Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Stuart R Winthrop MD Inc
Ophthalmology Physician in Santa Barbara, CA · enumerated 2007 · authorized official Stuart Winthrop, Owner.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548310634
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Registry record
Taxonomy & classification
Authorized official
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 539238 | Other | PA | BLUE CROSS BLUE SHIELD |
| 7003358 | Other | MD | MAMSI LIFE & HEALTH |
| 7102000CA | Other | MI | BLUE CROSS BLUE SHIELD |
| CA34164 | Other | NE | MUTUAL OF OMAHA |
| 0665290001 | Other | CA | AETNA |
| 4485 | Other | CA | MEDICAL EYE SERVICES |
| G34164 | Other | CA | BLUE CROSS |
| GR0067800 | Medicaid | CA | - |
| ZZZ42428Z | Other | CA | BLUE SHIELD |
| CD5255 | Other | CA | RR MEDICARE |
| 000009998 | Other | TX | BLUE CROSS BLUE SHIELD |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is a Type 2 NPI?
What type of organization is Stuart R Winthrop MD Inc?
Providers at this address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-25.