Gregory Scott Wingren, O.D.
Optometrist · Napa, CA
Gregory Scott Wingren, O.D. is an optometrist with a practice address in Napa, California, and NPI 1164857140, issued on Sep 9, 2013. Check the license (California 14767, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Scott Wingren
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 14767 CA
Self-reported in NPPES; status is on the state search - Practice location
- 895 Trancas St, Napa, CA 94558
- Phone
- (707) 252-2020
- Enumerated
- Sep 9, 2013
- Record last updated
- Feb 24, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (707) 252-0329
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 895 Trancas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patrick Casey, ODOptometrist1518963222
- Michelle Kerr, O.D.Optometrist1881774164
- David Kim, M.D.Ophthalmology Physician1558568634
- Allan Ringard, DDSDentist1821148412
- Paul Row, M.D.Ophthalmology Physician1548345580
- Joelle Zarzana, O.D.Optometrist1386794170
Verify Gregory Scott Wingren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 14767Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average optometrist in 2024
37 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.
Most prescribed
- Timolol Maleate15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Gregory Scott Wingren among 8,308 optometrist records in California
Gregory Scott Wingren, 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 2013, is newer than 66% of them.
- NPI issued2013 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2014 · 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 Napa → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Elizabeth Agbuya, O.D.Napa, CA 945581104350651
- Gregg Beach, O.D.Napa, CA 945581295705010
- Patrick Casey, ODNapa, CA 945581518963222
- Tempus Fugit, O.D.Napa, CA 945581962472795
- Loukia Hadjiyianni, ODNapa, CA 945581083287015
- Jared Hayashi, O.D.Napa, CA 945581598171027
- Samuel Herbert, O.D.Napa, CA 945581023396355
- Michelle Kerr, O.D.Napa, CA 945581881774164
Common questions
What is Gregory Scott Wingren, O.D.'s NPI number?
Gregory Scott Wingren, O.D.'s National Provider Identifier (NPI) is 1164857140, issued on Sep 9, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Scott Wingren, O.D. located?
The NPPES record lists a practice address at 895 Trancas St, Napa, CA, 94558. Phone: (707) 252-2020. Providers update this record themselves, so call before visiting.
How can I verify Gregory Scott Wingren, O.D.'s license?
NPPES lists California license number 14767, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Scott Wingren, O.D. prescribe under Medicare Part D?
In 2024, Gregory Scott Wingren, O.D. had 37 Medicare Part D claims for 16 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Gregory Scott Wingren, O.D.'s MIPS final score?
The 2023 MIPS final score is 82.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.