RW Hickman PC. Raymond W Hickman CPA is located in Springfield IL but also works with clients from Chatham, Williamsville, Rochester and more for over 20 years. If you are looking for a company that can provide you with accounting, tax & auditing services, we are the company for you. We work with individuals and businesses as well. Our services include but are not limited to: *Accounting *Auditing *Tax Preparation *Business Consulting For top notch service, contact us today. We look forward to working with you.