Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Mary Ellen Linnihan, MA, LP

Psychologist in Grand Rapids, MN · enumerated 2006.

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

National Provider Identifier

1457446882

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Ellen Linnihan

Credential MA, LP

Sex Female

Practice address Grand Rapids, MN, 55744

Phone (218) 244-9414

Enumeration date Oct 3, 2006

Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License LP3192 (MN) Primary

Other identifiers

Identifier	Type	State	Issuer
460844500	Medicaid	MN	-
9H399LI	Other	MN	BCBS PROVIDER #

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

What is the NPI number for Mary Linnihan?

The National Provider Identifier (NPI) for Mary Linnihan is 1457446882, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Linnihan practice?

The practice location on file with NPPES is in Grand Rapids, MN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.