Troy R. Stiles, D.O.
Psychiatry Physician · Billings, MT
Troy R. Stiles, D.O. is a psychiatry physician with a practice address in Billings, Montana, and NPI 1437122207, issued on Feb 10, 2006. Check the license (Montana 12326, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Troy Stiles
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 12326 MT
02002661A IN
Self-reported in NPPES; status is on the state search - Practice location
- 820 Division St, Billings, MT 59101
- Phone
- (406) 294-5225
- Enumerated
- Feb 10, 2006
- Record last updated
- Apr 1, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (406) 294-5226
- Medicaid ID
- 1437122207 MT
- Medicare enrollment
- Enrolled (PECOS I20100927000613); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 820 Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Mastel, PA-CPhysician Assistant1871178202
- Naomi RoutenPhysician Assistant1902293822
Verify Troy Stiles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 12326Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
6.2 times the Medicare Part D claims of the average psychiatry physician in 2024
6,210 Medicare Part D claims for 238 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Clonazepam319 claims
- Olanzapine271 claims
- Bupropion Xl244 claims
- Fluoxetine Hcl220 claims
- Dextroamphetamine-Amphet Er200 claims
- Trazodone Hcl200 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $24,712.19
61 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Big Sky Psychiatric Services PCBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
41 psychiatry physician records list a practice address in Billings
They are 41 of the 4,035 NPPES records with a practice address in Billings, and 156 psychiatry physician records in Montana.
All 41 in Billings → All 156 in Montana → Every provider in Billings →
Other psychiatry physician records in Montana
- Nora Abdullah, MDMissoula, MT1295354298
- Graig Aders, M.D.Great Falls, MT1265758734
- Erin Amato, MDBillings, MT1447425178
- Alexis Anderson, D.O.Bozeman, MT1124162177
- Deanna Armstrong, M.D.Helena, MT1003900184
- Eric Arzubi, M.D.Billings, MT1770738353
- Kary Aytes, MDMissoula, MT1831261189
- Mary Bassingthwaighte, MDMissoula, MT1346399912
- Julia Bell, MDHamilton, MT1780664318
- Daniel Bemporad, D.O.Warm Springs, MT1811438120
Common questions
What is Troy R. Stiles, D.O.'s NPI number?
Troy R. Stiles, D.O.'s National Provider Identifier (NPI) is 1437122207, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Troy R. Stiles, D.O. located?
The NPPES record lists a practice address at 820 Division St, Billings, MT, 59101. Phone: (406) 294-5225. Providers update this record themselves, so call before visiting.
How can I verify Troy R. Stiles, D.O.'s license?
NPPES lists Montana license number 12326, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Troy R. Stiles, D.O. prescribe under Medicare Part D?
In 2024, Troy R. Stiles, D.O. had 6,210 Medicare Part D claims for 238 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.