NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Ernest Thomas Williams Jr., O.D.

Optometrist in Hibbing, MN · enumerated 2005.

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

National Provider Identifier

1255331427

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Registry record

Entity type Individual (Type 1)
Name Dr. Ernest Thomas Williams Jr.
Credential O.D.
Sex Male
Practice address Hibbing, MN, 55746
Fax (218) 263-6938
Enumeration date Jul 28, 2005
Last updated in NPPES Apr 2, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1568 (MN) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
2111187 Other MN MEDICA EYEGLASSES
4C990WI Other MN BC/BS EYEGLASS & CL
61443WI Other MN BLUE CROSS/BLUE SHIELD
914323800 Medicaid MN -
170174 Other MN UCARE
2200989 Other MN MEDICA
N005453 Other MN CHAMPUS
01009882 Other MN PREFERRED ONE
0313870001 Other MN D MERC
111185 Other MN UCARE EYEGLASSES

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.

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Frequently asked questions

Is NPI 1255331427 active?
Yes, as of the latest NPPES snapshot, NPI 1255331427 is active (record last updated 2013-04-02).
How do I verify Ernest Williams's NPI record?
Cross-check NPI 1255331427 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-02.