Rosanna T. Nguyen, O.D.
Optometrist · Valencia, CA
Rosanna T. Nguyen, O.D. is an optometrist with a practice address in Valencia, California, and NPI 1043574742, issued on Jun 27, 2012. Check the license (California 14398, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rosanna T. Nguyen
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 14398 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27420 Tourney RD Ste 100, Valencia, CA 91355
- Phone
- (661) 259-3937
- Enumerated
- Jun 27, 2012
- Record last updated
- Jan 31, 2024
- Fax
- (661) 259-3904
- Medicare enrollment
- Enrolled (PECOS I20240219003404); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2012
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 27420 Tourney RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Benosa, O.D.Optometrist1265868723
- Pelin Celiker, M.D.Ophthalmology Physician1598405847
- Talisa Chhabra, ODOptometrist1841019734
- Sara Janami, ODOptometrist1427820828
- Jing Jia, MDOphthalmology Physician1093384034
- Brian Nguyen, MDOphthalmology Physician1912469792
Verify Rosanna T. 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 14398Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average optometrist in 2024
104 Medicare Part D claims for 69 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth17 claims
- Erythromycin14 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: $142.94
6 payments; by number, the most common kind was food and beverage; the largest payer was CooperVision 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.
Bills Medicare through one group practice
- Craig Helm M D A Professional CorporationValencia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rosanna T. Nguyen among 8,308 optometrist records in California
Rosanna T. 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 2012, is newer than 64% of them.
- NPI issued2012 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2012 · median 2008 among the 3,573 with a school on file
- Record last updated2024 · 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).
27 optometrist records list a practice address in Valencia
They are 27 of the 2,083 NPPES records with a practice address in Valencia, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Valencia → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Carol Aivazian, O.D.Valencia, CA 913551164594362
- Edmond Betmaleck, O.D.Valencia, CA 913551700934460
- Ann Kim, O.D.Valencia, CA 913551366592933
- Neil McClenaghan, O.D.Valencia, CA 913551487783007
- Carol Mikhail, O.D.Valencia, CA 913551285727263
- Vu Nguyen, O.D.Valencia, CA 913551023161759
- Mai Nguyen, O.D.Valencia, CA 913551619011061
- John Parillo, ODValencia, CA 913551639246069
Common questions
What is Rosanna T. Nguyen, O.D.'s NPI number?
Rosanna T. Nguyen, O.D.'s National Provider Identifier (NPI) is 1043574742, issued on Jun 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Rosanna T. Nguyen, O.D. located?
The NPPES record lists a practice address at 27420 Tourney RD Ste 100, Valencia, CA, 91355. Phone: (661) 259-3937. Providers update this record themselves, so call before visiting.
How can I verify Rosanna T. Nguyen, O.D.'s license?
NPPES lists California license number 14398, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Rosanna T. Nguyen, O.D. prescribe under Medicare Part D?
In 2024, Rosanna T. Nguyen, O.D. had 104 Medicare Part D claims for 69 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.