- Berkley & Iselin, S.C. is a certified public accounting (CPA) firm located in Racine, Wisconsin. Our staff consists of three CPA owners; Bob Berkley, Mike Iselin and Darlene Lotz; four staff accountants, a computer consultant and a receptionist. We offer services in the areas of Accounting, Management Advisory Services (MAS) and Tax for both business and personal clients.www.bicpa.com