NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katrina L Colby, APRN

Family Nurse Practitioner in Whitefield, NH · enumerated 2020.

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

National Provider Identifier

1578178489

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Katrina L Colby
Credential APRN
Sex Female
Practice address 14 King Sq, Whitefield, NH, 03598
Enumeration date Sep 9, 2020
Last updated in NPPES Jan 20, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 053246-23 (NH) 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

Where does Katrina Colby practice?
The practice location on file with NPPES is in Whitefield, NH. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Katrina Colby?
The National Provider Identifier (NPI) for Katrina Colby is 1578178489, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-20.