The main difference between PHP and IOP is intensity. A partial hospitalization program (PHP) runs about 5–6 hours a day, 5 days a week. An intensive outpatient program (IOP) runs about 3 hours per day, and is typically between 3-5 days per week.
PHP is the higher level of care. IOP is usually a step down. Both are structured outpatient programs, which means you live at home and attend treatment during the day, multiple days per week. PHP and IOP programs are great for those who need more support than weekly therapy, but don’t require 24-hour care.
Key Takeaways
- PHP is about 25–30 hours of treatment per week; IOP is about 9–15 hours per week.
- Both include group therapy, individual therapy, and medication support.
- PHP is full-time treatment; IOP fits around work, school, or family life.
- Residential and inpatient care are higher levels of care than PHP.
- A clinical assessment determines which level fits your needs.
- For LGBTQIA+ clients, whether the program is genuinely affirming matters as much as the level of care itself.
What is a Partial Hospitalization Program (PHP)?
PHP is the most intensive form of outpatient mental health treatment. It is full-time clinical care without overnight supervision. Most clients take a leave of absence from work or school while in PHP.
A typical PHP week includes:
- 5 days of programming (Monday–Friday)
- 5–6 hours per day of group and individual therapy
- Psychiatric care and medication management
- Case management and discharge planning
PHP is appropriate when symptoms significantly disrupt daily life, or when stepping down from inpatient or residential care.
What is an Intensive Outpatient Program (IOP)?
IOP is a structured outpatient program for people who need more support than weekly therapy but don’t require full-day care. It typically involves about 3 hours of group therapy per day, 3–5 days a week.
A review in Psychiatric Services found that, for most clients with substance use disorders, IOP outcomes are comparable to those of inpatient or residential treatment [1].
A typical IOP week includes:
- 3–5 days of programming
- About 3 hours per day of group therapy
- Individual therapy (frequency depends on intensity)
- Medication monitoring and case management
IOP often serves as a bridge back into work, school, or daily routines after PHP or residential care. It also works as a starting level for people who are stable but need a consistent structure.
How do you know which level of care is right for you?
PHP is generally the right fit when symptoms are significantly disrupting daily life, or when stepping down from inpatient or residential care. IOP is generally the right fit when you’re medically stable but need more structure than weekly therapy.
A licensed clinician makes the final recommendation based on a clinical assessment that considers symptoms, daily functioning, safety, and outside support. A few patterns that come up:
- PHP for stabilization, acute symptoms, or recent inpatient discharge.
- IOP for sustained progress, reentry into daily life, or step-down from PHP.
- Either can step up or down as your needs change during treatment.
For LGBTQIA+ clients, there’s another factor: program fit. A review in Psychology of Addictive Behaviors reported that queer and bisexual clients tend to enter substance use treatment with more severe symptoms than their heterosexual peers, and that queer and bisexual women in particular are at elevated risk for alcohol and drug use disorders [2]. The level of care matters, but so does whether the program is built to actually understand your experience.
What does affirming PHP and IOP look like at Chroma?
Chroma Wellness Center offers both PHP and IOP for LGBTQIA+ adults in Denver. Both levels of care integrate mental health and substance use treatment, with trauma-focused clinical work alongside somatic therapy, acupuncture, mindfulness, and chosen family support. Supportive LGBTQIA+ housing is also available for clients who need a safer environment during treatment.
The clinical structure is the same standard you’d expect from any quality treatment program. What’s different is who the program was built for.
Learn How Chroma Wellness Can Help
If you’re exploring PHP or IOP and want to know whether Chroma is a fit, we’re happy to talk it through. You can reach our team at 720-410-5569 or verify your insurance to learn more about your options.
FAQs
What is a higher level of care than PHP?
Residential treatment and inpatient hospitalization are higher levels of care than PHP. Residential treatment provides 24-hour clinical support in a non-hospital setting. Inpatient hospitalization is the highest level of care and is typically used for acute psychiatric stabilization. PHP is the most intensive option that does not require overnight stays.
What does IOP stand for in mental health?
IOP stands for Intensive Outpatient Program. It is a structured form of mental health or substance use treatment that involves several hours of programming per day, multiple days per week. IOP allows clients to live at home and continue with work, school, or family responsibilities while receiving consistent clinical care.
Can you work or go to school during PHP or IOP?
Most people pause work or school during PHP because it runs full-day, five days a week. IOP is specifically designed to fit around work, school, or family obligations. Some clients use leave documents like FMLA during PHP and return to their routines once they step down to IOP.
Does insurance cover PHP and IOP?
Insurance coverage for PHP and IOP varies by plan. Many insurance plans do cover both levels of care, though each policy is unique. Chroma Wellness helps verify your insurance benefits on the front-end, so you know exactly what to expect. You can visit our insurance page to verify your coverage and learn more.
Sources
[1] McCarty, D., Braude, L., Lyman, D. R., Dougherty, R. H., Daniels, A. S., Ghose, S. S., & Delphin-Rittmon, M. E. (2014). Substance abuse intensive outpatient programs: Assessing the evidence. Psychiatric Services, 65(6), 718–726. https://pmc.ncbi.nlm.nih.gov/articles/PMC4152944/
[2] Green, K. E., & Feinstein, B. A. (2012). Substance use in lesbian, gay, and bisexual populations: An update on empirical research and implications for treatment. Psychology of Addictive Behaviors, 26(2), 265–278. https://pmc.ncbi.nlm.nih.gov/articles/PMC3288601/