Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Ellis, DDS

Dentist in Cass Lake, MN · enumerated 2009.

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

National Provider Identifier

1154655082

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Registry record

Entity type Individual (Type 1)

Name Mark A Ellis

Credential DDS

Sex Male

Practice address 425 7th St Nw, Cass Lake, MN, 56633

Phone (218) 335-3230

Enumeration date Sep 24, 2009

Last updated in NPPES Oct 26, 2009

Taxonomy & licenses

122300000X Dentist Dental Providers · License 0025030 (TX) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

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Frequently asked questions

How do I verify Mark Ellis's NPI record?

Cross-check NPI 1154655082 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154655082 active?

Yes, as of the latest NPPES snapshot, NPI 1154655082 is active (record last updated 2009-10-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-26.