Rimrock
Also known as Main Building
OutpatientDual diagnosisMedicaidPrivate insuranceTRICARE / VASelf-pay
About Rimrock
Rimrock Foundation, located in Billings, Montana, is the largest addiction treatment center in the region. The facility focuses on supportive, person-centered treatment for substance use disorders and co-occurring conditions, using a holistic approach to help clients heal.
Services offered include inpatient and outpatient options, detox, day programs, counseling, and family therapy. Rimrock Foundation also provides specialized programming for adolescents and for DUI-related cases, supporting adults and families who want to regain stability and balance in everyday life. Treatment may involve individual and family therapy, parent-child interaction therapy, eye movement desensitization and reprocessing (EMDR), medication-assisted treatment (MAT), dialectical behavior therapy (DBT), and additional evidence-based methods.
Services reported to SAMHSA
- Levels of care
- Outpatient
- Treatment focus
- Substance use treatment · Mental health treatment · Treatment for co-occurring disorders plus serious mental illness (SMI) in adults
- Facility type
- Residential treatment center (RTC) for adults
- Medications used
- Nicotine replacement
- Treatment approaches
- Activity therapy · Cognitive behavioral therapy · Couples/family therapy · Dialectical behavior therapy · Group therapy · Integrated Mental and Substance Use Disorder treatment · Individual psychotherapy · Telemedicine/telehealth therapy · Abnormal involuntary movement scale
- Education and counseling
- Smoking/vaping/tobacco cessation counseling
- Special programs
- Veterans · Clients with co-occurring mental and substance use disorders · Clients who have experienced trauma · Persons with eating disorders · Persons with post-traumatic stress disorder (PTSD)
- Ages accepted
- Young Adults · Adults · Seniors
- Payment accepted
- Community Service Block Grants · 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 · State welfare or child and family services funds · U.S. Department of VA funds
- Ownership
- Private non-profit organization
- Recovery support
- Housing services · Mentoring/peer support
- Other services
- Assertive community treatment · Court-ordered outpatient treatment · Family psychoeducation · Illness management and recovery · Psychosocial rehabilitation services · Case management service · Integrated primary care services · Suicide prevention services · Education services
Facility-provided information
- Care offered
- Detox · Co-Occurring Mental Health
- Substances treated
- Alcohol · Benzodiazepines · Chronic Relapse · Co-Occurring Disorders · Cocaine · Drug Addiction · Heroin · Methamphetamine · Opioids
- Conditions treated
- Anxiety · Bipolar · Depression · Post Traumatic Stress Disorder · Trauma
- Therapies
- 1-on-1 Counseling · Cognitive Behavioral Therapy · Couples Counseling · Eye Movement Therapy (EMDR) · Family Therapy · Life Skills · Medication-Assisted Treatment · Online Therapy · Trauma-Specific Therapy
- Approaches
- Evidence-Based · Holistic · Personalized Treatment
- Who it serves
- Adolescents · Boys · Children · Girls · LGBTQ+ · Men · Men and Women · Women
- Aftercare
- Continuing Care · Discharge Planning · Employment Counseling · Relapse Prevention Planning · Support Meetings
- Amenities
- Air-Conditioned Rooms · Recreation Room
- Languages
- English
Questions to ask Rimrock
- Is my specific plan in network, and do you need prior authorization before admission?
- How many hours a week is the outpatient or IOP schedule, and are evening groups available?
- If I need medication for opioid or alcohol use disorder, do you prescribe it or refer out?
- Do you treat mental health conditions such as depression or anxiety at the same time?
- Is there a waitlist, and how soon can you do an assessment?
- What happens after the program ends: aftercare, alumni groups or step-down care?
Also confirm the facility is licensed by Montana. If you are withdrawing from alcohol or benzodiazepines, ask about medical detox; do not stop suddenly on your own.
Paying for treatment at Rimrock
Rimrock reports accepting Medicaid, Private insurance, TRICARE / VA, Self-pay. With Montana Medicaid, treatment is usually covered at little or no cost, though some levels of care need prior authorization. Most private plans must cover substance use treatment on terms comparable to other medical care under federal parity law.
Frequently asked questions
What services does Rimrock offer?
Rimrock reports these levels of care to SAMHSA: Outpatient, Dual diagnosis. Call to confirm current services and openings.
Does Rimrock accept insurance?
It reports accepting Medicaid, Private insurance, TRICARE / VA, Self-pay. Ask whether your specific plan is in network before admission.
Where is Rimrock located?
1231 North 29th Street, Billings, MT 59101.
How far is the nearest medical detox from Billings?
From the center of Yellowstone County, the closest program offering medical detox is in Billings, about 1.3 miles away (straight-line), based on SAMHSA locator data mapped by FindRehabMap.
Other treatment facilities in Billings
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See all 25 facilities in Billings · Residential · Outpatient · Intensive outpatient · MAT · Accepts Medicaid · Accepts Medicare
Last reviewed 2026-10-06. Facility details come from SAMHSA's FindTreatment.gov locator and facility-provided information. Confirm services, availability and payment directly with the facility.