Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Christopher Castello, FNP

Nurse Practitioner in Cut Bank, MT · enumerated 2018.

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

National Provider Identifier

1801362199

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Registry record

Entity type Individual (Type 1)

Name Christopher Castello

Credential FNP

Sex Male

Practice address 802 2nd St Se, Cut Bank, MT, 59427

Phone (406) 873-2251

Fax (406) 873-3118

Enumeration date Oct 15, 2018

Last updated in NPPES Sep 29, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 132522 (MT) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71010342A (IN) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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

Is NPI 1801362199 active?

Yes, as of the latest NPPES snapshot, NPI 1801362199 is active (record last updated 2020-09-29).

How do I verify Christopher Castello's NPI record?

Cross-check NPI 1801362199 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-29.