Saint Catherine of Siena MC - Mental health treatment facility in Riverhead, NY

Saint Catherine of Siena MC

Mental Health & Substance Use Treatment Center

Saint Catherine of Siena MC in Riverhead, New York provides Partial Hospitalization Program (PHP) along with Crisis Intervention. The facility's programs are structured to address mental health and substance use needs together, reflecting an integrated model of care.

Clinical services include Group Therapy and Telehealth Services tailored to each client's individual goals and needs. The clinical team serves young adults navigating Co-Occurring Disorders, helping clients work toward stability in both mental health and substance use.

Contact Information

127 West Main Street, Riverhead, NY, 11901

Monday: 8:15 AM – 4:00 PM

Tuesday: 8:15 AM – 4:00 PM

Wednesday: 8:15 AM – 4:00 PM

Thursday: 8:15 AM – 4:00 PM

Friday: 8:15 AM – 4:00 PM

Saturday: Closed

Sunday: Closed

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Treatment Services

Levels of Care

Core Services

Therapies & Approaches

Recreation Therapy

Conditions Treated

Dual Diagnosis Treatment

Populations Served

Adult Services
Senior Services
Young Adult Services

Additional Services

Smoking Cessation Treatment

Insurance Coverage

Accepts Insurance, Medicare, Medicaid, Private Insurance, Self-Pay