Psychiatrist | 25+ years experience

Dr. Troy R. Stiles, D.O.

820 Division St, Billings, Montana, 59101-2049

About Dr. Troy R. Stiles

Dr. Troy R. Stiles is a psychiatrist based in Billings, Montana with 25 years of experience in Psychiatry. He completed his graduation from Midwestern University, Chicago College Of Osteopathic Med in 2001. He is also affiliated with hospitals like He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Troy R. Stiles is 12326 for Psychiatry in Montana. His current practice location is 820 Division St, Billings. Patients can contact him at 406-294-5225 or can fax him at 406-294-5226. Dr. Troy R. Stiles, D.O., specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1437122207.

Dr. Troy R. Stiles 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.

Practice Information

Dr. Troy R. Stiles's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Troy R. Stiles
Specialization Psychiatry
Credentials D.O.
Accepts Medicare Assignment Yes
Experience 25+ years
Medical School Attended Midwestern University, Chicago College Of Osteopathic Med
Graduation Year 2001
Gender Male
Practice Address: 820 Division St,
Billings, MT - 59101-2049
Fax 406-294-5226

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

PAC ID 4789700881
Enrollment ID I20100927000613
NPI Number1437122207
NPI Enumeration Date: 10 Feb, 2006
NPI Last Update On: 01 Apr, 2013

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. Troy R. Stiles are as mentioned below.

License NumberSpecializationStateStatus
12326Psychiatry MontanaPrimary
02002661APsychiatry IndianaSecondary

Hospital Affiliation

Doctors are affiliated to many hospitals whom they worked with in the past or are presently working with. One doctor can be affiliated to four to five hospitals at a time.
Hospital Name (CCN) StateHospital Type
(270004)Billings, MTAcute Care Hospital

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which Dr. Troy R. Stiles is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Big Sky Psychiatric Services Pc (4981720083)3

Other Medical Identifiers

Other professional identifiers associated with Dr. Troy R. Stiles such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
P00915579OtherMontanaRAILROAD MEDICARE
1437122207MedicaidMontana

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Troy R. Stiles
Po Box 21457,
Billings, MT - 59104-1457
Phone: 406-294-5225
Fax: 406-294-5226

Book an Appointment with Dr. Troy R. Stiles

To schedule an appointment, contact Dr. Troy R. Stiles at 820 Division St, Billings, Montana or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Troy R. Stiles:

Dr. Troy R. Stiles is a psychiatrist specializing in Psychiatry. He 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.

Dr. Troy R. Stiles completed his education (D.O.) from Midwestern University, Chicago College Of Osteopathic Med in 2001.

Dr. Troy R. Stiles has approximately 25 years of experience in Psychiatry.

Yes, Dr. Troy R. Stiles accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Troy R. Stiles is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. Troy R. Stiles practices at 820 Division St, Billings, Montana, 59101-2049.

To schedule an appointment with Dr. Troy R. Stiles, please contact the office at 406-294-5225.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.