There are approximately 106,000 doctoral-level licensed psychologists in the United States.
The Psychology Interjurisdictional Compact, or PSYPACT, permits licensed psychologists in states that have adopted PSYPACT to see patients in other compact states legally — via telepsychology, or in person on a temporary basis — without maintaining licensure in the other states. Currently, 12 states have passed legislation allowing PSYPACT: Arizona, Colorado, Delaware, Georgia, Illinois, Missouri, Nebraska, Nevada, New Hampshire, Oklahoma, Texas and Utah. Illinois legislation will not go into effect until 2020. Additional information about PSYPACT is available through the Association of State and Provincial Psychology Boards (ASPPB).
As of 2019, New Mexico, Louisiana, Illinois, Iowa and Idaho allow licensed psychologists trained in clinical psychopharmacology to prescribe certain medications for the treatment of mental health disorders. Eligible psychologists may also prescribe in the Department of Defense, Indian Health Service and the U.S. Public Health Service. In addition, there are many efforts within the field to expand this authority.