Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Ruth Elisabeth Guttormsen, RN

Psychiatric/Mental Health Registered Nurse in Stockbridge, MA · enumerated 2007 · practices at Austen Riggs Center Iop LLC.

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

National Provider Identifier

1164625570

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Registry record

Entity type Individual (Type 1)

Name Ms. Ruth Elisabeth Guttormsen

Credential RN

Sex Female

Practice address 25 Main St., Stockbridge, MA, 01262

Phone (413) 298-5519

Enumeration date Jun 6, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 240903 (MA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

What is the NPI number for Ruth Guttormsen?

The National Provider Identifier (NPI) for Ruth Guttormsen is 1164625570, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ruth Guttormsen practice?

The practice location on file with NPPES is in Stockbridge, MA. 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 2007-07-08.