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Thank you for visiting my website.

Mark S. Flieg, CPA PC is a full-service accounting firm serving clients throughout the area, dedicated to providing my clients with professional, personalized services and guidance in a wide range of financial and business needs.

On this website, you will find information about Mark S. Flieg, CPA PC, including my list of services. I have also provided you with online resources to assist in the tax process and financial decision-making. These tools include downloadable tax forms and publications, financial calculators, news and links to other useful sites. Whether you are an individual or business in or around Saint Louis, Mark S. Flieg, CPA PC has years of valuable experience assisting professionals with their accounting needs.

I welcome any questions or comments you may have. Feel free to contact me at any time:


  • Telephone...
  • (314) 846-5211
  • Fax...
  • (314) 846-8857
  • Mark S. Flieg, CPA PC
  • 2569 Christopher Oaks Ct
  • Saint Louis, MO 63129

You can also send us a message directly through the contact page of this website.