Montana Insurance
Updated on September 24, 2026
Allegiance has served Montana residents for decades, providing health insurance plans that may cover a full range of addiction treatment options. Rehab centers in Montana that accept Allegiance may be in-network or out-of-network with the carrier.
2 facilities listed
Allegiance health plans offer coverage for addiction treatment in Montana, including inpatient and outpatient substance use disorder services, with coverage depending on the specific plan.
Allegiance recommends pre-certification for inpatient admissions, while other services may have different authorization requirements.
Patients should verify their plan’s benefits, network status, and any pre-treatment review requirements with Allegiance and the rehab center before beginning treatment.
Explore rehab centers in Montana that accept Allegiance health insurance below.
1860 US-93, Kalispell, Montana 59901
In Kalispell, BIG SKY Treatment offers adult and adolescent outpatient programs, intensive outpatient (IOP), and virtual IOP.
The facility treats substance use and co-occurring mental health conditions together from the start of care.
Treatment is trauma-informed, and clinicians use CBT, DBT, EMDR, and motivational interviewing throughout care.
920 4th Ave., North Great Falls, Montana 59401
Located in Great Falls, Montana, Rocky Mountain Treatment Center is a 26-bed facility offering medically monitored detox and a 30-day residential program for adults with substance use disorders, delivered in a home-like setting.
The program includes individual and group counseling, family programming, recovery support, and equine therapy, drawing on 12-step recovery and Wellbriety approaches along with continuing-care support, plus optional spiritual programming for those who want it.
Finding a rehab center in Montana that accepts Allegiance health insurance can help make addiction treatment more accessible while reducing out-of-pocket expenses.
When comparing facilities, consider the addiction recovery services covered by your plan, your potential costs, and the quality of care provided.
Admissions teams at rehab centers can help verify your Allegiance benefits, explain your coverage, and identify treatment options that can help you receive the very best care while maximizing your insurance benefits.
Allegiance plans may cover addiction recovery services such as medical detox, residential or inpatient treatment, partial hospitalization programs (PHP), intensive outpatient programs (IOP), and outpatient care. Coverage varies by plan, so verify which services are covered before beginning treatment.
Ask whether the rehab center is in-network or out-of-network, as your coverage and costs may differ depending on the provider’s network status. Out-of-pocket costs at in-network rehab centers are often lower.
It’s also important to find out whether prior authorization is required for detox, residential treatment, or other levels of care.
Even with Allegiance insurance, you may have some expenses for addiction treatment. Ask about your deductible, copay, and coinsurance before entering rehab. It can also be helpful to determine whether you have already met your deductible and what your plan’s out-of-pocket maximum is.
Understanding your financial responsibilities ahead of time can help prevent unexpected medical bills and reduce added stress during recovery.
Insurance coverage is only one factor to consider when choosing a rehab center. Look for facilities with appropriate accreditation, such as from The Joint Commission or CARF, and with qualified, licensed medical and behavioral health professionals on staff.
Reviews from former patients can also offer insight into the facility, staff, treatment programs, and overall environment.
Considering both insurance coverage and quality of care can help you choose the right rehab center for you.
Treatment providers in Montana that have completed our verified listing process. Providers pay a fee to participate in this process.
Great Falls, Montana
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Elk Ridge Recovery is a residential addiction treatment center in Great Falls, Montana, helping adults with alcohol use, drug addiction, and mental health issues…
North Great Falls, Montana
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Located in Great Falls, Montana, Rocky Mountain Treatment Center is a 26-bed facility offering medically monitored detox and a 30-day residential program for adults…
Billings, Montana
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Healing Rock Recovery is a Joint Commission-accredited addiction treatment center in Billings, Montana, offering personalized care for substance use and co-occurring mental health disorders.…
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