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 1,745 practicing addiction psychiatrists. Broken out by state, addiction psychiatry doctor density in Alabama is 11, in Alaska is 1, in Arizona is 39, in Arkansas is 10, in California is 217, in Colorado is 36, in Connecticut is 56, in Delaware is 8, in District of Columbia is 14, in Florida is 111, in Georgia is 52, in Hawaii is 19, in Idaho is 3, in Illinois is 72, in Indiana is 24, in Iowa is 10, in Kansas is 12, in Kentucky is 23, in Louisiana is 28, in Maine is 12, in Maryland is 51, in Massachusetts is 84, in Michigan is 65, in Minnesota is 34, in Mississippi is 14, in Missouri is 26, in Montana is 5, in Nebraska is 12, in Nevada is 13, in New Hampshire is 8, in New Jersey is 50, in New Mexico is 16, in New York is 259, in North Carolina is 52, in North Dakota is 3, in Ohio is 69, in Oklahoma is 11, in Oregon is 12, in Pennsylvania is 110, in Rhode Island is 14, in South Carolina is 25, in South Dakota is 2, in Tennessee is 44, in Texas is 118, in Utah is 3, in Vermont is 6, in Virginia is 50, in Washington is 32, in West Virginia is 13, in Wisconsin is 44, and in Wyoming is 2.