Residential Mental Health Treatment Centers in San Diego

Alter Behavioral Health provides personalized residential mental health treatment for adults in San Diego and throughout Southern California. Our full-continuum approach supports people facing depression, anxiety, bipolar disorder, trauma, PTSD, schizophrenia, personality disorders, ADHD, and co-occurring addiction through evidence-based therapies, compassionate clinical care, family participation, and individualized treatment planning.

Residential mental health treatment setting with clinician speaking to adult client

Our Residential Mental Health Services

Personalized behavioral health programs support adults across residential, crisis, partial hospitalization, intensive outpatient, and dual-diagnosis care.

Residential Treatment

Comprehensive residential care supports adults with mental health, trauma, and co-occurring substance use concerns through individualized plans, evidence-based therapies, family participation, and supportive living environments.

Crisis Stabilization

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

Partial Hospitalization

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

Intensive Outpatient

Intensive Outpatient treatment provides structured behavioral health and substance abuse support at a lower level of care than residential or partial hospitalization programs.

Dual Diagnosis Treatment

Dual-diagnosis treatment addresses co-occurring addiction and mental health conditions through coordinated care, therapeutic modalities, family participation, and multiple levels of treatment.

Care Continuum

Alter Behavioral Health connects residential, crisis, partial hospitalization, intensive outpatient, outpatient, transitional, and therapeutic support services for personalized ongoing care.

Whole-Person Treatment

Personalized Care for Lasting Recovery

Residential mental health treatment provides a structured, supportive setting for adults who need more comprehensive care than outpatient services can offer. In San Diego and across Southern California, Alter Behavioral Health combines individualized treatment planning with CBT, DBT, EMDR, brainspotting, mindfulness, family therapy, and holistic supports. Care addresses mental health, trauma, addiction, and co-occurring disorders while preparing clients for continued recovery after discharge.

Clinician providing personalized residential mental health support to adult client
Support That Endures

Stories of Transformation

Learn how personalized, evidence-based care can support healing, stability, and meaningful progress beyond treatment.

"This place saved my life! All the staff are amazing and caring. I was there for close to 6 weeks, and the staff became my second family. I cried when I left. I still miss them up to today!!! I can't say enough good things about this caring place. So..."

T.B.

"I had an incredible 30-day experience at Alter. Their staff is second to none, the care is absolutely extraordinary, and the accommodations were wonderful. Felt safe, secure, and seen throughout my treatment. I would not hesitate to recommend the Alter Behavioral Health program to anyone seeking mental health treatment."

Kelsey H.

"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.

"This place saved my life! All the staff are amazing and caring. I was there for close to 6 weeks, and the staff became my second family. I cried when I left. I still miss them up to today!!! I can't say enough good things about this caring place. So..."

T.B.

"I had an incredible 30-day experience at Alter. Their staff is second to none, the care is absolutely extraordinary, and the accommodations were wonderful. Felt safe, secure, and seen throughout my treatment. I would not hesitate to recommend the Alter Behavioral Health program to anyone seeking mental health treatment."

Kelsey H.

"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.

"This place saved my life! All the staff are amazing and caring. I was there for close to 6 weeks, and the staff became my second family. I cried when I left. I still miss them up to today!!! I can't say enough good things about this caring place. So..."

T.B.

"I had an incredible 30-day experience at Alter. Their staff is second to none, the care is absolutely extraordinary, and the accommodations were wonderful. Felt safe, secure, and seen throughout my treatment. I would not hesitate to recommend the Alter Behavioral Health program to anyone seeking mental health treatment."

Kelsey H.

"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?

Our care model combines clinical expertise, compassion, and individualized support for adults and families.

Full Continuum

Access connected levels of care from residential treatment through outpatient and therapeutic support services.

Personalized Plans

Individualized treatment plans address each client’s mental health, trauma, addiction, and recovery goals.

Clinical Expertise

Psychiatrists and doctorate- or master’s-level clinicians deliver evidence-based, trauma-informed care.

24/7 Support

Clinical and admissions support is available around the clock for clients and referring professionals in San Diego.

Meet the Alter Behavioral Health Team

Compassionate clinicians support adults and families through personalized behavioral healthcare.

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 provides a structured living environment with comprehensive clinical support for adults who need more care than outpatient services can provide. Alter Behavioral Health’s residential program addresses conditions including depression, anxiety, bipolar disorder, schizophrenia, borderline personality disorder, trauma, PTSD, ADHD, and co-occurring drug or alcohol addiction through individualized plans and evidence-based therapies.

Who can benefit from residential mental health treatment in San Diego?

What conditions does Alter Behavioral Health treat?

What therapies are used in residential treatment?

Does Alter Behavioral Health offer dual-diagnosis treatment?

Does Alter Behavioral Health accept insurance?

Is crisis support available for adults in San Diego?

How can families begin residential mental health treatment?

Have More Treatment Questions?

Speak with the admissions team about care options for your family.

Areas We Serve

Alter Behavioral Health supports clients in San Diego, Southern California, and communities across the nation.

Looking for Care Near San Diego?

Contact Alter Behavioral Health to discuss available treatment options.

Recognized & Accredited

Awards and Recognition

The Joint Commission Gold Seal of Approval accreditation

Gold Seal of Approval Accreditation

Accreditation from The Joint Commission.

Care Predictor Certified Treatment Facility recognition

Care Predictor Certified Treatment Facility

Recognition identified in Alter Behavioral Health information.

The Joint Commission National Quality Approval recognition

The Joint Commission National Quality Approval

National quality approval listed by Alter Behavioral Health.

DHCS recognition and certification

DHCS Recognition and Certification

Recognition and certification listed by Alter Behavioral Health.

Begin the Conversation About Care

Contact Alter Behavioral Health for a confidential consultation about residential mental health treatment and available levels of care.

Contact Us Today

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