How We Rank Listings
Addictions.com does not sell placement in its treatment directories. Every facility listed on this page has been evaluated against a consistent set of criteria: state licensure, accreditation by recognized bodies such as the Joint Commission, CARF, LegitScript, or NAATP, the range of treatment levels offered, specialty programs available, and accepted payment types. Facilities with verified accreditation are identified as such in each listing. We update facility data on a rolling basis, but licensing status, insurance participation, and bed availability can change between updates. Confirm these details directly with any facility before making a decision. Our goal is to give you an accurate, unbiased starting point for one of the most consequential decisions you or a loved one may face.
Rehab in Costa Mesa: What to Know
Costa Mesa is a city of roughly 110,000 people in northern Orange County, situated about 35 miles south of downtown Los Angeles. Over the past several decades, the city has developed one of the most concentrated addiction treatment markets in California, drawing people from across the state and beyond for residential care. The Addictions.com directory currently lists 37 licensed treatment facilities in Costa Mesa. For a broader view of options across the state, the California rehab directory covers programs in every county.
Behavioral health services across Orange County are coordinated through the Orange County Health Care Agency (OCHCA). The agency’s OC Links line—(855) 625-4657, available Monday through Friday from 8 a.m. to 6 p.m.—connects callers to county-funded mental health and addiction treatment programs, including substance use services covered through Drug Medi-Cal for eligible Medi-Cal members. The county also operates the Be Well OC initiative, which provides crisis stabilization and residential substance use disorder treatment through campuses in Orange and Irvine, serving all residents regardless of insurance status or ability to pay.
For complex withdrawal presentations requiring acute hospital-level monitoring, Orange Coast Memorial Medical Center in Costa Mesa and Hoag Hospital Newport Beach are the primary nearby facilities. Several Costa Mesa treatment providers operate full continuums—medically supervised detox through residential care, outpatient programs, and sober living—within a single network, which reduces the gaps that can arise when patients transfer between unaffiliated facilities at different stages of care.
Alcohol use disorder is the most common primary diagnosis at Costa Mesa treatment centers, with 33 of the city’s 37 facilities offering dedicated alcohol rehabilitation services. Opioid-specific programs are available at 23 facilities, a number shaped by Orange County’s documented fentanyl burden. Twenty-five facilities provide integrated dual diagnosis care for co-occurring mental health conditions, and 24 offer programming designed for young adults—one of the stronger concentrations of age-specific services in the California market.
Cost of Rehab in Costa Mesa
No published city-level cost benchmarks exist specifically for Costa Mesa, but programs here generally track California pricing and tend to run above the state midpoint given Orange County’s higher cost of living. The figures below are national reference points from the National Center for Drug Abuse Statistics; California programs, particularly in coastal markets, commonly exceed these baselines. Inpatient residential treatment carries the highest cost because it bundles housing, meals, 24-hour clinical supervision, and therapy. Before committing to a program, verifying your rehab insurance benefits is one of the most effective ways to reduce out-of-pocket expenses.
Costs within these ranges vary depending on several factors:
How to Pay for Rehab in Costa Mesa
Of Costa Mesa’s 37 treatment facilities, 36 accept self-pay or cash and 31 accept private health insurance—ratios that reflect the city’s predominantly private-market treatment mix. Publicly funded options are more limited here than in county-operated hubs: only 2 facilities each accept Medi-Cal and Medicare. Several other cost-reduction options exist, including 7 centers offering sliding-scale fees based on income, 5 offering financing, and 2 offering formal financial assistance programs.
Below is a breakdown of each payment type available in Costa Mesa.
Medicare
Two Costa Mesa facilities accept Medicare. Medicare Part A covers inpatient psychiatric and substance use disorder treatment in a hospital or residential setting when medically necessary. Part B covers outpatient mental health and substance use services, and Medicare Advantage plans often include additional behavioral health benefits. Coverage levels depend on your plan structure, network participation, and current deductible status. Contact 1-800-MEDICARE (1-800-633-4227) or review your Summary of Benefits to confirm what your plan covers before enrolling in a program.
Medi-Cal and Drug Medi-Cal
Two Costa Mesa facilities accept Medi-Cal. Orange County Medi-Cal benefits are administered through CalOptima, the county’s managed care plan. Eligible members access substance use disorder treatment through the Drug Medi-Cal Organized Delivery System (DMC-ODS), which covers the full continuum of care including medical detox, residential treatment, outpatient counseling, and medication-assisted treatment with medications such as buprenorphine and naltrexone. Residential coverage is available for up to 90 days per year. Contact the OCHCA OC Links line at (855) 625-4657 or CalOptima directly to confirm your eligibility and locate participating providers in Costa Mesa.
Private Health Insurance
Thirty-one Costa Mesa facilities accept private health insurance. The Affordable Care Act requires all ACA-marketplace plans to cover substance use disorder treatment as an essential health benefit, and federal mental health parity laws require that coverage be comparable to medical and surgical benefits. Most major carriers active in California have participating providers in the Costa Mesa market, including:
- Anthem Blue Cross
- Blue Shield of California
- Aetna
- Cigna
- UnitedHealthcare
- Kaiser Permanente
- Covered California plans
Coverage levels vary by plan. Call the member services number on the back of your insurance card to verify in-network providers in Costa Mesa and confirm your deductible, copay, and annual benefit limits for substance use treatment.
Sliding-Scale Fees
Seven Costa Mesa facilities offer sliding-scale fee structures that adjust program costs based on household income and financial circumstances. These programs are typically designed for people who earn too much to qualify for Medi-Cal but cannot manage standard private-pay rates. Income documentation is usually required during the intake process, and availability varies by facility.
Financial Assistance
Two Costa Mesa facilities offer formal financial assistance programs, which may include reduced rates, deferred payment, or partial grants depending on clinical and financial eligibility. Rehab scholarship programs at the national level through nonprofit organizations provide another avenue for people who cannot cover out-of-pocket costs, and some facilities may be familiar with available scholarship sources.
Military Benefits and TRICARE
Two Costa Mesa facilities accept TRICARE, the federal health coverage program for active-duty service members, veterans with qualifying status, and their families. TRICARE covers mental health and substance use disorder treatment as part of its core benefits. Service members and veterans may also access addiction treatment through VA Long Beach Healthcare System (Tibor Rubin VA Medical Center) or its community-based outpatient clinics in Laguna Hills and Santa Ana, both closer to Costa Mesa than the Long Beach main campus. For more on treatment options available to those who have served, see the rehab resources for veterans and military guide.
Financing
Five Costa Mesa facilities offer financing options that allow patients to pay for treatment costs over time through installment plans. Financing is typically arranged directly through the facility or through a third-party healthcare financing provider. Interest rates and repayment terms vary by arrangement; confirm the full cost of financing, including any fees, before signing an agreement.
Levels of Care Available in Costa Mesa
Costa Mesa’s 37 facilities span the full treatment continuum: 27 offer medical detox, 28 run residential inpatient programs, 32 operate standard outpatient clinics, 8 provide partial hospitalization programs, 25 deliver integrated dual diagnosis care for co-occurring mental health conditions, and 13 maintain sober living homes.
Medical Detox
Medical detox is the first clinical step for people who have developed a physical dependence on alcohol, opioids, benzodiazepines, or other substances. It involves supervised withdrawal management in a medical setting, with around-the-clock monitoring and medication to control symptoms safely and prevent complications. With 27 facilities offering supervised medical detox, Costa Mesa has more immediate detox capacity than most California cities of its size.
Inpatient and Residential Treatment
Inpatient residential treatment provides structured, immersive care in a live-in facility, typically for 28, 60, or 90 days. Clients receive individual therapy, group therapy, medication management where applicable, and peer support within a substance-free environment. Twenty-eight Costa Mesa facilities offer this level of care, making residential treatment the most common service type in the local market.
Partial Hospitalization Programs
Partial hospitalization programs provide a structured clinical day—typically five to six hours of treatment five days a week—without overnight stays. PHP is commonly used as a step-down from residential treatment or as an intensive option for people who need more structure than a standard outpatient program but can safely return home each evening. Eight Costa Mesa facilities operate partial hospitalization programs.
Standard Outpatient
Outpatient programs offer the most scheduling flexibility, with sessions typically meeting one to three times per week. They are appropriate for people with stable housing and strong social support, for those with lower-severity presentations, or for those transitioning out of a higher level of care. Thirty-two Costa Mesa facilities offer outpatient rehabilitation, giving clients a wide range of scheduling options and therapeutic approaches.
Dual Diagnosis
Dual diagnosis treatment addresses a substance use disorder and a co-occurring mental health condition—such as co-occurring depression, anxiety, PTSD, or bipolar disorder—simultaneously. Treating both conditions within the same care episode produces better long-term outcomes than treating them separately and sequentially. Twenty-five Costa Mesa facilities are equipped for integrated dual diagnosis care.
Sober Living
Sober living homes provide structured, substance-free housing for people in early recovery, typically following a residential program. Residents live with peers in recovery, participate in house meetings, and usually continue outpatient therapy or support groups while rebuilding daily routines and responsibilities. Thirteen sober living homes in Costa Mesa support the aftercare and continuing care phase of recovery.
Specialty Programs in Costa Mesa
Costa Mesa facilities include a broad range of population-specific and substance-specific programming. The counts below reflect the number of facilities offering each specialty, based on current directory data. Where a specialty program connects to a dedicated resource, a link is included in the program description.
Free and Low-Cost Rehab Resources in Costa Mesa
For people without insurance or with limited financial resources, the following organizations provide free or low-cost substance use and mental health services in Costa Mesa and across Orange County. If you or someone you know is in crisis, contact a crisis line immediately. For a broader overview of crisis support and mental health resources, visit the suicide prevention resources page.
Crisis Lines
988 Suicide and Crisis Lifeline — Call or text 988. Free, confidential crisis support available 24 hours a day, seven days a week. Trained counselors support mental health and substance use emergencies and can connect callers with local treatment resources.
SAMHSA National Helpline — Call 1-800-662-4357 (1-800-662-HELP). Free, confidential, 24/7 treatment referral and information service in English and Spanish for individuals and families dealing with substance use or mental health issues.
County Behavioral Health
OC Links — Orange County Health Care Agency — Call (855) 625-4657, available Monday through Friday from 8 a.m. to 6 p.m. Clinical navigators connect callers to county-funded substance use treatment, mental health programs, and crisis services across Orange County, and can make direct referrals to programs while on the call.
Community Resources
Be Well OC Orange Campus — Call (949) 749-2500. Located at 265 S. Anita Drive, Orange, CA 92868. The Be Well OC Orange Campus provides mental health and substance use disorder services—including a crisis stabilization unit, crisis residential program, and residential SUD treatment—for all Orange County residents regardless of insurance status or ability to pay. As of October 2024, the campus is operated directly by the Orange County Health Care Agency.
California 211 — Dial 2-1-1 or visit 211ca.org. A free statewide referral service that connects callers to local social services including housing assistance, food access, mental health resources, and substance use treatment programs throughout Orange County.
Veterans and Military
VA Long Beach Healthcare System (Tibor Rubin VA Medical Center) — Call (562) 826-8000. Located at 5901 E. 7th Street, Long Beach, CA 90822. The VA Long Beach system serves veterans across Los Angeles and Orange counties through eight locations, including community-based outpatient clinics in Laguna Hills and Santa Ana—both closer to Costa Mesa than the main Long Beach campus. Substance use disorder and mental health services are available to enrolled veterans, and community care referrals may be available for those who meet eligibility criteria.
Drug and Alcohol Use Statistics in Orange County
Costa Mesa is part of Orange County, which tracks substance use mortality through the Orange County Sheriff-Coroner Division. Fentanyl remains the county’s leading cause of drug-related death, though recent data shows a meaningful and sustained decline. The county’s fentanyl mortality trends continue to shape local treatment demand; for a detailed overview of fentanyl addiction and overdose risk, see the full guide.
Resources
- National Center for Drug Abuse Statistics. (2024). Average cost of drug rehab. https://drugabusestatistics.org/cost-of-rehab/
- Orange County Sheriff-Coroner Division. (2025, November 13). Fentanyl-related deaths in Orange County see five-year low. Orange County Health Care Agency. https://www.ochealthinfo.com/press/fentanyl-related-deaths-orange-county-see-five-year-low
- Substance Abuse and Mental Health Services Administration. (2025). 2024 National Survey on Drug Use and Health (NSDUH). U.S. Department of Health and Human Services. https://www.samhsa.gov/data/data-we-collect/nsduh-national-survey-drug-use-and-health
- Orange County Health Care Agency. (n.d.). Drug Medi-Cal Organized Delivery System. https://www.ochealthinfo.com/providers-partners/quality-management-services-qms/quality-assurance-quality-improvement-qaqi-3
- Be Well OC. (n.d.). Be Well Orange Campus. https://bewelloc.org/be-well-orange-campus/
- U.S. Department of Veterans Affairs. (n.d.). About VA Long Beach Healthcare System. https://www.va.gov/long-beach-health-care/about-us/
