Preferred Mental Health Management (PMHM) has one of the nation’s largest behavioral health networks, with more than 10,500 outpatient providers and 1,500 inpatient treatment facilities. This network offers some of the deepest discounts available. Outpatient providers include psychiatrists, psychologists, licensed clinical social workers and licensed chemical dependency counselors. PMHM’s inpatient rates are flat per-diem fees which include all services.