Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark David De St. Aubin, LCSW, CT

Clinical Social Worker in Salt Lake City, UT · enumerated 2011.

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

National Provider Identifier

1861798142

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark David De St. Aubin

Credential LCSW, CT

Sex Male

Practice address 5005 S 900 E Ste 120, Salt Lake City, UT, 84117

Phone (801) 891-3137

Enumeration date Feb 3, 2011

Last updated in NPPES Feb 3, 2011

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 133556-3501 (UT) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

How do I verify Mark De St. Aubin's NPI record?

Cross-check NPI 1861798142 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861798142 active?

Yes, as of the latest NPPES snapshot, NPI 1861798142 is active (record last updated 2011-02-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-03.