1. Home
  2. Directory
  3. Montana
  4. Billings
  5. Psychiatry Neurology
  6. NPI Profile

DR. TROY R. STILES D.O.
NPI 1437122207
Psychiatry & Neurology - Psychiatry in Billings, MT

Active since February 10, 2006PECOS EnrolledAccepts Medicare Assignment
820 DIVISION ST, BILLINGS, MT 59101(406) 294-5225(406) 294-5226 Get Directions Write a Review

NPPES record last updated: April 1, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Troy R. Stiles D.o. NPPES

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

DR. TROY R. STILES D.O. (NPI 1437122207) is an individual psychiatry provider in Billings, Montana, licensed in Montana (12326) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Billings Clinic, and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (2001).

NPPES Registry Identity

NPI1437122207
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. TROY R. STILESCredential: D.O.
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
Sole ProprietorNo
Medical School CMSMidwestern University, Chicago College Of Osteopathic MedGraduated 2001
Enumeration DateFebruary 10, 2006
Last NPPES UpdateApril 1, 2013
✔ NPI 1437122207 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in MT · 12326✔ Licensed in IN · 02002661A
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
Open in Google Maps ↗

Other Identifiers 3

OtherP00915579MT · Railroad Medicare
Medicare PIN011004192MT
Medicaid1437122207MT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Troy R. Stiles D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4789700881
PECOS Enrollment IDI20100927000613
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
447 services135 patients
Psychotherapy with evaluation and management visit, 30 minutes 90833
Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.
256 services93 patients
Assessment of emotional or behavioral problems 96127
Assessment of emotional or behavioral problems involves a thorough evaluation of your feelings, thoughts, and behaviors. It's a process where professionals study patterns over time to identify potential issues like anxiety, depression, or other mental health conditions.
88 services33 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
60 services13 patients
Psychotherapy with evaluation and management visit, 45 minutes 90836
Psychotherapy with evaluation and management is a 45-minute session where a healthcare provider discusses your mental and emotional health. They assess your current state, manage any issues, and help you develop coping strategies. This service aims to improve your overall well-being.
45 services26 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
18 services14 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Billings Clinic

Acute Care Hospitals · Billings, MT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270004
Location2800 10th Ave NBillings, MT 59101 · Yellowstone County
Emergency services Birthing friendly

Beartooth Billings Clinic

Critical Access Hospitals · Red Lodge, MT
OwnershipVoluntary non-profit - Private
CMS Certification Number271326
Location2525 N BroadwayRed Lodge, MT 59068 · Carbon County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$172.26 typical visit price
range $56.81 – $172.26
Typical copayment $43.06 (range $14.20 – $43.06)
Most-billed visit code 99205
Established Patient
$70.82 typical visit price
range $18.24 – $140.32
Typical copayment $17.70 (range $4.56 – $35.08)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATHLEEN J WAGNER LCSW
Social Worker (Clinical)
820 DIVISION ST
BILLINGS, MT 59101
Yellowstone County (406) 245-1338
BIG SKY PSYCHIATRIC SERVICES PC
Psychiatry & Neurology (Psychiatry)
820 DIVISION ST
BILLINGS, MT 59101
Yellowstone County (406) 294-5225
CLAIRE ALEXANDRA MASTEL PA-C
Physician Assistant
820 DIVISION ST
BILLINGS, MT 59101
Yellowstone County (406) 294-5225
MRS. NAOMI ROUTEN
Physician Assistant
820 DIVISION ST
BILLINGS, MT 59101
Yellowstone County (406) 294-5225

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 Troy Stiles's NPI number?

The NPI number for Troy Stiles is 1437122207. It was assigned to this individual provider in the NPPES registry on February 10, 2006.

Where is Troy Stiles located?

Troy Stiles practices at 820 Division St, Billings, MT 59101. The listed phone number is (406) 294-5225.

What is Troy Stiles's specialty?

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

Is Troy Stiles enrolled in Medicare?

Yes. Troy Stiles is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Troy Stiles accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and PacificSource Health Plans list Troy Stiles 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.

Is Troy Stiles affiliated with any hospitals?

According to CMS data, Troy Stiles is affiliated with Billings Clinic and Beartooth Billings Clinic.

When was this NPI record last updated?

The NPPES record for Troy Stiles was last updated on April 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.