Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Erin Garthwaite, RN

Addiction (Substance Use Disorder) Registered Nurse in South Portland, ME · enumerated 2023 · practices at Center for Behavioral Health Me, Inc..

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

National Provider Identifier

1093592818

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Registry record

Entity type Individual (Type 1)

Name Erin Garthwaite

Credential RN

Sex Female

Practice address 400 Western Ave, South Portland, ME, 04106

Phone (207) 774-7111

Enumeration date Sep 14, 2023

Last updated in NPPES Sep 14, 2023

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License RN84877 (ME) 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 specialty is Erin Garthwaite?

Erin Garthwaite is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Registered Nurse. 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 2023-09-14.