Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Caitlin Elise-Nosanov Winsor, OD
Optometrist in Hastings, MI · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770195794
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Registry record
Entity type Individual (Type 1)
Name Caitlin Elise-Nosanov Winsor
Credential OD
Sex Female
Practice address 1761 W M 43 Hwy Ste 1, Hastings, MI, 49058
Phone (269) 945-3888
Fax (269) 945-2112
Enumeration date Aug 20, 2020
Last updated in NPPES Aug 20, 2020
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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 specialty is Caitlin Winsor?
Caitlin Winsor is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-20.