NPPES file of Aug 9, 2026

Aileen Chang, O.D.

Optometrist · Sunnyvale, CA

Aileen Chang, O.D. is an optometrist with a practice address in Sunnyvale, California, and NPI 1356781785, issued on Jun 30, 2013. Check the license (California 14626TLG, 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
1356781785
Name
Aileen Chang
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
14626TLG CA
TUV007978 NY
Self-reported in NPPES; status is on the state search
Practice location
1085 W EL Camino Real, Sunnyvale, CA 94087
Phone
(408) 524-5900
Enumerated
Jun 30, 2013
Record last updated
Feb 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160516000738); accepts Medicare assignment
Medical or professional school
Southern California College Of Optometry, 2013
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 1085 W EL Camino Real

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

  1. Tayyeba Ali, M.D.Ophthalmology Physician1891947925
  2. Amie Chien, PT, DPTPhysical Therapist1073242624
  3. Tasha Connolly, PTPhysical Therapist1225672777
  4. Paolo Cordero, AUDAudiologist1760096168
  5. Carly Crompton, PT, DPTPhysical Therapist1215542667
  6. Karen Gray, PTPhysical Therapist1568933786

Verify Aileen Chang 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 14626TLG
    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
Find 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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70% more Medicare Part D claims than the average optometrist in 2024

471 Medicare Part D claims for 120 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of claims.

  1. Aileen Chang471
  2. Specialty average277

Most prescribed

  1. Latanoprost247 claims
  2. Timolol Maleate42 claims
  3. Lumigan40 claims
  4. Dorzolamide Hcl19 claims
  5. Restasis18 claims
  6. Dorzolamide-Timolol17 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: $407.61

3 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Aileen Chang$407.61
  2. Specialty average$769.99

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. Sutter Bay Medical FoundationSunnyvale, CA

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

Aileen Chang among 8,308 optometrist records in California

Aileen Chang, 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 2013, is newer than 66% of them.

  • NPI issued2013 · 66% of these records are older, 32% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated2013 · median 2008 among the 3,573 with a school on file
  • Record last updated2020 · 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).

43 optometrist records list a practice address in Sunnyvale

They are 43 of the 1,690 NPPES records with a practice address in Sunnyvale, and 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. Vanessa Hoang, O.D.Sunnyvale, CA 940871801821202
  2. Vaughn Hoglan, O.D.Sunnyvale, CA 940871154547727
  3. Jeffrey Holbert, O.D.Sunnyvale, CA 940871023352176
  4. Mark Ichikawa, O.D.Sunnyvale, CA 940871285665992
  5. Jesley Johnson, O.D.Sunnyvale, CA 940871265792253
  6. Yeun Hwa Lee, ODSunnyvale, CA 940871780918094
  7. Lorina Leung, O.D.Sunnyvale, CA 940871669666533
  8. Moshe Mendelson, O.D.Sunnyvale, CA 940871366443277

Common questions

What is Aileen Chang, O.D.'s NPI number?

Aileen Chang, O.D.'s National Provider Identifier (NPI) is 1356781785, issued on Jun 30, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Aileen Chang, O.D. located?

The NPPES record lists a practice address at 1085 W EL Camino Real, Sunnyvale, CA, 94087. Phone: (408) 524-5900. Providers update this record themselves, so call before visiting.

How can I verify Aileen Chang, O.D.'s license?

NPPES lists California license number 14626TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Aileen Chang, O.D. prescribe under Medicare Part D?

In 2024, Aileen Chang, O.D. had 471 Medicare Part D claims for 120 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.