Addiction psychiatry is a branch of psychiatry that treats those who have addictions and related psychiatric problems. An addiction psychiatrist focuses on the evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of those with the diagnosis of co-occurring substance-related and other psychiatric disorders. Treatment of addiction combined with a psychiatric problem may involve medication and behavioral therapy techniques, along with psychiatric consultation.

Doctor density varies by specialty and location. The United States has 1,774 practicing addiction psychiatrists. Broken out by state, addiction psychiatry doctor density in Alabama is 10, in Alaska is 2, in Arizona is 39, in Arkansas is 10, in California is 219, in Colorado is 37, in Connecticut is 57, in Delaware is 8, in District of Columbia is 16, in Florida is 113, in Georgia is 53, in Hawaii is 20, in Idaho is 3, in Illinois is 71, in Indiana is 25, in Iowa is 11, in Kansas is 12, in Kentucky is 22, in Louisiana is 29, in Maine is 13, in Maryland is 52, in Massachusetts is 87, in Michigan is 65, in Minnesota is 37, in Mississippi is 14, in Missouri is 26, in Montana is 5, in Nebraska is 12, in Nevada is 14, in New Hampshire is 8, in New Jersey is 52, in New Mexico is 16, in New York is 264, in North Carolina is 52, in North Dakota is 3, in Ohio is 69, in Oklahoma is 12, in Oregon is 12, in Pennsylvania is 110, in Rhode Island is 14, in South Carolina is 27, in South Dakota is 2, in Tennessee is 43, in Texas is 118, in Utah is 3, in Vermont is 6, in Virginia is 51, in Washington is 32, in West Virginia is 13, in Wisconsin is 44, and in Wyoming is 2.