Residential Mental Health Treatment Facilities

Alter Behavioral Health provides personalized residential mental health treatment for adults managing psychiatric, trauma, substance use, and co-occurring disorders. Across Southern California, clients receive evidence-based therapy, compassionate clinical support, family participation options, and structured care in peaceful residential settings. With a full continuum of programs and 24/7 admissions support, treatment is designed to promote stability, healing, and lasting recovery.

Residential mental health treatment setting with a clinician supporting an adult client

Our Residential Mental Health Services

Comprehensive behavioral health programs support adults across residential, crisis, outpatient, and dual-diagnosis levels of care.

Residential Treatment

Residential treatment provides structured inpatient mental health care for adults with psychiatric, trauma, substance use, and co-occurring disorders. Individualized plans may include CBT, DBT, EMDR, family therapy, mindfulness, and other evidence-based approaches.

Crisis Stabilization

Crisis Stabilization and Intervention offers acute support for adults experiencing mental health crises. Clinical assessment, risk assessment, safety planning, psychiatric stabilization, and family sessions help address immediate needs before ongoing care.

Partial Hospitalization

The Partial Hospitalization Program offers intensive outpatient care for adults with mental health, trauma, and substance use disorders. Treatment is tailored around therapies such as CBT, DBT, EMDR, and family therapy.

Intensive Outpatient

Intensive Outpatient treatment provides structured mental health and substance abuse care at a lower level than residential or partial hospitalization programs, with individualized evidence-based therapy and family sessions.

Dual Diagnosis Treatment

Dual-diagnosis treatment addresses addiction alongside mental health conditions such as depression, anxiety, trauma, and PTSD through coordinated care across residential, crisis, partial hospitalization, and intensive outpatient programs.

Aftercare Support

Aftercare resources, local support groups, and recovery planning help clients transition toward everyday life while building skills that support long-term recovery, improved functioning, and sustained stability after discharge.

Whole-Person Treatment

Personalized Care For Lasting Recovery

Alter Behavioral Health combines personalized residential care with evidence-based clinical therapies and compassionate support for adults facing complex psychiatric and co-occurring disorders. Southern California facilities offer structured, peaceful settings where clients can focus on healing while receiving care from psychiatrists and doctorate- or master’s-level clinicians. Family participation, holistic supports, and aftercare planning help connect treatment with sustainable recovery beyond discharge.

Clinician meeting with an adult client in a calm residential treatment environment
Support That Continues

Recovery In Progress

Personalized treatment and ongoing support help clients and families move toward stability, healing, and lasting recovery.

"My stay at Alter's Irvine facility was very pleasant. The staff and accomodations were excellect. They treated me with dignity and helped me get back on my feet. Mentally, emotionally, and physically. Highly recommend"

Sara B

"I’m so grateful for Alter Mental Health. The staff went above and beyond to take care of my needs and provided me with a comfortable, safe place to heal. I can’t say enough about my case manager, Esteban, and the therapist, Neha; and the chef, Estelle, was amazing with five-star..."

Angela G.
The Alter Difference

Why Choose Alter Behavioral Health?

A client-centered approach brings clinical expertise, compassion, and coordinated support together.

Full Continuum

Access residential, crisis, partial hospitalization, intensive outpatient, outpatient, and therapeutic support services.

Personalized Care

Individualized plans address mental health, trauma, addiction, and co-occurring disorders with whole-person support.

24/7 Support

Admissions and clinical support are available around the clock for clients and families seeking Southern California care.

Clinical Innovation

Care Predictor technology supports clinical engagement and individualized treatment planning throughout care.

Meet The Alter Team

Compassionate clinicians support personalized healing across the care continuum.

Portrait of Michael Castanon, Founder and CEO of Alter Behavioral Health

Michael Castanon

Founder and CEO

Michael Castanon is the Founder and CEO of Alter Behavioral Health, a Southern California-based organization dedicated to advancing the future of mental health care. With a vision rooted in combining scientific rigor, genuine compassion, and lasting transformation, Michael has built Alter Behavioral Health into a comprehensive provider offering a full continuum of care, including residential treatment, partial hospitalization, intensive outpatient, and outpatient services. He is committed to ensuring that every client receives individualized, evidence-based treatment delivered by skilled psychiatrists and clinicians. Under his leadership, the organization has earned The Joint Commission's Gold Seal of Approval and recognition as a Care Predictor Certified Treatment Facility. Michael's mission is to empower individuals and families across Southern California and nationwide to heal, thrive, and achieve sustained recovery through innovative, whole-person care.

Frequently Asked Questions

What is residential mental health treatment?

Residential mental health treatment is a structured level of care where adults live in a treatment setting while receiving comprehensive psychiatric and therapeutic support. Alter Behavioral Health serves people experiencing conditions such as depression, anxiety, bipolar disorder, schizophrenia, borderline personality disorder, trauma, PTSD, ADHD, addiction, and co-occurring disorders. Care is personalized and may include individual, group, family, psychiatric, and holistic therapies.

Who is a good candidate for residential mental health treatment?

What therapies are used in residential treatment?

Does residential treatment address addiction and mental health together?

Can family members participate in treatment?

What other levels of care are available after residential treatment?

Does Alter Behavioral Health accept insurance?

How can someone begin residential mental health treatment?

Have More Treatment Questions?

Speak with Alter Behavioral Health about care options and admissions guidance.

Accredited & Recognized

Awards and Recognition

The Joint Commission Gold Seal of Approval accreditation

Gold Seal of Approval accreditation from The Joint Commission

Accreditation from The Joint Commission.

Care Predictor Certified Treatment Facility recognition

Care Predictor Certified Treatment Facility

Recognition as a Care Predictor Certified Treatment Facility.

The Joint Commission National Quality Approval

The Joint Commission National Quality Approval

National quality approval from The Joint Commission.

DHCS recognition and certification

DHCS recognition and certification

Recognition and certification from DHCS.

Begin A Conversation About Care

Connect with Alter Behavioral Health to discuss treatment options, admissions, and support for your next step.

Contact Alter Behavioral Health

For immediate assistance, feel free to give us a direct call at (866) 248-9285.