Tam-An Nguyen, O.D.
Optometrist · Placerville, CA
Tam-An Nguyen, O.D. is an optometrist with a practice address in Placerville, California, and NPI 1114126927, issued on Jul 12, 2007. Check the license (California 13315, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tam-An Nguyen
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 13315 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4212 Missouri Flat RD, Placerville, CA 95667
- Phone
- (530) 621-7700
- Enumerated
- Jul 12, 2007
- Record last updated
- Oct 26, 2025
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 4212 Missouri Flat RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Geri Austin, BSN RNRegistered Nurse1114840485
- Talvinder BainsPharmacist1194122036
Verify Tam-An Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 13315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average optometrist in 2024
40 Medicare Part D claims for 19 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Latanoprost14 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.
Tam-An Nguyen among 8,308 optometrist records in California
Tam-An Nguyen, 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 updated2025 · 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 Placerville → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Corydon Edgecomb, ODPlacerville, CA 956671558382986
- Harry Green, O.D.Placerville, CA 956671013172477
- Shawn McDonald, ODPlacerville, CA 956671710037445
- Brett Perkins, O.D.Placerville, CA 956671487725032
- Loren Polte, ODPlacerville, CA 956671508850132
- William Stacy, O.D.Placerville, CA 956671750424461
- Yu-Tai Wu, ODPlacerville, CA 956671568725562
- Michael Zirhut, O.D.Placerville, CA 956671952394900
Common questions
What is Tam-An Nguyen, O.D.'s NPI number?
Tam-An Nguyen, O.D.'s National Provider Identifier (NPI) is 1114126927, issued on Jul 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tam-An Nguyen, O.D. located?
The NPPES record lists a practice address at 4212 Missouri Flat RD, Placerville, CA, 95667. Phone: (530) 621-7700. Providers update this record themselves, so call before visiting.
How can I verify Tam-An Nguyen, O.D.'s license?
NPPES lists California license number 13315, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tam-An Nguyen, O.D. prescribe under Medicare Part D?
In 2024, Tam-An Nguyen, O.D. had 40 Medicare Part D claims for 19 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.