Mental Health PHP
Intensive outpatient treatment for adults experiencing conditions such as depression, anxiety, bipolar disorder, schizophrenia, or borderline personality disorder, with care tailored to individual clinical needs.
Alter Behavioral Health offers a structured Partial Hospitalization Program for adults managing mental health, trauma, and substance use disorders. PHP provides intensive outpatient support while allowing participants to maintain greater connection with daily life than residential care. With evidence-based therapies, individualized planning, and access to Southern California treatment locations, the program supports meaningful progress and continued recovery.

Structured behavioral health support using individualized, evidence-based therapies for adults with complex mental health and co-occurring needs.
Intensive outpatient treatment for adults experiencing conditions such as depression, anxiety, bipolar disorder, schizophrenia, or borderline personality disorder, with care tailored to individual clinical needs.
Individualized treatment for trauma and PTSD using evidence-based approaches that may include EMDR, CBT, DBT, and other therapeutic modalities selected with the care team.
Integrated PHP care for adults navigating substance use alongside mental health conditions, addressing co-occurring needs through therapy, clinical planning, and family participation.
Alter Behavioral Health’s PHP offers intensive outpatient care for adults who need substantial therapeutic support without necessarily entering residential treatment. Care may address depression, anxiety, bipolar disorder, trauma, PTSD, schizophrenia, borderline personality disorder, and substance abuse. Evidence-based modalities such as CBT, DBT, EMDR, and family therapy are tailored to each person’s goals within Alter’s Southern California continuum of care.

Discover how compassionate, evidence-based behavioral health care can support lasting change for clients and families.
A client-centered approach combining clinical expertise, compassionate support, and a full continuum of care.
Treatment incorporates CBT, DBT, EMDR, family therapy, and other individualized clinical approaches.
Care addresses mental health, substance use, trauma, and personal recovery goals together.
Multiple care levels support transitions from residential treatment through PHP, IOP, outpatient, and aftercare.
Psychiatrists and doctorate- or master’s-level clinicians provide personalized care across Southern California.
Compassionate clinicians support personalized behavioral health treatment and recovery.

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.
PHP stands for Partial Hospitalization Program. In mental health services, PHP is an intensive outpatient level of care for people who need substantial therapeutic and clinical support but may not require residential treatment. Alter Behavioral Health’s PHP serves adults with mental health, trauma, and substance use disorders through individualized treatment using modalities such as CBT, DBT, EMDR, and family therapy.
Speak with Alter Behavioral Health about treatment options and enrollment.
Accreditation listed by Alter Behavioral Health.
Certification listed among Alter Behavioral Health recognitions.
Recognition listed by Alter Behavioral Health.
Recognition and certification listed by Alter Behavioral Health.
Nomination listed by Alter Behavioral Health.
Contact Alter Behavioral Health to discuss PHP, insurance verification, and personalized treatment options.
For immediate assistance, feel free to give us a direct call at (866) 248-9285.
For immediate assistance, feel free to give us a direct call at (866) 248-9285.