1010 East Main, Suite C & D, Bozeman, MT 59715. Phone: 406-585-9291, Fax: 406-219-3336.       admin@mcdermottfinancial.com            


A FULL SERVICE ACCOUNTING FIRM -- Certified Public Accountants -- Bozeman, Montana

Christi Coubrough - CPA

Christi is a Certified Public Accountant who fearlessly leads the McDermott Financial Team. 

Dan Ritter Jr. – CPA

Dan Ritter is a Certified Public Account that graduated with a Master of Professional Accountancy Degree from Montana State University in 2017. Before joining our team in September of 2016, he served seven years as an officer in the United States Marine Corps. Dan enjoys hiking, fishing, and spending time with his wife and two children.


Joey Koelsch -  Accountant

Joey Koelsch joined McDermott Financial in July 2006.  He received his Bachelor’s Degree in Accounting from Montana State University in 2012.  His primary responsibilities at McDermott Financial are bookkeeping and tax preparation.  Joey was born in Spokane Washington and came to Montana in 2002 for snowboarding, fly fishing and all other outdoor activities.

​Kodi Kingsbury - Office Manager


Laura Middel  - Intern

​Laura joined McDermott Financial Services in May 2018. She received her Bachelor’s Degree in Business Finance in May 2017, and is currently enrolled in the Master of Professional Accountancy program at Montana State University. Laura played college tennis for four years, and is now the graduate assistant coach for the women’s tennis team at MSU. She is a very driven individual, and has a passion for sports and travel. 

​Brenda Slingsby - Payroll Manager

Brenda joined McDermott Financial Services in March 2017. Before joining our team, she spent 5 years at James Bond Family Dentistry starting out as an insurance processor and spending 4 years as the office manager.  In her free time, she spends her time training for half marathons and marathon races she runs throughout the year. When she isn’t running, she is spending time with her two Australian shepherds finding new places to explore in the Gallatin Valley area. 

Elliot Heumier - Accountant

A Bozeman native, Elliot Heumier graduated with highest honors from Gallatin College with a degree in Bookkeeping. Before joining our team, he spent 2 years volunteering as the CFO of a Tanzanian non-profit – a position in which he still is privileged to serve. He looks forward to gaining the experience and training necessary to keep growing in his passion for international non-profit accounting. When he’s not at his desk, Elliot enjoys playing his piano, volleyball, hiking and running, and serving at his church.

Jesse Corbo - Accountant

Jesse graduated from Montana State University with a Bachelor’s degree in Business, major concentration in accounting with a minor in business finance.  He joined McDermott Financial Services in August of 2015 after relocation from Whitefish, MT to relaunch his academic career. Before joining our team he spent 13 years working for Safeway. Jesse is eager to learn and gain the technical skills needed to grow in his new career. Jesse enjoys the outdoor adventure activities that Bozeman has to offer and spending time with his family and friends.

Michael Henry - CPA

Mike Henry is a Certified Public Accountant that graduated with a Masters of Professional Accountancy from Montana State in 2001.  Prior to coming to MFS, Mike spent 11 years working for Anderson ZurMuehlen, Montana's largest accounting firm.  He specializes in taxes and consulting for individuals and small to medium size businesses.  Mike works hard to get to know his clients and their individual needs in order to provide them with the best service possible.  Mike, his wife Amanda, and two boys, Charlie and Willie, enjoy spending time together and are always up for an adventure.

Copyright 2016, McDermott Financial Services, PC. Certified Public Accountants, Bozeman, MT. All rights reserved.

Desirae Fasching - Office Manager

​Desirae assists with management, steering the MFS ship, and is one of the cheery faces at the front desk.  Desirae joined McDermott Financial Services in November of 2017.  She moved to Bozeman in August of 2016 to continue her education through Gallatin College/Montana State University.  In her free time, Desirae enjoys snowboarding, fishing, hiking and spending time with her family and friends.​​