Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Frederick Schnell, M.D.

Specialist in Duluth, MN · enumerated 2005.

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

National Provider Identifier

1538164025

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Registry record

Entity type Individual (Type 1)

Name Dr. William Frederick Schnell

Credential M.D.

Sex Male

Practice address 1000 E 1st St, Ste 400, Duluth, MN, 55805

Phone (218) 722-5513

Fax (218) 722-6515

Enumeration date Jun 20, 2005

Last updated in NPPES Feb 26, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 31156 (MN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 1538164025 active?

Yes, as of the latest NPPES snapshot, NPI 1538164025 is active (record last updated 2010-02-26).

How do I verify William Schnell's NPI record?

Cross-check NPI 1538164025 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 2010-02-26.