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John Day Office

Back Row: Mitch Saul, Jessica Knowles, Bob Armstrong, Barbara Hicks, and Emma Winkelman. Front Row: Amy Walker, Anna Bass, Lauri Armstrong, and Chandra Holliday.

Burns Office

Back Row: Debbie Arntz, Janae Trindle, Kari Ott, Melanie Swann, Cara Wilber, and Kathleen Dunten. Front Row: Doreen Woodworth, George Wilber.


We are a full-service accounting firm dedicated to providing our clients with professional, personalized services and guidance in a wide range of financial and business needs.

On this website, you will find information about our firm, including our list of services. We have also provided you with online resources to assist in the tax process and financial decision-making. These tools include downloadable tax forms and publications, financial calculators, news and links to other useful sites.

We welcome any questions or comments you may have. Feel free to contact us at any time:

Strawberry Creek – by Robert Brown We were very pleased that local photographer Robert Brown granted permission for us to use his beautiful exposure of Strawberry Creek Wilderness Ares for our website. We encourage you to visit his gallery through his website at

  • Telephone...
  • (541) 575-2717
  • Fax...
  • (541) 575-2718
  • Oster Professional Group CPA's, LLP
  • 101 NE 1st Avenue
  • John Day, OR 97845

You can also send us a message directly through the contact page of this website.