Firm Profile

John T. Grebe, CPA, CFP, President

Since earning a degree in Accounting from Eastern Illinois University in 1980, John has worked in various financial disciplines ultimately focusing on Public Accounting.  Obtaining his CPA certification in 1982, he initially worked as a corporate financial analyst and internal auditor.

After gaining invaluable experience in the corporate world, John developed a desire to become more involved with the personal side of accounting – helping clients obtain financial security and success.  Taking steps to realize this dream, he earned his Certified Financial Planning (CFP) designation in addition to obtaining his securities license (Series 6, 7 and 63) in 1988.

Making the move from corporate to small business, John joined the Wheaton, Illinois CPA firm of Volpe & McConnachie in 1991.  Shortly after joining the business, he became an owner/partner.  In 1998 he secured full ownership, changing the name of the firm to Grebe & Associates, PC.

John and his wife Dawn have three sons and reside in Wheaton, Illinois.  He is an active community member and enjoys coaching, running, cycling and reading.

Professional Memberships:  Illinois CPA Society, American Institute of Certified Public Accountants.  

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Jana L. Blaschak, CPA, Senior Manager, Accounting Services

Earning her Bachelor's Degree in Accounting and CPA in 1984 from Northern Illinois University, Jana has been at Grebe & Associates since 2000.  She is an expert in QuickBooks, corporate accounting, and tax preparation. Jana lives with her husband in Naperville, Illinois.

Marie McGrath, CPA, CMA, MBA, Senior Manager, Tax

Earning her Bachelor's Degree in Accounting and MBA from Northern Illinois University in 1989, she has also earned her CPA and CMA.  Marie has been at Grebe and Associates since 2015.  She is an expert in corporate and individual tax preparation, as well as small business and corporate accounting.  Marie lives with her husband in Bartlett, Illinois.

Cynthia Krage, Office Manager

Earning her Bachelor's degree in Business Management in 1984 from Iowa State University, Cindy has been at Grebe & Associates since 2009. Cindy lives with her husband in Sugar Grove, Illinois.

Victor Cortese, Accountant

Earning his Bachelor's Degree in 2015 from Northern Illinois University, Victor has been at Grebe & Associates since 2018.  He specializes in individual, corporate and small business accounting and tax preparation.  He lives with his family in St. Charles, Illinois.

Olena Domino, Accountant

Earning her Bachelor's degree in Accounting and Finance in 2012 from DePaul University, Olena has been at Grebe & Associates since 2014.  She has experience in public accounting, and corporate and individual tax.  She lives with her family in Downers Grove, lllinois.

Lora Bak, Accountant

Earning her Bachelor's degree in Accounting from Ohio University in 1990, Lora has been at Grebe & Associates since 2015.  She has experience in accounting and bookkeeping in various industries as well as not-for-profit.  Lora lives with her family in Glen Ellyn, Illinois.