Thu Ai Phan, OD
Optometrist · Fullerton, CA
Thu Ai Phan, OD is an optometrist with a practice address in Fullerton, California, and NPI 1679172142, issued on Oct 25, 2020. Check the license (California 34712, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Thu Ai Phan
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 34712 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1909 W Malvern Ave, Fullerton, CA 92833
- Phone
- (714) 992-8020
- Enumerated
- Oct 25, 2020
- Record last updated
- Oct 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210505001329); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 2020
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1909 W Malvern Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alvin Arellano, O.D.Optometrist1538155932
- Chris Hsieh, ODOptometrist1114553518
- Gewon Shu, O.D.Optometrist1982013843
Verify Thu Ai Phan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 34712Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $569.81
8 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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.
Bills Medicare through one group practice
- Alvin Arellano OD IncFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thu Ai Phan among 8,308 optometrist records in California
Thu Ai Phan, 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 2020, is newer than 84% of them.
- NPI issued2020 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2020 · 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).
84 optometrist records list a practice address in Fullerton
They are 84 of the 5,437 NPPES records with a practice address in Fullerton, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Fullerton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Vernon Agarth, O.D.Fullerton, CA 928331477618148
- Alvin Arellano, O.D.Fullerton, CA 928331538155932
- Steven Chiana, O.D.Fullerton, CA 928331780622589
- Maria Choi, OPTOMETRY STUDENTFullerton, CA 928331962784314
- Chris Hsieh, ODFullerton, CA 928331114553518
- Tricia Kawaguchi, O.D.Fullerton, CA 928331962530709
- Maryam Khatami, ODFullerton, CA 928331528841210
- Sung Kim, O.D.Fullerton, CA 928331598814436
Common questions
What is Thu Ai Phan, OD's NPI number?
Thu Ai Phan, OD's National Provider Identifier (NPI) is 1679172142, issued on Oct 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Thu Ai Phan, OD located?
The NPPES record lists a practice address at 1909 W Malvern Ave, Fullerton, CA, 92833. Phone: (714) 992-8020. Providers update this record themselves, so call before visiting.
How can I verify Thu Ai Phan, OD's license?
NPPES lists California license number 34712, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.