Our Staff



Claudia M Henningson, LTC, ABA, EA President

Claudia joined Landmark Tax Service in 1989 and in 2005 purchased the tax business from Jim Hasenkamp. She serves as President of the firm and as Designated Consultant for the tax practice. She earned her Licensed Tax Consultant's designation in 1994, and her Enrolled Agents designation in 2005. As an Enrolled Agent she is licensed to practice before the Internal Revenue Service.

Claudia specializes in income tax planning, income tax return preparation, and all aspects of bookkeeping and payroll services for individuals and small businesses. She also enjoys visiting new businesses in Umatilla County and the surround areas to help set up accounting procedures to meet the needs of that particular business.

When Claudia is not working she enjoys every aspect of the outdoors, from working in her yard to four wheeling and camping in the mountains. Her greatest joy is her family which includes her husband, two sons and their wives, and six beautiful grandchildren.



Lynne McDougall

joined our family in 2000 as office manager. She came to us with 16 years of experience in the insurance industry. She graduated from Blue Mountain Community College with an Associates degree in Business. Lynne not only manages the office but handles a good share of the payroll for numerous clients. Lynne family includes a husband and two beautiful daughters. When she is not working she enjoys spending time with her family.



Carrie Rodda

began working with us in 2004 and has joined our staff every tax season since. Carrie helps with appointments and client support. She does an excellent job at meeting the needs of both our staff and employees. Carrie and her husband, Andy have a home in the country and she enjoys gardening and raising Koi.




Roxanne Baird

I joined Landmark Tax Service in December 2016, and have enjoyed every moment working with a great team. I come with 30+ years of experience in the accounting field, with several different types of businesses. I have always loved helping companies get their finances organized and see where they could save money.
My family includes a husband and five kids and 17 grandchildren. (Two sets of twins) When I am not working I enjoy spending time with our kids and grandkids.