Tammy Nguyen, O.D.
Optometrist · San Jose, CA
Tammy Nguyen, O.D. is an optometrist with a practice address in San Jose, California, and NPI 1053497172, issued on Oct 31, 2006. Check the license (California 11933T, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tammy Nguyen
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 11933T CA
Self-reported in NPPES; status is on the state search - Practice location
- 1818 Tully RD, San Jose, CA 95122
- Phone
- (408) 274-0998
- Enumerated
- Oct 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 274-2060
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 1818 Tully RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Henry Fok, O.D.Optometrist1629245014
Verify Tammy 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 11933TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average optometrist in 2024
49 Medicare Part D claims for 16 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Azelastine Hcl14 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.
Industry payments in 2024: $19.97
1 payment: 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.
Tammy Nguyen among 8,308 optometrist records in California
Tammy 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2007 · 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).
207 optometrist records list a practice address in San Jose
They are 207 of the 20,925 NPPES records with a practice address in San Jose, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in San Jose → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Jennifer Chang, O.D.San Jose, CA 951221841375227
- Donald Drenth, O.D.San Jose, CA 951221083779938
- James Eu, O.DSan Jose, CA 951221881729663
- My Guino-O, O.D.San Jose, CA 951221255496196
- Ban Huynh, O.D.San Jose, CA 951221598817082
- Steven Ja, ODSan Jose, CA 951221831107762
- Carl Kwong, ODSan Jose, CA 951221962463604
- Virginia Lee, O.D.San Jose, CA 951221699825216
Common questions
What is Tammy Nguyen, O.D.'s NPI number?
Tammy Nguyen, O.D.'s National Provider Identifier (NPI) is 1053497172, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tammy Nguyen, O.D. located?
The NPPES record lists a practice address at 1818 Tully RD, San Jose, CA, 95122. Phone: (408) 274-0998. Providers update this record themselves, so call before visiting.
How can I verify Tammy Nguyen, O.D.'s license?
NPPES lists California license number 11933T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Tammy Nguyen, O.D. prescribe under Medicare Part D?
In 2024, Tammy Nguyen, O.D. had 49 Medicare Part D claims for 16 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.