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Dr. Troy R. Stiles, D.O.

Psychiatry Physician in Billings, MT · enumerated 2006.

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

National Provider Identifier

1437122207

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Registry record

Entity type Individual (Type 1)
Name Dr. Troy R. Stiles
Credential D.O.
Sex Male
Practice address 820 Division St, Billings, MT, 59101
Phone (406) 294-5225
Fax (406) 294-5226
Enumeration date Feb 10, 2006
Last updated in NPPES Apr 1, 2013

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 02002661A (IN) Secondary
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 12326 (MT) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
P00915579 Other MT RAILROAD MEDICARE
1437122207 Medicaid MT -

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 Troy Stiles practice?
The practice location on file with NPPES is in Billings, MT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Troy Stiles?
The National Provider Identifier (NPI) for Troy Stiles is 1437122207, 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 2013-04-01.