Thao Pham-Diaz, O.D.
Optometrist · Riverside, CA
Thao Pham-Diaz, O.D. is an optometrist with a practice address in Riverside, California, and NPI 1346378114, issued on Mar 1, 2007. Check the license (California 11729T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thao Pham-Diaz
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 11729T CA
11729 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6160 Arlington Ave Ste C1, Riverside, CA 92504
- Phone
- (951) 977-8635
- Enumerated
- Mar 1, 2007
- Record last updated
- Jan 5, 2022
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 6160 Arlington Ave Ste C1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Krista SotoOptometrist1679403844
Verify Thao Pham-Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 11729TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average optometrist in 2024
73 Medicare Part D claims for 21 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Latanoprost26 claims
- Restasis13 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.
Thao Pham-Diaz among 8,308 optometrist records in California
Thao Pham-Diaz, 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 fileNo · 43% of these records are
- 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.
All 8,308 in California → Every provider in Riverside → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Ahmad Ahmadzada, ODRiverside, CA 925041285478834
- Franchesca ChanRiverside, CA 925041487328407
- Cheryl Everitt, O.D.Riverside, CA 925041164579918
- Vanessa Kashak, O.D.Riverside, CA 925041639404189
- Mallory Kennedy, O.D.Riverside, CA 925041538511837
- Scott Nguyen, ODRiverside, CA 925041427721661
- Lubna OzaRiverside, CA 925041780286468
- Pritesh Patel, O.D.Riverside, CA 925041679020283
Common questions
What is Thao Pham-Diaz, O.D.'s NPI number?
Thao Pham-Diaz, O.D.'s National Provider Identifier (NPI) is 1346378114, issued on Mar 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thao Pham-Diaz, O.D. located?
The NPPES record lists a practice address at 6160 Arlington Ave Ste C1, Riverside, CA, 92504. Phone: (951) 977-8635. Providers update this record themselves, so call before visiting.
How can I verify Thao Pham-Diaz, O.D.'s license?
NPPES lists California license number 11729T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Thao Pham-Diaz, O.D. prescribe under Medicare Part D?
In 2024, Thao Pham-Diaz, O.D. had 73 Medicare Part D claims for 21 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.