Back to top

About Us

Background

Oster Professional Group, CPA's (OPG) operates two offices located in the eastern Oregon communities of John Day and Burns. OPG offers a well balanced mix of services divided between taxation, audit, accounting and advisory services. See "Services" for more detail.

OPG performs audits for numerous Oregon counties, cities, school districts, and other private and quasi-public entities. The accounting and advisory component of the practice focuses primarily on agriculture, timber, and wood products industries, but includes a broad spectrum of other businesses, including retail. The tax portion of the practice is significantly linked to the accounting and advisory services and includes a large number of individual and business tax clients.

 

History

 

OPG was first established in Burns, Oregon in 1963 by Arlie W. Oster and operated under four other partnerships before forming Oster and Arntz in 1989, predecessor to OPG. In December 1991 the John Day office was opened to serve a growing client base in Grant County, Oregon. The corporation was formed on June 1, 1992 to facilitate the orderly transition of firm ownership. On January 1, 1993, Robert M. Armstrong and George W. Wilber acquired 100 percent of all outstanding shares of stock of the corporation, one half each. Mr. Oster continued to serve the firm as a consultant and employee until his death in 1998. On January 1, 1997, OPG purchased the John Day accounting practice of David W. Freeman, CPA, PC. Mr. Freeman continued to serve the firm as a consultant and employee until his departure on January 5, 2002. On July 1, 2009, OPG acquired the John Day accounting and auditing practice of Brian Whitman, CPA, PC. On January 1, 2012, Jessica A. Knowles acquired 10 percent of the outstanding shares of Mr. Armstrong. The following year, January 1, 2013, Mitch T. Saul acquired 10 percent of the outstanding shares of Mr. Armstrong. On December 31, 2013, Kari J. Ott and Cara R. Wilber each acquired 12.5 percent of the outstanding shares of Mr. Wilber. Also on December 31, 2013, Oster Professional Group, CPA's, PC was converted to Oster Professional Group, CPA's, LLP and all ownership interests in the LLP were transferred to OPGCPA, PC (Grant County) and GW Wilber, CPA's, PC (Harney County). The two offices will continue to operate as Oster Professional Group, CPA's, LLP.

Our Mission

The philosophy of Oster Professional Group, CPA's is one of quality service, based on knowledge and personal attention. We take pride in the belief that no client is too small to benefit from our services, yet we have the experience and personnel to accommodate the needs of many larger, growing clients and their companies.

The shareholders and professional team members of the firm are involved in a continuing program of professional education that exceeds Oregon's State Board of Accountancy requirements. The program includes seminars of the American Institute of Certified Public Accountants, the Oregon Society of Certified Public Accountants, and other recognized groups.

All shareholders are active members of the American Institute of Certified Public Accountants and the Oregon Society of Certified Public Accountants. In addition, they are all licensed Oregon Municipal Auditors.

We recognize that our clients want and need more than just knowledge from their accounting firm. This is where OPG's personal attention comes in. We acknowledge that no one of our clients is more important than another. Each are unique and deserve the attention necessary to address those uniquenesses. We attempt to provide this attention in a manner that expresses love and compassion for all.

 

Mission Statement

OPG will be the CPA firm of choice, thriving in a complex and challenging environment. We will design pathways to success for our clients, team members, and investors, one opportunity at a time.

OPG will build value by:

  • Displaying a passion for excellent client service.
  • Providing the knowledge to translate critical information into systems for success.
  • Linking clients and team members through relationships of integrity and trust.

 

Our Team

George W. Wilber, CPA, MS, Partner, Burns Office

gwilber@opgcpa.com

Experienced accounting professional, emphasizing agriculture, government, and tourism. Experienced in individual, corporate, and partnership tax planning and preparation. More than twenty years experience in financial management and audit for operations with assets to $200 million prior to becoming a CPA. Experienced in audit of private, public, and quasi-public organizations.

Certified Public Accountant, 1992. Master of Public Affairs Finance, University of Oregon, 1989. Bachelor of Arts Business Administration, Seattle University, 1971.

Robert M. Armstrong, CPA, Partner, John Day Office

BobA@opgcpa.com

Experienced accounting professional emphasizing small business services, technology, and government. Eleven years experience in a variety of practical accounting applications for corporate and small business environments prior to becoming a CPA. Experienced in municipal and small business auditing; corporate, partnership and individual tax planning and preparation.

Certified Public Accountant, 1992. Associates of Arts Biblical Studies, Nazarene Bible College, 1984. Bachelor of Science Business Administration, Southern Oregon University, 1981.

Jessica Knowles, CPA, Partner, John Day Office

jknowles@opgcpa.com

Experienced accounting professional emphasizing small business services, personal tax compliance, and government. Nine years experience in a variety of practical accounting applications for corporate, government, and small business environments. Experienced in municipal and not for profit auditing; corporate, not for profit, partnership and individual tax planning and preparation.

Certified Public Accountant, 2010. Bachelor of Science in Business Administration from Eastern Oregon University, 2009.

Mitch Saul, CPA, Partner, John Day Office

msaul@opgcpa.com

Experienced accounting professional emphasizing personal tax compliance, business and personal tax planning, operational auditing and various small business technology and consulting services. Thirteen years experience in a variety of practical accounting applications for corporate and small business environments prior to becoming a CPA in 2012. Experienced in municipal, not for profit, and OMB Circular A-133 auditing; not for profit, partnership and individual tax planning and preparation.

Certified Public Accountant, 2012. Bachelor of Arts in Business Administration from Oregon State University, 2010.

Amy Walker, CPA, Partner, John Day Office

awalker@opgcpa.com

Accounting professional with experience in personal and business tax compliance, not for profit accounting and tax preparation, small business consulting and auditing services. Six years experience in municipal, not for profit, and OMB Circular A-133 auditing. Fifteen years of experience working in private industry prior to joining Oster Professional Group in 2009.

Certified Public Accountant 2014. Bachelor of Business Administration , University of Portland, 1994. Bachelor of Science Liberal Studies Concentration in Accounting, Eastern Oregon University, 2005.

Anna Bass, Partner, John Day Office

abass@opgcpa.com

Experienced accounting professional emphasizing in small business services and governments. Experienced in municipal, not for profit, and OMB Circular A-133 auditing; partnership and individual tax preparation. 14 years of private industry accounting experience prior to employment with OPG in 2008.

Associates of Arts and Sciences in Accounting Technology from Walla Walla Community College.

Kari Ott, CPA, Partner, Burns Office

kott@opgcpa.com

Experienced accounting professional emphasizing small business services, agriculture and governments. Experienced in helping governmental entities and small businesses establish practical and sound financial processes. Experienced in a variety of governmental, not-for-profit, and OMB Circular A-133 auditing; corporate, partnership and individual tax planning and preparation.

Certified Public Accountant and Oregon Municipal Auditor, 2010. Bachelors of Business Administration, Boise State University, 2008. Awarded Finance Student of the Year, Boise State University, 2008.

Cara Wilber, CPA, Partner, Burns Office

cwilber@opgcpa.com

Experienced accounting professional emphasizing small business services, agriculture and governments. Experienced in a variety of practical accounting applications for corporate and small business environments. Experienced in municipal, not-for-profit and OMB Circular A-133 auditing; corporate, partnership and individual tax planning and preparation.

Certified Public Accountant and Oregon Municipal Auditor, 2010. Bachelor of Science in Accounting and Bachelor of Science in Business Administration with an emphasis in International Business, Oregon State University, 2008.

Lauri Armstrong, Office Manager, John Day Office

larmstrong@opgcpa.com

Office manager and experienced accounting professional specializing in payroll services, account management, and small business, not for profit, and government fiscal services. More than twenty years of experience in these practices, all for OPG.

Doreen Woodworth, Office Manager, Burns Office

dwoodworth@opgcpa.com

Experienced accounting professional specializing in payroll services, account management, and bookkeeping. More than twenty five years of experience in these practices, all for Oster Professional Group. More than twenty years of office managerial experience, stepping into the Burns office manager's role in 1993.

Debbie Arntz, MBA, EA Burns Office

darntz@opgcpa.com

Experienced accounting professional emphasizing personal tax compliance, not-for-profit accounting and tax preparation, small business consulting and auditing services. Six years experience in practical accounting and tax preparation, municipal and not-for-profit auditing and small business accounting and payroll services. Twenty years experience in not-for-profit accounting and agricultural business practices.

IRS Enrolled Agent, 2015. Masters in Business Administration, Finance and Accounting, Regis University, 2009. Bachelor of Science in Business Administration, Eastern Oregon University, 2006.

Kathleen Dunten, Burns Office

opgburns@opgcpa.com

Joined OPG as a receptionist and secretary in February of 2015. Twenty-two years working in an elementary school setting, ten of those years as a school secretary/office manager.

Link's School of Business, 1973. Treasure Valley Community College, 2005.

Barbara Hicks, John Day Office

bhicks@opgcpa.com

Experienced accounting professional specializing in payroll services, account management, small business and not for profit fiscal services. More than thirty five years of experience in both private and public accounting.

Chandra Holliday, John Day Office

Melanie Swann, Burns Office

mswann@opgcpa.com

Accounting professional with audit and tax experience. Audit and tax team member, specializing in municipal and non-profit engagements. Prior experience as an insurance agent handling all aspects of customers' insurance needs.

Janae Trindle, Burns Office

jtrindle@opgcpa.com

Accounting professional with experience in office administration, accounts payable, bookkeeping, and payroll services. Background includes event planning, project organization, inside sales, and grant writing in addition to aforementioned accounting skills. More than 15 years of private industry accounting experience prior to joining OPG in February of 2015.

Bachelor of Arts, Business Administration, Eastern Oregon University, 1997.

Kyle Wood, John Day Office