Our Firm

To meet the needs of our clients, Mattson Gleason CPAs Ltd was established as a Minnesota CPA firm to provide accounting, tax, and business advisor services to corporations, small businesses and individuals throughout the Twin Cities. We provide quality service for our clients by staying abreast of accounting and tax law changes and by taking a proactive interest in the smooth financial management of your business. We make it our goal to understand the individual needs of every client including addressing industry specific challenges, compliance needs and standard tax practices.

Our firm was shaped by a fundamental conviction:

The best way to achieve a trusted, long standing client relationship is through hard work, one-on-one attention, and competent business advice. 

 Time has proven us right.  Since 1991, our team of smart, dedicated professionals has taken on your challenges as ours.  From start-ups to established corporations, sole-proprietors to regional firms, home-based to home builders, we have stayed true to our conviction – to provide our clients the tools and insights to build and sustain successful businesses.

We often describe our practice as “small business with a tax emphasis”.  You can rely on us to know how the current tax laws impact your situation.   This is where our commitment to the details pays off. Often the details can make the difference between seeing black or bleeding red.

We are committed to being your most trusted and valued advisor.  We do that by offering business services that go beyond the preparation of financial statements and tax returns.  Because we take the time to know you personally, our services can be tailored to your unique needs.  Whether its choosing (or changing) your entity type, making sure you understand the advantages (and limitations) of your current choice, structuring a sale to minimize taxes, or discussing exit strategies, we will become the most valued member of your business team. 

Mark S. Gleason, CPA

Mark Gleason has been a Certified Public Accountant since 1977 and has been helping taxpayers manage their tax burdens for over 25 years. Over the course of a dozen years working for large national and regional CPA firms, Mark performed tax planning, tax research and tax compliance functions across a broad spectrum of industries including retail, manufacturing, construction, real estate, professional services, and wholesale. He has significant experience working with estates and trusts and with taxpayers needing IRS representation. His focus has always been on helping small, closely held businesses and their owners manage their federal and state tax income and employment taxes.

Mark has been teaching tax and accounting classes at Metropolitan State University since January of 1992. He has taught Business Income Taxation, Individual Income Taxation, Financial Accounting, Financial Reporting and Advanced Financial Reporting at Metropolitan State.

Mark is a former member of the Minnesota House of Representatives (1998 – 2001) representing District 63B (Richfield and South Minneapolis) and serving on the following legislative committees: Governmental Operations, Taxes, Regulated Industries, Local Government and State Government Finance. He serves as an arbitrator for the Financial Industry Regulatory Authority (FINRA).

Mark has a BA in Business Administration with an emphasis in Public Accounting from the University of St Thomas (1975) and a Juris Doctor degree from William Mitchell College of Law (1981). He has been a Certified Public Accountant since 1977. Mark is a member of the Minnesota Society of Certified Public Accountants and the American Society of Tax Problem Solvers.

Mark is married, has two daughters, and five grandchildren. His favorite activities include cooking, brewing, hiking, reading, and trying to learn Spanish.. Mark loves rock ‘n roll music and frequently attends live performances. You will see him walking or biking around Lake Harriet or Lake Calhoun on nice days.

Keith Mattson, CPA – President

Keith Mattson is the founder of Mattson & Radziej, Ltd.; a public accounting firm located in Lakeville.

He graduated from the University of Minnesota (with distinction) with an accounting degree in 1980.  He started his public career with Fox & Company (now Grant Thorton), but left to join a smaller firm in 1984.  He became a partner in 1989, then left to form his own practice in 1991.  Mattson & Radziej, Ltd. now employs 6 CPA’s, serves over 300 small businesses and over 650 individuals.

Keith describes his practice as “small business with a tax emphasis”.  He is a teaching CPA, which means he can explain accounting in terms you can understand.  Keith is also a Certified Professional Advisor for QuickBooks, an affordable accounting package which can handle your billing, receivables, payables and payroll.

Main Number 952-435-6630 x18
Fax 952-435-3642
Email keith@mattson-cpa.com



Lou Ann Winchell, MA, Acctg CPA – Senior Accountant

Lou Ann Winchell graduated from the University of Dubuque in Accounting and Business Administration in December 1990.  She sat and passed the CPA exam in May 1991; and she completed her Master of Accountancy at the University of Iowa in 1993.

Lou Ann started her accounting career in pension accounting and casino accounting while teaching adjunct at the local colleges in Dubuque, IA and surrounding areas.  She relocated to Minnesota in 1997 where she began her public accounting career with Mattson & Radziej, Ltd.

Lou Ann volunteers with 360 Community, the Lakeville North Band Boosters, and the City of Lakeville’s Park and Recreation Department.

Main Number 952-435-6630 x19
Email LouAnn@mattson-cpa.com



Nancy Savstrom, CPA – Senior Accountant

Nancy Savstrom graduated from the Carlson School of Management, University of Minnesota with a Bachelor of Science in Accounting.  She’s been a licensed CPA since 1999.

Nancy started her accounting career with her own business before and during college.  After college, she worked in the tax department of a national public accounting firm for almost nine years before joining Keith Mattson in November 2005.  She specializes in business and individual tax returns.

Nancy and her family have lived in Lakeville since 1981 and enjoy being involved in the community.  She is the Community Service Co-chair of Lakeville Rotary and volunteers for the Taste of Lakeville.

Main Number 952-435-6630 x20

Email:   Nancy@mattson-cpa.com

Janice Krall, CPA – Senior Accountant

Janice graduated from the University of Minnesota, Carlson School Of Management, with a Bachelor of Science in Accounting in 1995.  She passed the CPA exam in 1996.

Janice started her accounting career working for a national public accounting firm based out of Chicago.  She continued her accounting work on a part-time basis for a small public accounting firm in Edina while raising a family.  After working there for fifteen years and one year for a Farmington public accounting firm, she joined Mattson & Radziej, Ltd (now Mattson Gleason CPAs Ltd) in November, 2013.

Janice volunteers at her church in varying capacities.  In her spare time she enjoys spending time with friends and family, reading and staying active.

Main Number 952-435-6630 x17
Email Janice@mattson-cpa.com

Marsha Wageman – Administrative Assistant

Marsha enjoys the clients who call or come in our doors.  She is ready to direct you to the best person to answer your questions, or to make sure your message is delivered and responded to timely.

Marsha (and Jerry) are happy to tell you about their granddaughter Summer (Mom is their daughter Jill); or the houses Jerry builds or remodels.

Main Number 952-435-6630 x10
Email Marsha@mattson-cpa.com





Sean Bulleigh, CPA – Tax Professional

Sean Bulleigh graduated from Oklahoma State University with a Bachelor of Science in Statistics in 2014 and a Master of Science in Accounting in 2015.  Sean passed the CPA exam in the fall of 2015 and was licensed as a CPA in December, 2016.

Sean spent the first two years of his accounting career in the tax department of a large national public accounting firm in Tulsa, Oklahoma. He recently joined Mattson Gleason CPAs Ltd in December, 2018.

Sean lived in Lakeville until he moved to Oklahoma for college in 2010. He is happy to have moved back to Lakeville in 2018 and is excited to work for Mattson Gleason serving clients in the Lakeville area.

Main Number: 952-435-6630 x23

Email: Sean@mattson-cpa.com


Kyle Voelker


Jon Wong – Staff

Jon graduated from the University of St. Thomas with an accounting degree in 2016. He finished his 150 credit requirement in the following summer, and is currently sitting for his CPA exam.

Jon has worked two tax seasons in his professional career and will be going into his third under Mattson Gleason.

(insert personal stuff here or not needed?)

Main Number: 952-435-6630 x21

Email: Jon@mattson-cpa.com




“I am so thankful I have connected with Mark and would refer his services to my closest friend! He is an expert in his field, reliable and just a good person to know!  I rate him A+!”
Service Category: Accountant
Year first hired: 2010
Top Qualities: Great Results, Personable, Expert

(As posted on LinkedIn by Nancy S on 1/11/2011)



Mattson Gleason CPAs Ltd

10627 West 165th Street
Lakeville, MN 55044

Tel: 952-435-6630
Fax: 952-435-3642


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