If you’ve started looking into addiction treatment, you’ve probably run into a wall of acronyms — PHP, IOP, OP. They all sound similar, but they’re actually pretty different in terms of how intensive they are and who they’re right for.
At Wavecrest Behavioral Health in Orange County, we offer all three levels of outpatient care. This guide breaks down what each one actually looks like, who it’s designed for, and how people typically move between them.
Why Levels of Care Matter in Addiction Treatment
Treatment isn’t one-size-fits-all. The right level of care depends on how severe the addiction is, whether there are co-occurring mental health conditions, how stable someone’s home environment is, and how much structure they need to stay on track.
Getting the match right matters a lot. Too little structure and people slip. Too much and they can’t sustain it. The American Society of Addiction Medicine (ASAM) has a widely used framework for figuring out the right fit — and at Wavecrest, our clinical team uses that same approach at intake.
The outpatient continuum from most to least intensive:
- Partial Hospitalization Program (PHP)
- Intensive Outpatient Program (IOP)
- Standard Outpatient Program (OP)
What Is a Partial Hospitalization Program (PHP)?
PHP is the most intensive outpatient option — but despite the word “hospitalization” in the name, you don’t stay overnight. Clients come in for structured programming during the day and return home or to sober living each evening.
What PHP Looks Like Day-to-Day
- Typically meets 5–6 days per week
- Sessions run 5–6 hours per day
- Full structured clinical programming including group therapy, individual therapy, psychoeducation, and case management
- Medical monitoring may be available depending on the facility
Who Is PHP Designed For?
PHP tends to be the right fit for people who:
- Have recently completed detox or residential treatment and need step-down support
- Require a high level of structure but do not need 24/7 supervision
- Have a stable living situation to return to each evening
- Are managing moderate to severe addiction with or without co-occurring mental health conditions
- Cannot safely manage recovery with less intensive support
What Are the Goals of PHP?
- Stabilize the client clinically after detox or residential care
- Build foundational recovery skills before transitioning to less intensive treatment
- Address co-occurring mental health conditions in a structured setting
- Develop a robust relapse prevention plan
What Is an Intensive Outpatient Program (IOP)?
IOP is the most common level of care for people in addiction treatment — and for good reason. It’s structured enough to make a real difference, but flexible enough that most people can keep working, parenting, or going to school while they’re in it.
What IOP Looks Like Day-to-Day
- Typically meets 3–5 days per week
- Sessions run 3 hours per day
- Programming includes group therapy, individual counseling, skills-building, and relapse prevention
- Available in-person and virtually in California
Who Is IOP Designed For?
IOP tends to work well for people who:
- Are stepping down from PHP or residential treatment
- Have mild to moderate addiction and a stable home environment
- Need structured support while maintaining work, school, or family responsibilities
- Are motivated to engage in treatment but do not require daily full-day programming
- Are transitioning from early recovery into longer-term maintenance
What Are the Goals of IOP?
- Reinforce recovery skills developed in higher levels of care
- Build long-term coping strategies and relapse prevention tools
- Maintain clinical accountability while reintegrating into daily life
- Continue addressing co-occurring mental health conditions
What Is a Standard Outpatient Program (OP)?
Standard outpatient is the lightest level of structured treatment. It’s not usually where someone starts — it’s where they land once they’ve built some stability and don’t need intensive programming anymore.
What OP Looks Like Day-to-Day
- Typically meets 1–2 days per week
- Sessions run 1–2 hours per day
- May include individual therapy, group therapy, or both
- Often used as a long-term maintenance level of care
Who Is OP Designed For?
OP is typically a good fit for people who:
- Have completed PHP or IOP and are in stable recovery
- Have strong external support systems (sober living, family, AA/NA)
- Need ongoing clinical accountability but not intensive programming
- Are managing a chronic condition with low current risk of relapse
What Are the Goals of OP?
- Maintain recovery momentum after stepping down from IOP
- Continue individual therapy and skills development
- Provide a clinical safety net during the transition to independent recovery
- Support long-term sobriety maintenance
PHP vs IOP vs OP — Side by Side
PHP | IOP | OP | |
|---|---|---|---|
| Days per week | 5–6 | 3–5 | 1–2 |
| Hours per day | 5–6 hrs | 3 hrs | 1–2 hrs |
| Intensity | High | Moderate | Low |
| Best for | Post-detox / step-down | Working adults, step-down | Long-term maintenance |
| Overnight stay | No | No | No |
| Virtual option | Sometimes | Yes | Yes |
How Do You Know Which Level Is Right for You?
Honestly, the best way to figure out which level is right is to talk to a clinician. You shouldn’t have to self-diagnose. At Wavecrest, every new client gets a thorough intake assessment before anything is recommended. We look at:
- Severity of substance use and history of prior treatment
- Presence of co-occurring mental health conditions
- Medical needs and withdrawal risk
- Stability of home and social environment
- Work, school, and family obligations
- Personal motivation and readiness for change
From there, our team recommends a starting point — and adjusts as things change.
How Does the Step-Down Process Work?
Recovery doesn’t follow a straight line, but generally speaking, the progression goes from higher to lower intensity as someone builds stability.
A typical treatment progression at Wavecrest BH:
- Detox — medically supervised withdrawal management
- PHP — intensive daily programming post-detox
- IOP — structured treatment with more flexibility
- OP — ongoing maintenance and relapse prevention
- Aftercare — alumni support, sober living, community resources
Not everyone needs to start at the top. Some people come to us directly into IOP. Others need detox first. The goal is always to match the level of care to where someone actually is — not to run them through a checklist.
Does Insurance Cover PHP, IOP, and OP in California?
The short answer is yes — most of the time. Under the ACA and California’s mental health parity laws, insurance plans are required to cover substance use disorder treatment at the same level as other medical care. That includes PHP, IOP, and OP.
Plans we commonly work with include:
- Medi-Cal
- Blue Shield of California
- Aetna
- Cigna
- United Healthcare
- Anthem Blue Cross
Wavecrest Behavioral Health offers free, confidential insurance verification. Our admissions team will confirm your benefits and explain any out-of-pocket costs before treatment begins.
PHP, IOP, and OP at Wavecrest Behavioral Health
Wavecrest offers the full continuum — PHP, IOP, and Virtual IOP — for clients across Orange County and California. All programs include integrated dual diagnosis treatment, so if there’s a mental health condition alongside the addiction, we address both.
Our programs include:
- PHP — structured full-day programming in Santa Ana
- IOP — flexible in-person and virtual options
- Virtual IOP — telehealth-based IOP available statewide
- Dual diagnosis treatment integrated across all levels of care
If you’re not sure where to start, that’s okay. Our admissions team can walk you through it — no pressure, no commitment. If you’re still doing your research, our guide on what makes a good drug rehab is a good place to start.
Call us today for a free, confidential assessment — we’re available 24/7.