William Chang, OD
Optometrist · San Gabriel, CA
William Chang, OD is an optometrist with a practice address in San Gabriel, California, and NPI 1629206834, issued on Jun 25, 2009. Check the license (California TLG13713, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Chang
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- TLG13713 CA
Self-reported in NPPES; status is on the state search - Practice location
- 417 S San Gabriel Blvd, San Gabriel, CA 91776
- Phone
- (626) 291-2020
- Enumerated
- Jun 25, 2009
- Record last updated
- Sep 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (626) 585-2905
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Verify William Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license TLG13713Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average optometrist in 2024
29 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of 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: $226.90
11 payments; by number, the most common kind was food and beverage; the largest payer was Johnson & Johnson Vision Care, 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Chang among 8,308 optometrist records in California
William Chang, OD 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 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2021 · 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).
30 optometrist records list a practice address in San Gabriel
They are 30 of the 762 NPPES records with a practice address in San Gabriel, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in San Gabriel → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Garry Chan, O.D.San Gabriel, CA 917761922216373
- Karen Chao, O.D.San Gabriel, CA 917761013953108
- Christine Chen, O.D.San Gabriel, CA 917761861709057
- Jennifer Chen, O.D.San Gabriel, CA 917761649570375
- Cindy Chou, O.D.San Gabriel, CA 917761982853537
- James Chung, O.D.San Gabriel, CA 917761194818518
- Jia Lao, O.D.San Gabriel, CA 917761598965568
- Lesfeena Lee, O.D.San Gabriel, CA 917761285777276
Common questions
What is William Chang, OD's NPI number?
William Chang, OD's National Provider Identifier (NPI) is 1629206834, issued on Jun 25, 2009. An NPI identifies a provider in billing; it is not a license.
Where is William Chang, OD located?
The NPPES record lists a practice address at 417 S San Gabriel Blvd, San Gabriel, CA, 91776. Phone: (626) 291-2020. Providers update this record themselves, so call before visiting.
How can I verify William Chang, OD's license?
NPPES lists California license number TLG13713, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Chang, OD prescribe under Medicare Part D?
In 2024, William Chang, OD had 29 Medicare Part D claims; 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.