In business for more than 35 years, Kolmac Clinic is a treatment center for alcohol and drug addicts. Based in Silver Spring, Md., the center specializes in ambulatory detoxification, intensive out-patient addiction treatments, rehabilitation and continuing care service. Kolmac Clinic organizes weekly group sessions for the patients relatives. The center accepts insurance from several insurance companies, such as United Behavioral Health, United Healthcare, CIGNA, Kaiser and more. The Kolmac School is a division of Kolmac Clinic.