Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Claire Ellerbrock, APRN

Psychiatric/Mental Health Nurse Practitioner in Mansfield Center, CT · enumerated 2017 · practices at Natchaug Hospital.

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

National Provider Identifier

1669995544

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Registry record

Entity type Individual (Type 1)

Name Mrs. Claire Ellerbrock

Credential APRN

Sex Female

Practice address 189 Storrs Rd, Mansfield Center, CT, 06250

Phone (860) 456-1311

Fax (860) 450-0165

Enumeration date Jul 21, 2017

Last updated in NPPES Jul 25, 2021

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 416083 (OH) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 7967 (CT) Secondary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APRN.CNP.022357 (OH) Primary

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

How do I verify Claire Ellerbrock's NPI record?

Cross-check NPI 1669995544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669995544 active?

Yes, as of the latest NPPES snapshot, NPI 1669995544 is active (record last updated 2021-07-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-25.