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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. David Simeon Costner, APRN NP-BC

Nurse Practitioner in Plains, MT · enumerated 2010 · practices at Costner Care Family Clinic, LLC.

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

National Provider Identifier

1346542867

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Registry record

Entity type Individual (Type 1)
Name Mr. David Simeon Costner
Credential APRN NP-BC
Sex Male
Practice address Plains, MT, 59859
Phone (406) 540-5757
Fax (833) 906-2418
Enumeration date Dec 4, 2010
Last updated in NPPES Apr 24, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NUR-APRN-LIC-102425 (MT) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 102425 (MT) Primary

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.

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Frequently asked questions

Where does David Costner practice?
The practice location on file with NPPES is in Plains, MT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for David Costner?
The National Provider Identifier (NPI) for David Costner is 1346542867, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-24.