There are 53 low vision rehabilitation optometrist records in California.

The 8 low vision rehabilitation optometrist records with the nearest ZIP codes

  1. Shirley Hong, O.D.Rowland Heights, CA 917481952311938
  2. Briza Brooks, ODPomona, CA 917661790489896
  3. Dana Rawlings, O.D.West Covina, CA 917901104008382
  4. Wayne Hoeft, O.D.Burbank, CA 915041801851571
  5. Lisa Limtiaco, O.D.Encino, CA 914361902813330
  6. Thao Tran, O.D.Vista, CA 920841962581421
  7. Marsha Vinson, O.D.Panorama City, CA 914021477592939
  8. Michael Huang, OD,MSSan Diego, CA 921081548210883

Common questions

What is Warren J. Xie's NPI number?

Warren J. Xie's National Provider Identifier (NPI) is 1841871704, issued on Apr 20, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Warren J. Xie located?

The NPPES record lists a practice address at 120 W Hellman Ave Ste 302, Monterey Park, CA, 91754. Phone: (626) 299-2020. Providers update this record themselves, so call before visiting.

How can I verify Warren J. Xie's license?

NPPES lists California license number 35186-TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Warren J. Xie prescribe under Medicare Part D?

In 2024, Warren J. Xie had 319 Medicare Part D claims for 103 beneficiaries; the average among low vision rehabilitation optometrist prescribers was 268. 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.