Nathan Isenberg

Outsourced Accounting Services Leader

Nathan Isenberg, CPA, CFP®, is the lead for Sikich’s Outsourced Accounting Services for Small and Medium Sized businesses. Nathan oversees this service line to ensure the practice meets its operational and growth goals. Throughout his career, he has focused extensively on the medical, healthcare and real estate industries, providing support in business valuations, income tax planning and return preparation.

Nathan is a central Illinois native, who enjoys playing in several community recreational sports leagues, participating in high school youth ministry programs, and spending time with his wife, Hannah, and son, Levi.


  • Washington Rotary, Member
  • Illinois State University & Illinois Central Community College, Department of Accounting Advisory Boards
  • Leisure Acres, Board Member

Education & Licenses

  • Master’s Degree in Accounting, Illinois State University
  • Bachelor’s Degree in Accounting, Illinois State University
  • Certified Public Accountant (CPA)
  • Certified Financial Planner® (CFP®)