The national directory maintained by Postpartum Support International lists five inpatient perinatal psychiatric programs in the United States. A family in Phoenix, Denver, Houston, Miami, Detroit, Seattle, or Philadelphia has no in-state inpatient perinatal psychiatric unit. The confirmed fact is that five U.S. hospitals operate inpatient perinatal psychiatric units and 45 states have none. Frequently Asked QuestionsHow many inpatient perinatal psychiatric units are there in the United States? U.S. perinatal inpatient units support infant visitation, often with extended hours and private rooms for lactating patients, but do not admit the baby overnight.