Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathryn W Tierney, APRN

Family Nurse Practitioner in Middletown, CT · enumerated 2005 · practices at Middlesex Hospital Dba Middlesex Hospital Physician Services.

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

National Provider Identifier

1174526784

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Kathryn W Tierney

Credential APRN

Sex Female

Practice address 540 Saybrook Rd Ste 210, Middletown, CT, 06457

Phone (860) 358-6875

Fax (860) 358-8693

Enumeration date May 27, 2005

Last updated in NPPES Feb 4, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 002731 (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
004227171	Medicaid	CT	-

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 Kathryn Tierney's NPI record?

Cross-check NPI 1174526784 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1174526784 active?

Yes, as of the latest NPPES snapshot, NPI 1174526784 is active (record last updated 2026-02-04).

Other providers at this practice address

Browse all →

Christine Signore Endocrinology, Diabetes & Metabolism Physician · Middletown, CT NPI 1760538334 Supriya Kulkarni Endocrinology, Diabetes & Metabolism Physician · Middletown, CT NPI 1225309222 Karina Szczepanczyk Endocrinology, Diabetes & Metabolism Physician · Middletown, CT NPI 1386074292 Van Phan Endocrinology, Diabetes & Metabolism Physician · Middletown, CT NPI 1356845036 Middlesex Hospital Dba Middlesex Hospital Physician Services Endocrinology, Diabetes & Metabolism Physician · Middletown, CT NPI 1760940035

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-04.