Live-in Therapy and Residential Mental Health Treatment

Alter Behavioral Health provides live-in therapy and residential mental health treatment for adults navigating complex psychiatric, trauma, addiction, and co-occurring disorders. With personalized care, evidence-based therapies, compassionate clinicians, and a full continuum of support, clients can step away from daily pressures and focus on meaningful healing in a structured Southern California treatment environment.

Comfortable residential mental health treatment setting with clinician and adult client talking

Our Residential Mental Health Services

Explore connected levels of mental health, crisis, addiction, and dual-diagnosis care tailored to individual treatment needs.

Residential Treatment

Structured residential care supports adults with depression, anxiety, bipolar disorder, schizophrenia, trauma, PTSD, ADHD, personality disorders, and co-occurring addiction through personalized, evidence-based treatment.

Crisis Stabilization

Crisis Stabilization and Intervention provides acute support, clinical assessment, risk assessment, safety planning, psychiatric stabilization, and family sessions for adults experiencing mental health crises.

Partial Hospitalization

Partial Hospitalization offers intensive outpatient care for adults with mental health, trauma, and substance use disorders, using approaches 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 therapeutic support.

Dual Diagnosis Treatment

Dual-diagnosis care addresses addiction alongside mental health conditions such as depression, anxiety, trauma, and PTSD through coordinated treatment across multiple levels of care.

Whole-Person Care

Personalized Support for Lasting Recovery

Live-in therapy creates space for adults to focus on recovery within a structured, supportive environment. Alter Behavioral Health combines person-centered care with CBT, DBT, EMDR, brainspotting, mindfulness, family therapy, and other evidence-based approaches. Residential treatment is available across Southern California, with care designed for mental health, trauma, addiction, and co-occurring disorders and supported by transition planning beyond discharge.

Clinician providing personalized residential mental health therapy to an adult client
A Path Forward

Stories of Transformation

Discover how individualized care and coordinated treatment can support meaningful progress beyond immediate symptoms.

"I had a beautiful experience here and the staff was amazing. Everyone was so caring and sweet. They’ve turned my life around for the better."

Ellie A.

"Alter is a great program, everyone there is awesome. The case manager and therapist are great and helped me a lot. The house is so beautiful and a very safe and comfortable setting. There is nursing and day staff always at the house 24/7 at the house- super helpful. We..."

Katelyn L.
The Alter Difference

Why Choose Alter Behavioral Health?

Families and referring professionals can access coordinated behavioral health care shaped around each person’s needs.

Full Continuum

Connected residential, crisis, partial hospitalization, intensive outpatient, outpatient, and support services.

Clinical Expertise

Psychiatrists and doctorate- or master’s-level clinicians provide individualized, evidence-based care.

Whole-Person Care

Treatment addresses mental health, addiction, trauma, relationships, and long-term recovery needs.

24/7 Support

Around-the-clock clinical and admissions support helps families and referring professionals navigate care.

Meet The Alter Team

Compassionate clinicians support individualized healing through coordinated behavioral health care.

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 live-in therapy or residential mental health treatment?

Live-in therapy, also called residential mental health treatment, provides a structured setting where adults receive ongoing clinical care while living at a treatment residence. The approach can support people managing complex psychiatric conditions, trauma, addiction, or co-occurring disorders. Care may include individual and group therapy, psychiatric support, family participation, wellness resources, and planning for a transition to less intensive services.

Who may benefit from residential mental health treatment?

What therapies are offered in residential treatment?

How does residential treatment differ from PHP and IOP?

Does residential treatment address addiction and mental health together?

How can families or professionals begin the admissions process?

Does Alter Behavioral Health accept insurance?

Where is residential mental health treatment available?

Have More Treatment Questions?

Speak with the admissions team about care options and next steps.

Residential Treatment Locations

Alter Behavioral Health supports clients across Southern California and families seeking care nationwide.

Looking For Residential Care?

Contact admissions to discuss availability, fit, and treatment options.

Recognized & Accredited

Awards and Recognition

The Joint Commission Gold Seal of Approval accreditation

Gold Seal of Approval accreditation from The Joint Commission

Accreditation listed by Alter Behavioral Health.

Care Predictor Certified Treatment Facility recognition

Care Predictor Certified Treatment Facility

Recognition listed in Alter Behavioral Health information.

The Joint Commission National Quality Approval recognition

The Joint Commission National Quality Approval

Recognition listed in Alter Behavioral Health information.

DHCS recognition and certification

DHCS recognition and certification

Recognition and certification listed by Alter Behavioral Health.

Take The Next Step Toward Care

Contact Alter Behavioral Health to discuss residential treatment, insurance verification, private pay options, and appropriate next steps.

Contact Us Today

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