Mark is the administrative partner and a founding partner of London Witte & Company, LLP. Mark oversees the tax department where he works with corporations, partnerships and individuals involved in closely held business endeavors.

For more than 30 years, Mark has worked with a variety of industry groups including: automotive, engineering, financial, professional, service industry, manufacturing, mining, railroads, retail and wholesale distribution, medical, food service, travel services, real estate development and management.

Mark holds a certification in Indiana as a Certified Public Accountant. He is a member of the American Institute of Certified Public Accountants and the Indiana CPA Society.