Who We Are: The Team
“My name is on the door, but we work as a team.”
—JoAnn Cassell, Founder and CEO
With 100+ years of combined accounting and auditing experience, the Cassell Plan Audits staff brings big-firm cross-industry skills and expertise with a small firm’s warmth and individualized attention.
Purposely designed as a title-free environment with minimal hierarchy, JoAnn is the sole staff member with a title (as required by law). Our structure streamlines audits by removing layers of approvals and keeps communications direct and easy.
JoAnn Cassell founded Cassell Plan Audits in 2013. In the 10+ years since, she has cultivated a well-deserved reputation as the “friendly auditor,” keeping the client’s process as pain-free and accessible as possible. She’s personally vetted and curated a group of friendly Auditor Extraordinaires to meet her clients’ needs and credits her team wholeheartedly for her firm’s consistent success.
Ready to put your 401(k) audit in expert hands? Let’s talk.
JoAnn Cassell
CEO and founder of Cassell Plan Audits, JoAnn brings 30 years of public accounting experience, including 20+ years specializing in qualified plan audits. Her memberships and affiliations include:
American Institute of Certified Public Accountants (AICPA), and member of its Employee Benefit Plan Audit Quality Center.
Illinois CPA Society (ICPAS), member of its Employee Benefit Task Force and Employee Benefit Plan Conferences Planning Committee.
American Society of Pension Professionals and Actuaries (ASPPA) with a designation of Qualified 401(k) Administrator (QKA). Previously served as the Trustee of its Benefits Council, Chicago (ABC), and as President and VP of the Membership Committee.
JoAnn lives in St. Charles with her family. When not in the office, she travels, runs marathons, and spends time on the water.
Kimberly R. Townsend
Kim earned a Bachelor of Science degree from Madonna University in 2005. Then, after working as a corporate financial consultant for four years, she returned to school to focus on accounting and earned a second degree in business administration with a concentration in accounting from Baker College in 2012.
Before joining Cassell Plan Audits in 2021 as an auditor, Kim worked in corporate accounting for nearly a decade, acquiring a broad range of financial skills and accounting experience, including auditing employee benefit plans. Throughout her career, her goal has been to help employers achieve successful growth. At Cassell Plan Audits, she brings her advanced accounting skills to audits of financial statements and works directly with clients during the auditing process, helping to ensure their needs are met.
Kim lives in Plymouth, Michigan, with her husband and two sons. Outside work, she enjoys yoga, traveling, and cooking—specializing in authentic Neapolitan pizza.
Jennifer Pettis
Jennifer holds a master’s degree in Accountancy from the University of Illinois at Urbana-Champaign and is a registered CPA in Illinois. She joined Cassell Plan Audits in 2014 with 3+ years of public accounting experience specializing in qualified plan audits. She is passionate about working with clients to find creative and workable solutions to compliance issues.
Jennifer lives in Bloomington with her husband and enjoys reading, playing cards, and exploring new places.
Anne Kozlowski
Anne received her bachelor’s degree in Accountancy from Elmhurst College and is a registered CPA in Illinois. She brings 20+ years of experience as an auditor, accountant, and tax professional in public accounting, working with corporations and nonprofits in many industries to assist with budgets, cash flow, forecasting, and audits. She is certified by the American Institute of CPAs in Intermediate Employee Benefit Plans Audit and Advanced Defined Contribution Plans Audit.
A long-time advocate for clients throughout Illinois, she specializes in audits of qualified plans. She lives in the Chicago area with her husband, two boys, a dog, and a cat.
Kaisa Davis
Kaisa brings 15+ years of cross-industry experience in accounting, audits, and internal controls. She graduated from Northern Illinois University with a Bachelor of Science in Accountancy. After 5+ years as a senior auditor for a public accounting firm, she moved over into internal auditing and corporate accounting for 10+ years at a publicly traded company and multiple manufacturers.
Kaisa returned to public accounting with Cassell Plan Audits in 2019. She is passionate about getting her clients across the country the support they need. They, in turn, appreciate her approachable and easygoing nature.
Kaisa is currently preparing to sit for the CPA exam. When she’s not studying, she knits, reads, and cares for her husband, kids, and a veritable ZOO of household pets.
Jen Williamson
Jen earned her bachelor’s degree in Accounting at the Gies College of Business, University of Illinois Urbana-Champaign. She brings 25+ years of experience as an auditor and quality control specialist working across diverse industries, as well as a manager and trainer to other auditors.
An expert in accounting and audit standards, Jen has a passion and a real knack for the technical research required to resolve the most complex regulatory and financial issues. As an auditor at Cassell Plan Audits, she looks forward to concentrating on this area of her expertise.
Jen lives in the Greater Chicago Area with her partner and two sons.
Maria Arriaga
Maria earned a Bachelor of Science in Accounting with a minor in Finance from Lewis University. A certified Enrolled Agent, she is also CPA eligible. With Staff Accountant experience from 2017, Maria has worked for local and nationwide accounting and tax preparation firms.
Maria joined Cassell Plan Audits in January 2023. Her finance background gives her deep insight into how investments and securities can impact a 401(k) ‘s performance and compliance needs. Bilingual in English and Spanish, she also brings these language skills to her role.
Maria loves to travel wherever she can near the sea. Her latest adventure was swimming with the dolphins off the coast of Mexico.
Stella
Stella is the team mascot. A golden doodle with a big heart, she is now five years old. Once a fixture at the office, offering affection, accepting head scratches, and keeping morale high, these days, you’ll find her curled up at home. She is still our official “Office Dog Extraordinaire,” and Cassell Plan Audits wouldn’t be the same without her.