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BIG SKY PSYCHIATRIC SERVICES PC
NPI 1124346986
Psychiatry & Neurology - Psychiatry in Billings, MT

Active since May 04, 2010
820 DIVISION ST, BILLINGS, MT 59101(406) 294-5225(406) 294-5226 Get Directions Write a Review

NPPES record last updated: December 9, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Big Sky Psychiatric Services Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

BIG SKY PSYCHIATRIC SERVICES PC (NPI 1124346986) is a healthcare organization registered as a psychiatry in Billings, Montana and active in the NPI registry since May 2010. The organization lists Troy R Stiles, Director, as its authorized official.

NPPES Registry Identity

NPI1124346986
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameBIG SKY PSYCHIATRIC SERVICES PC
Location Address820 DIVISION STBillings, MT 59101-2049
Mailing AddressPo Box 21457Billings, MT 59104-1457 · (406) 294-5225 · Fax (406) 294-5226
Phone(406) 294-5225
Fax(406) 294-5226
Organization SubpartNo
Authorized OfficialTroy R StilesDirector · (406) 294-5225
Enumeration DateMay 4, 2010
Last NPPES UpdateDecember 9, 2015
✔ NPI 1124346986 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MT · 12326
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
820 DIVISION ST, Billings, MT 59101
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Big Sky Psychiatric Services Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Big Sky Psychiatric Services PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Troy Stiles, D.O.
Psychiatry
NPI 1437122207
820 DIVISION ST
Billings, MT 59101
(406) 294-5225
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Big Sky Psychiatric Services PC's NPI number?

The NPI number for Big Sky Psychiatric Services PC is 1124346986. It was assigned to this organization in the NPPES registry on May 4, 2010.

Where is Big Sky Psychiatric Services PC located?

Big Sky Psychiatric Services PC is located at 820 Division St, Billings, MT 59101. The listed phone number is (406) 294-5225.

What is Big Sky Psychiatric Services PC's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Big Sky Psychiatric Services PC enrolled in Medicare?

Yes. Big Sky Psychiatric Services PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Big Sky Psychiatric Services PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Psychiatry) reassigns their Medicare billing to Big Sky Psychiatric Services PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Big Sky Psychiatric Services PC accept?

Health plans from Blue Cross and Blue Shield of Montana list Big Sky Psychiatric Services PC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Big Sky Psychiatric Services PC was last updated on December 9, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.