NPPES file of Aug 9, 2026

Stephen Masayuki Uno, O.D.

Optometrist · Fairfield, CA

Stephen Masayuki Uno, O.D. is an optometrist with a practice address in Fairfield, California, and NPI 1295882942, issued on Jan 4, 2007. Check the license (California OPT 8608 TPA, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295882942
Name
Stephen Masayuki Uno
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OPT 8608 TPA CA
Self-reported in NPPES; status is on the state search
Practice location
1550 Gateway Blvd, Fairfield, CA 94533
Phone
(707) 427-4040
Enumerated
Jan 4, 2007
Record last updated
Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20060125000186); accepts Medicare assignment
Medical or professional school
University Of California - School Of Optometry, 1986
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest optometrist records → All 8,308 in California → Look up another NPI →

Also registered at 1550 Gateway Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Folasade Adesina, PHARM DPharmacist1457883761
  2. Syamala Aiyar, MDPediatrics Physician1760560593
  3. Ruthan Arca, RPHPharmacist1437680162
  4. Irwin Barr, MDInternal Medicine Physician1659450799
  5. Marissa Bartlett, MDPediatrics Physician1659443489
  6. Jaime Betters, R.D.Registered Dietitian1861559460

Verify Stephen Masayuki Uno in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license OPT 8608 TPA    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Permanente Medical Group IncSanta Clara, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephen Masayuki Uno among 8,308 optometrist records in California

Stephen Masayuki Uno, 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 fileYes · 43% of these records are
  • Graduated1986 · median 2008 among the 3,573 with a school on file
  • Record last updated2021 · 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 Fairfield → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. Cinthia Chan, O.D.Fairfield, CA 945331962533273
  2. Michael Chin, O.D.Fairfield, CA 945331962569665
  3. Mark Christensen, O.D.Fairfield, CA 945331518038108
  4. Rozanne Fratto, O.D.Fairfield, CA 945331174688055
  5. Cory Hakanen, O.D.Fairfield, CA 945331265831564
  6. Arlene Huynh, O.D.Fairfield, CA 945331912254582
  7. David Meltzer, O.D.Fairfield, CA 945331952454712
  8. Malalai Mojaddidi, ODFairfield, CA 945331427146273

Common questions

What is Stephen Masayuki Uno, O.D.'s NPI number?

Stephen Masayuki Uno, O.D.'s National Provider Identifier (NPI) is 1295882942, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Masayuki Uno, O.D. located?

The NPPES record lists a practice address at 1550 Gateway Blvd, Fairfield, CA, 94533. Phone: (707) 427-4040. Providers update this record themselves, so call before visiting.

How can I verify Stephen Masayuki Uno, O.D.'s license?

NPPES lists California license number OPT 8608 TPA, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.