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Helpful Info

About Chigbrow Ryan & Company, Chartered

Originally established in Boise in 1985, the Chigbrow Ryan and Company, Chartered draws on its history and foresight to provide ethical and thorough financial, accounting, management advisory and tax services to the individuals and small businesses of Southern Idaho.

As we all know, taxes are inevitable for all individuals and businesses. Inevitable doesn’t have to mean painful and should never mean unforeseen. By working with you to plan ahead, Chigbrow Ryan & Co., Chtd. can help minimize the tax crunch and help you to be tax-efficient, both as an individual and as a business. Not only used for tax planning, we add value by producing interim and annual financial statements on a compiled, reviewed, or audited basis—giving you the right information on time, to make important business decisions.

We have years of experience preparing all types of income tax and information returns. We prepare partnership and corporate returns for a wide range of industries and all sizes of businesses. We prepare trust, estate and gift returns. Finally, we have extensive experience with not-for-profit entities from the initial application to the annual tax returns.

Our Staff



Cordell Chigbrow
Cordell R. Chigbrow, CPA, MSAT
Cordell was born in Boise and received his Master in Accountancy-Taxation from Boise State University. He has been practicing with Chigbrow, Ryan and Company since 1996. He is a member of American Institute of CPAs, Idaho Society of CPAs and a Certified QuickBooks ProAdvisor. Cordell enjoys an active role in the community, as a Kiwanian and volunteer for many non-profit organizations.


Cordell Chigbrow
Brad Ryan, CPA, CVA
Brad was born and raised in The Dalles, Oregon. He earned his BS in Business Administration & Accounting at Oregon State University. He has been practicing with Chigbrow, Ryan and Company since 1997. He is a member of American Institute of CPAs, Boise Estate Planning Council, Idaho Society of CPAs, National Association of Certified Valuators and Analysts and the Treasurer for the Idaho Business for Education. Brad enjoys spending time with his family, all sports and volunteer coaching.


Cordell Chigbrow
Constance Carlson, CPA
Constance was raised in Washington State. She earned her BS in Biology and then pursued her CPA. She has been serving the accounting and taxation needs of small businesses and individuals for approximately 20 years. She is a member of American Institute of CPAs, Idaho Society of CPAs and is the Treasurer for the Boise Centennial Rotary Club. She stays active in her church and spends her free time enjoying the Idaho outdoors.


Cordell Chigbrow
Richard Sisson, CPA
Richard (RC) was born and raised in Buhl, Idaho. He earned a BS in Accountancy at the College of Idaho and has been practicing with Chigbrow Ryan & Co., Chtd since 2008. He is a member of the American Institute of CPAs and Idaho Society of CPAs. He enjoys spending his time with family and friends and exploring Idaho.


Cordell Chigbrow
Gian Gieri, CPA
Gian was born and raised in Albuquerque, New Mexico. He earned his bachelors of Business Administration in Accounting and Finance from the University of New Mexico. Gian started with Chigbrow, Ryan, and Co. in 2016. He is a member of the American institute of CPA's and the Idaho Society of CPA's. Gian enjoys spending time with his wife and two young children in his free time.


Cordell Chigbrow
Amy Gallegos
Amy was raised in Burley, Idaho. She attended the University of Idaho and Boise State University, where she received her Bachelor of Business Administration in Accountancy. She has been with Chigbrow Ryan & Company since 2000. She has extensive knowledge of Quickbooks, and years of experience assisting in the preparation of financial statements and tax returns for both businesses and individuals. Outside of work, she stays busy and active in the community with her husband and two children.


Cordell Chigbrow
Joan Antoine
Joan was born in Michigan and moved to Idaho in 1972 where her father retired from the Air Force. She joined Chigbrow, Ryan & Company as a Staff Accountant in 2000. She has over 30 years of experience in the Accounting field. She is proficient in the use of Quickbooks and is knowledgeable in bookkeeping and processing multi-state payroll.


Cordell Chigbrow
Becky Yates
Becky was born and raised in eastern Idaho. She earned an Associate degree in Business from Boise State University. She joined Chigbrow Ryan & Company as a staff accountant in 2004. She is highly skilled in payroll, bookkeeping, and financial statement preparation along with being proficient in QuickBooks. She enjoys spending time with her daughters and shopping.