Mental Health Day Treatment Programs

Alter Behavioral Health provides structured mental health day treatment through Partial Hospitalization and Intensive Outpatient Programs for adults navigating depression, anxiety, trauma, bipolar disorder, addiction, and co-occurring conditions. With evidence-based therapies, personalized care, and access to Southern California locations, our programs help clients build stability while practicing recovery skills in daily life.

Therapist meeting with adult clients in a calm mental health treatment setting

Our Mental Health Day Treatment Services

Structured day treatment options provide evidence-based support for mental health, trauma, addiction, and co-occurring conditions.

Partial Hospitalization

PHP offers intensive outpatient care for adults who need structured treatment without residential placement. Care may include CBT, DBT, EMDR, family therapy, psychiatric support, and individualized planning.

Intensive Outpatient

IOP provides structured mental health and substance use treatment at a lower care level than residential or partial hospitalization, with therapies tailored to each client’s goals and clinical needs.

Dual Diagnosis Treatment

Integrated treatment addresses addiction alongside mental health conditions such as depression, anxiety, trauma, and PTSD through coordinated therapies, family participation, and multiple levels of care.

Personalized Clinical Care

Structured Support For Lasting Stability

Mental health day treatment gives adults a structured setting for meaningful therapeutic work while supporting continued connection to everyday responsibilities. Alter Behavioral Health uses evidence-based approaches such as CBT, DBT, EMDR, family therapy, mindfulness, and trauma-focused care. Programs can address mental health, substance use, and co-occurring concerns, with Southern California locations and consultation available for determining an appropriate level of support.

Adult client speaking with a behavioral health clinician during treatment
Compassionate Care

Recovery In Progress

See how individualized treatment and continuing support can help clients move toward stability and sustained recovery.

"Me being a Registered Nurse never imagined being in need of the same services that I’ve given over the years. I can truly say I’m very pleased with my overall stay at Alter Behavioral Health, starting with the admission coordinator, The Therapist and case manager I give all staff an..."

Terry H.
The Alter Difference

Why Choose Alter Behavioral Health?

Our client-centered model combines clinical expertise, compassion, and coordinated levels of care.

Full Continuum

Access coordinated treatment across residential, partial hospitalization, intensive outpatient, outpatient, and therapeutic support services.

Evidence-Based

Clinicians use CBT, DBT, EMDR, trauma-focused modalities, family therapy, and holistic supports tailored to individual needs.

24/7 Support

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

Whole-Person Care

Treatment addresses mental health, addiction, trauma, functioning, and recovery goals through a compassionate whole-person approach.

Meet The Alter Team

Experienced leaders and clinicians guide personalized behavioral health treatment.

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 the 3-3-3 rule in mental health?

The 3-3-3 rule is a grounding exercise sometimes used to help manage distress or anxiety. It generally involves identifying three things you can see, three sounds you can hear, and moving or noticing three parts of your body. It is a coping technique, not a substitute for professional assessment. A clinician can help determine whether day treatment or another level of care is appropriate.

What are mental health day treatment programs?

What is the difference between PHP and IOP?

Who can benefit from day treatment?

What therapies are used in these programs?

Can day treatment address addiction and mental health together?

How do I know which level of care is appropriate?

Does Alter Behavioral Health verify insurance for day treatment?

Have More Treatment Questions?

Speak with the admissions team about care options and consultation.

Our Southern California Locations

Alter Behavioral Health serves clients across Southern California and supports families nationwide through coordinated care options.

Southern California

Primary Region

24/7 Availability

Admissions Support

Nationwide Support

Care Access

Looking For Care In Your Area?

Contact Alter Behavioral Health to discuss available programs and locations.

Accredited & Recognized

Awards and Recognition

Care Predictor Certified Treatment Facility recognition

Care Predictor Certified Treatment Facility

Recognition listed by Alter Behavioral Health.

The Joint Commission National Quality Approval recognition

The Joint Commission National Quality Approval

Recognition listed by Alter Behavioral Health.

DHCS recognition and certification

DHCS recognition and certification

Recognition and certification listed by Alter Behavioral Health.

The Joint Commission Gold Seal of Approval accreditation

Gold Seal of Approval accreditation from The Joint Commission

Accreditation listed in company credentials.

Begin A Conversation About Care

Contact Alter Behavioral Health to discuss consultation, admissions, insurance verification, and available treatment options.

Contact Us Today

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