Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Casey Ladd, LICSW

Clinical Social Worker in Duluth, MN · enumerated 2006.

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

National Provider Identifier

1548326937

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Registry record

Entity type Individual (Type 1)

Name Mary Casey Ladd

Credential LICSW

Sex Female

Practice address 1406 E 2nd St, Duluth, MN, 55805

Phone (218) 624-5683

Fax (218) 624-5736

Enumeration date Dec 29, 2006

Last updated in NPPES Sep 15, 2014

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 293 (MN) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 4937 (MN) Primary

Other identifiers

Identifier	Type	State	Issuer
081757100	Medicaid	MN	-

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 1548326937 active?

Yes, as of the latest NPPES snapshot, NPI 1548326937 is active (record last updated 2014-09-15).

How do I verify Mary Ladd's NPI record?

Cross-check NPI 1548326937 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 2014-09-15.