Stuart R. Winthrop, M.D.
Ophthalmology Physician · Santa Barbara, CA
Stuart R. Winthrop, M.D. is an ophthalmology physician with a practice address in Santa Barbara, California, and NPI 1356344485, issued on May 23, 2005. Check the license (California G34164, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stuart R. Winthrop
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G34164 CA
Self-reported in NPPES; status is on the state search - Practice location
- 515 E Micheltorena St, Santa Barbara, CA 93103
- Phone
- (805) 963-4272
- Enumerated
- May 23, 2005
- Record last updated
- Sep 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (805) 962-7342
- Medicaid ID
- 00G341640 CA
- Medicare enrollment
- Enrolled (PECOS I20110223000955); may accept Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1976
- Entity
- Type 1 · individual
Also registered at 515 E Micheltorena St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alan Neuenschwander, D.D.S.General Practice Dentistry1932409620
- Robert Poulin, M.D.Ophthalmology Physician1457461204
- Lawrence Westbury, D.D.S.Periodontics1265433627
Verify Stuart R. Winthrop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G34164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,571 Medicare Part D claims for 671 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Latanoprost1,422 claims
- Timolol Maleate555 claims
- Vyzulta194 claims
- Prednisolone Acetate183 claims
- Lumigan174 claims
- Brimonidine Tartrate145 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 MIPS final score for 2023 (Medicare payment program): 89 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $360.02
4 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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.
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Stuart R. Winthrop, M.D.'s NPI number?
Stuart R. Winthrop, M.D.'s National Provider Identifier (NPI) is 1356344485, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stuart R. Winthrop, M.D. located?
The NPPES record lists a practice address at 515 E Micheltorena St, Santa Barbara, CA, 93103. Phone: (805) 963-4272. Providers update this record themselves, so call before visiting.
How can I verify Stuart R. Winthrop, M.D.'s license?
NPPES lists California license number G34164, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stuart R. Winthrop, M.D. prescribe under Medicare Part D?
In 2024, Stuart R. Winthrop, M.D. had 3,571 Medicare Part D claims for 671 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Stuart R. Winthrop, M.D.'s MIPS final score?
The 2023 MIPS final score is 89 of 100. 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.