Irwin Siegel Agency is the premier Program Administrator of insurance products and risk management solutions for Human and Social Service Organizations. We are constantly developing new programs to meet the dynamic nature of the field. Our specialties include Developmental Disability Organizations, Addiction Treatment and Behavioral / Mental Healthcare, Youth Programs, and more. Supporting Those Who Support Others® – let us show you the difference. Irwin Siegel Agency is a series of RSG Specialty, LLC. RSG Specialty, LLC is a Delaware limited liability company and a subsidiary of Ryan Specialty, LLC. In California: RSG Specialty Insurance Services, LLC (License # 0G97516).