Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Winselman, OD

Optometrist in Hastings, MN · enumerated 2022.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1790409589

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Registry record

Entity type Individual (Type 1)

Name Dr. William Winselman

Credential OD

Sex Male

Practice address 1880 N Frontage Rd, Hastings, MN, 55033

Phone (651) 438-1800

Enumeration date Sep 27, 2022

Last updated in NPPES Aug 16, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License T009609-01 (NY) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 3846 (MN) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1790409589 active?

Yes, as of the latest NPPES snapshot, NPI 1790409589 is active (record last updated 2023-08-16).

How do I verify William Winselman's NPI record?

Cross-check NPI 1790409589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Kristen Gilleo Family Nurse Practitioner · Hastings, MN NPI 1598766677 Andrea Urbach Optometrist · Hastings, MN NPI 1841289642 Tricia Ische Physician Assistant · Hastings, MN NPI 1861479693 Melody Mckenzie Family Medicine Physician · Hastings, MN NPI 1437119039 Diana Bussey Family Medicine Physician · Hastings, MN NPI 1801845938 Christine Gendreau Acupuncturist · Hastings, MN NPI 1164677894 Allina Health System Family Medicine Physician · Hastings, MN NPI 1841596665 Katie Freeman Orthopaedic Surgery Physician · Hastings, MN NPI 1770849937

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-16.