Don Chamberlin Jr., CFEd®

President & CEO

Don Chamberlin has devoted more than 32 years as a financial advisor to helping people plan a comfortable future. He originally founded The Chamberlin Group in 2002 with the goal of  Read More

Don Chamberlin III, CFP®

Certified Financial Planner

Don III, also known by many as “DC,” is a fee based financial planner who specializes in tax planning. His core belief is that a solid holistic financial plan creates a strong foundation for a successful future.

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Jeremy Reiland, CFEI

Investment Advisor, Tax & Medicare Planning

With experience in mortgages, investments, annuities, life insurance and Medicare planning, Jeremy brought with him ten years of experience in the financial Read More

Marty Brown

Financial Planner & Investment Advisor

Marty Brown is an investment advisor for the Chamberlin Group. He holds a Series 65 license which allows him to follow his passion of  Read More

Marianne Bouras

Director of Operations

Marianne Bouras received her degree in Business Management from Concordia University in Wisconsin. She became a key member of The Chamberlin Group in 2008.
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Sarah “Chamberlin” Define

Tax Practice Manager

In 2004, Sarah Chamberlin relocated to St. Louis to join The Chamberlin Group. She has since implemented a systematic process for our tax practice that Read More

James Russell Borders

Chief Accountant

Russ has been taking care of clients’ tax and accounting needs since graduating from SIU Carbondale in 1972. After working two years at a CPA firm Read More

John Laux, EA, RTRP


John graduated from the University of Missouri with a B.S. in Accounting in 1999. After college, John worked for a local CPA firm for 4 years before Read More

Robert Joseph Define, EA


Joe has been a tax preparer since 2003. He joined The Chamberlin Group in 2008 and prepares over 800 returns annually. Joe has earned his Enrolled Agent Read More

Lynne Littiken, RTRP


Lynne previously managed a tax office for H&R Block. She worked for them for 14 years as a tax preparer, basic tax instructor and Supervisor. After leaving Read More

Marie Munton

Client Services Manager

Marie joined The Chamberlin Group team October 2015. She is a highly motivated and professional person. Her work experience includes 7 years in the medical field as a medical assistant and

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Pamela S. Kelly, MCAS

Executive Assistant to Don Chamberlin

Pam brings years of experience as an Executive Assistant from large corporations such as Scottrade, Emerson and Mercy Health System. Read More

Joanie Chamberlin

Office Assistant/Receptionist

After being a dedicated volunteer and stay at home Mom, Joanie ventured into the corporate world in 1986. She and a friend started a successful event planning business. She is happiest when working with people.
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Kelly Carter

Educational Event Coordinator

Kelly works at Elsevier full time in Journal Accounting. She has been with Elsevier for almost 15 years.  She received her Bachelor’s Degree in Business Management in 2007
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Abby Hayes Boegeman, J.D.

Estate Planning Attorney

Abigail (Abby) Boegeman was born and raised in St. Louis. She earned her Bachelor’s degree in Journalism from the University of Missouri-Columbia and her Juris Read More

Dave Austin, CPA

Chief Financial Officer

Dave began working with The Chamberlin Group in November 2016.  Through his company, Great Heights, LLC, he provides strategic, financial and operational consulting to privately-held companies.
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Susie Chamberlin

Accounts Receivable

Susie is DC’s mom and Don’s wife. She has supported our business in various functions since its founding in 2002. Currently she handles accounts receivable, banking Read More

Carolyn M. Shipman

Office Mom

Carolyn is Don’s mother-in-law and DC’s grandmother. She was Chamberlin Group’s first employee in 2003 and soon became a favorite of all our clients. She is Read More