Levels of Care

What is a PHP (partial hospitalization program)?

PHP is the day-treatment level of care that sits between residential and outpatient. Here's what it involves and how it fits.

By Level Up Compliance · Updated May 2026 · ~5 min read

A partial hospitalization program (PHP) is a structured day-treatment level of care that provides intensive clinical programming — typically around 20 or more hours per week, often five to six days a week — while clients return home in the evenings. PHP sits between residential treatment (24-hour care) and intensive outpatient (IOP), giving clients substantial daily support without an overnight stay.

Where PHP fits in the continuum

Think of treatment as a ladder. Residential and detox provide 24-hour care at the top. PHP is the next step down — full days of structured therapy with clients going home at night. IOP is a further step down with fewer weekly hours, and standard outpatient is the lightest touch. PHP is common both as a starting point for clients who don't need 24-hour care and as a step-down for clients leaving residential.

What it isStructured day treatment — intensive programming, clients go home at night
Typical hours~20+ hours/week, often 5–6 days
Sits betweenResidential (24-hour) above, IOP below
To operate oneLicensing/certification for the level of care plus accreditation to bill insurance
Thinking of adding a PHP? Like any treatment level, it needs the right licensing, accreditation, and payer contracts. See how to open a rehab center for the full path.

Frequently asked questions

What is a partial hospitalization program (PHP)?

A PHP is a structured day-treatment level of care that provides intensive clinical programming — typically around 20 or more hours per week — while clients return home in the evenings. It sits between residential treatment and intensive outpatient care.

What is the difference between PHP and residential treatment?

Residential treatment provides 24-hour care with clients living on site, while PHP provides intensive daytime programming with clients returning home at night. PHP is the next step down from residential in the continuum of care.

What is the difference between PHP and IOP?

PHP is more intensive — around 20 or more hours per week, often five to six days — while IOP is lighter, commonly around 9 to 15 hours per week across about three days. Both allow clients to live at home.

What do you need to run a PHP?

Running a PHP requires the appropriate state licensing or certification for the level of care, accreditation to contract with insurance payers, qualified clinical staffing, and compliant policies and documentation.

Related guides

PHP vs IOP

The difference between the two outpatient levels of care.

How to Open a Rehab Center

The full sequence from level of care to opening.

What Is CARF Accreditation?

CARF vs. Joint Commission and how to earn it.

Want this handled for you?

Level Up Compliance guides behavioral health founders through every step — licensing, accreditation, contracting, and operations.