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Meet Our Staff

We do Accounting in Aurora, CO

Mark Christiansen Associates LLC

We Love Accounting

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Mark Christiansen, 
Owner/Accountant/Insurance Agent

Mark established Mark Christiansen Associates, LLC in 1986.  Mark focuses primarily on providing creative, cutting edge tax, accounting and estate planning to business entrepreneurs and other individuals. Mark brings 30 years of experience and an extensive background in tax and accounting for a wide variety of small and large businesses including non-profit organizations. Mark has maintained his insurance license and provides annuity and life insurance service to his customers.

Mark is a graduate of Regis University, Denver, Colorado and has enjoyed being in public accounting for over 30 years. He established Mark Christiansen Associates, LLC in 1986 specializing in tax, bookkeeping and payroll services to small business owners and individuals. Mark is a member of the National Society of Accountants. Mark enjoyed 23 years of teaching as a faculty member at Aurora Community College.

Mark is a single dad. When Mark is not at the office, he can be found enjoying the outdoors on the golf course.  He has celebrated 8 hole in ones at various golf courses.  Mark enjoys travel and vacationing with his family.


Suzanne Marquez, Accountant/Bookkeeping/Payroll

Suzanne is a accountant, bookkeeper and payroll specialist at Mark Christiansen Associates, LLC where she primarily focuses her attention on daily/weekly bookkeeping and payroll services. Suzanne also meets customers needs by making use of her accounting and tax experience as well . Suzanne has been a true asset to both Mark Christiansen Associates, LLC and to our clients since 2004.

Suzanne has 45 years of accounting, payroll and tax experience with 30 of those years as owner of her own firm. Her experience has included a variety of small business and experience with both the construction industry as well as oil and gas finance. Suzanne has taught college level accounting, management and finance. She graduated from the University of Chicago. Suzanne is a member of the National Accountant Society, National Bookkeeper Association and is a Certified Toastmaster.

Suzanne enjoys travel and family.

Arlene Pizarro 

Arlene has been working with Mark Christiansen Associates,LLC since her Junior year in high school. She has a bachelor’s degree in computer science and plans on adding an Accounting degree. Arlene holds the title of Executive Assistant supporting Mark and Suzanne. She is experienced in Quick books, Tax Preparation software. Some of her duties include managing the phones and working directly with clients.

Arlene has become a valuable addition to the Mark Christiansen Associates, LLC team. Her spare time is spent on her scholastic studies, fishing, reading a good book and jig saw puzzles.

Get in touch with Mark Christiansen Associates LLC

2851 South Parker Road Suite 1020, Aurora, CO 80014
Call Us: (303) 745-7337 • Fax: (303) 745-6609