Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eileen Hanrahan, APRN

Psychiatric/Mental Health Nurse Practitioner in Willimantic, CT · enumerated 2007 · practices at United Services.

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

National Provider Identifier

1851571244

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Registry record

Entity type Individual (Type 1)

Name Eileen Hanrahan

Credential APRN

Sex Female

Practice address 132 Mansfield Ave, Willimantic, CT, 06226

Phone (860) 456-2661

Enumeration date Nov 14, 2007

Last updated in NPPES Mar 21, 2011

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 003105 (CT) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
003105	Other	CT	CT LICENSE FOR APRN

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 Eileen Hanrahan's NPI record?

Cross-check NPI 1851571244 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851571244 active?

Yes, as of the latest NPPES snapshot, NPI 1851571244 is active (record last updated 2011-03-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-21.