Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cathy Cassube Underhill, ARNP

Family Nurse Practitioner in Trenton, FL · enumerated 2010.

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

National Provider Identifier

1437468147

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Registry record

Entity type Individual (Type 1)

Name Cathy Cassube Underhill

Credential ARNP

Sex Female

Practice address 911 S Main St, Trenton, FL, 32693

Phone (352) 463-2374

Fax (352) 463-4507

Enumeration date Sep 29, 2010

Last updated in NPPES Sep 8, 2011

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License ARNP2047432 (FL) Primary

Other identifiers

Identifier	Type	State	Issuer
02783600	Medicaid	FL	-
81528	Other	FL	BCBS
EC338Z	Other	FL	MEDICARE PTAN

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

Where does Cathy Underhill practice?

The practice location on file with NPPES is in Trenton, FL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Cathy Underhill?

The National Provider Identifier (NPI) for Cathy Underhill is 1437468147, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-08.