1231 North 29th Street, Billings, MT 59101
Our 10-point score combines licensing and accreditation, the levels of care and payment options this facility reports, and patient ratings from Google and StartDrugRehab.com reviewers. Paid or claimed listings never change a score. Read full methodology
Patient ratings use 25 Google reviews (3.8★), weighted toward a 4.0 average until there are enough reviews to be reliable.
Rimrock – Main Building is a nonprofit substance use treatment provider in Billings, Montana, located at 1231 North 29th Street.
Levels of care offered here include medically supervised detox, residential (inpatient) treatment, hospital inpatient care, partial hospitalization (PHP), intensive outpatient (IOP), standard outpatient counseling, medication-assisted treatment (MAT), co-occurring (dual diagnosis) mental health treatment, and telehealth therapy. Clinicians use approaches such as anger management, brief intervention, cognitive behavioral therapy, contingency management/motivational incentives, and community reinforcement plus vouchers. For opioid use disorder, the program uses buprenorphine and naltrexone. It also prescribes medication for alcohol use disorder.
Payment options include government funding for people who qualify, IHS/tribal/urban (ITU) funds, Medicaid, military insurance (TRICARE), private health insurance, cash or self-payment, and state-financed health insurance. Coverage depends on your specific plan, so verify benefits before admission.
The program accepts young adults, adults, and seniors. It offers specialized groups for young adults, women, pregnant/postpartum women, men, and seniors or older adults.
Rimrock – Main Building is accredited by CARF and licensed or certified by the state substance use treatment agency and state mental health department.
Based on SAMHSA-listed programs in our directory. Rankings use the StartDrugRehab Score; facilities can't pay to change them. Distances are straight-line.
No reviews on StartDrugRehab.com yet. Were you or someone you love treated at Rimrock – Main Building? An honest review helps the next family choose with confidence. It takes about 2 minutes, and you can post with just your first name or initials.
Reviews are checked against our Review Guidelines before they appear. We publish positive and negative reviews alike, and facilities can't pay to remove, change or reorder them. Reviews are personal opinions, not medical advice.
| Licensing & accreditation | State substance use treatment agency, State mental health department, Commission on Accreditation of Rehabilitation Facilities (CARF) |
|---|---|
| Ages accepted | Young Adults, Adults, Seniors |
| Operated by | Private non-profit organization |
| Exclusive services | Specially designed program for DUI/DWI clients |
Yellowstone County, MT has 11 SAMHSA-listed addiction treatment facilities for 171,583 residents. Rimrock – Main Building is the only listed detox program in the county. It is one of 4 listed providers of buprenorphine or methadone treatment in the county. 40 people died of a drug overdose in the county in the 12 months to March 2026 (CDC provisional data): 23.3 per 100,000 residents, compared with 15.2 statewide.
Source: StartDrugRehab Treatment Deserts 2026, built from SAMHSA FindTreatment.gov, U.S. Census 2024 population estimates and CDC overdose data. Counts are SAMHSA-listed facilities only.
Rimrock – Main Building lists the following levels of care: detox, inpatient / residential, hospital inpatient, partial hospitalization (PHP), intensive outpatient (IOP), outpatient, medication-assisted treatment (MAT), dual diagnosis, and telehealth. Services can change, so confirm current programs before admission.
According to SAMHSA data, Rimrock – Main Building accepts federal, or any government funding for substance use treatment programs, ihs/tribal/urban (itu) funds, medicaid, federal military insurance (e.g., tricare), private health insurance, cash or self-payment, state-financed health insurance plan other than medicaid, and samhsa funding/block grants. Your exact coverage depends on your plan and network status. You can check your benefits with your insurer, or call (833) 589-6933 for a free benefits check.
Yes. Rimrock – Main Building provides detoxification (medically supervised withdrawal) services, including alcohol detoxification, benzodiazepines detoxification, cocaine detoxification, methamphetamines detoxification, and opioids detoxification.
Yes. Rimrock – Main Building reports accreditation from CARF. Accreditation means the facility meets independent quality and safety standards.
Rimrock – Main Building accepts young adults, adults, and seniors. Specialized groups include young adults, adult women, pregnant/postpartum women, adult men, and seniors or older adults.
Yellowstone County, MT has 11 SAMHSA-listed treatment facilities for about 171,583 residents: 1 list detox services, 4 offer buprenorphine or methadone treatment and 1 offer 24-hour care (2026 data).
Rimrock – Main Building is #1 of 9 ranked programs in Billings in our 2026 ranking, based on the StartDrugRehab Score (accreditation, levels of care, payment options, data completeness and patient ratings). Facilities cannot pay to change their rank.
The nearest other SAMHSA-listed programs are South Central Montana Regional MHC – Journey Recovery Program (Billings, under 1 miles), Billings Clinic (Billings, under 1 miles), and Compass/Alternatives Inc (Billings, 1 miles). Distances are straight-line.
Rimrock – Main Building has a 3.8-star rating from 25 Google reviews (as of November 2026). Ratings reflect individual experiences and are not a measure of clinical quality.
Admission usually starts with a phone screening and insurance check, followed by an assessment. You can contact Rimrock – Main Building directly at 406-248-3175. Our admissions helpline at (833) 589-6933 can connect you with a licensed treatment provider, which may not be Rimrock – Main Building. Our helpline is not affiliated with Rimrock – Main Building.
Compare options
Billings, MT 59102
CARF · COA accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Billings, MT 59102
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
Billings, MT 59101
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Billings, MT 59102
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Billings, MT 59101
Levels of care
Payment accepted
Medicaid · Private insurance · Self-pay +1 more
“Get help” calls our free helpline, not this facility.
Billings, MT 59101
Levels of care
Payment accepted
Medicaid · Self-pay · Sliding scale +1 more
“Get help” calls our free helpline, not this facility.
Source: SAMHSA FindTreatment.gov, data updated October 2026. Facilities report this information to SAMHSA, and it can change, so confirm details before admission. Logo courtesy of rimrock.org. A listing is not an endorsement. StartDrugRehab.com is not affiliated with Rimrock – Main Building.
