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Mr. Mark Dalton Ellis, LMSW

Clinical Social Worker in Twin Falls, ID · enumerated 2012 · practices at Lds Family Services.

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

National Provider Identifier

1336401710

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Registry record

Entity type Individual (Type 1)
Name Mr. Mark Dalton Ellis
Credential LMSW
Sex Male
Practice address 1418 Fillmore St, Twin Falls, ID, 83301
Phone (208) 735-2237
Enumeration date Jun 12, 2012
Last updated in NPPES Dec 4, 2013

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW-32484 (ID) Primary

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

What specialty is Mark Ellis?
Mark Ellis is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-04.