Our Staff At Campbell & Sherbondy CPA's, we strive to obtain the accounting profession's most qualified tax and accounting professionals to meet the ever-changing needs of our diverse client base. Unparalleled in experience, our staff will provide you with the expertise required to meet all your needs.

John E. Campbell, CPA Partner John is a 1975 graduate of Clarion (PA) University with a BS in accounting.  John has more than 30 years experience in public accounting with his career focused on providing accounting and tax services to entrepreneurial businesses and individuals.  John's background includes work with various industries including healthcare, manufacturing, tax exempt organizations, and construction.  John is a member of the national and state CPA associations (AICPA & PICPA).  John serves on the boards of Greenville Area Economic Development Agency, UPMC Horizon Hospital System, Greenville Savings Bank, and Children's Aid Society of Mercer County. John can be reached by completing our Contact Us form.
Robert C. Sherbondy, CPA Partner Bob is a 1983 graduate of The Pennsylvania State University with a Bachelor of Science degree in Accounting.  Bob has more than 20 years experience in public accounting focusing on providing accounting and tax services to individuals and various businesses.  Bob is a member of the American Institute of Certified Public Accountants and the Pennsylvania Institute of Certified Public Accountants.  Bob has served on the Board of Directors for the Greenville-Reynolds Development Corporation and currently serves on the Board of Directors of the Greenville Area Chamber of Commerce, the Northern Mercer County Community Foundation, the Northern Mercer County United Way, and the Good Shepherd Center. Bob can be reached by completing our Contact Us form.
Julie L. Porter, CPA Senior Accountant Julie L. Porter is a 1999 graduate of Thiel College with a Bachelor of Arts in Accounting and Business Administration.  Julie has 7 years experience of practice in public accounting which has provided her with diverse experience in accounting, tax compliance, planning and consulting services to individuals and small businesses.  Julie is a member of the American Institute of Certified Public Accountants and the Pennsylvania Institute of Certified Public Accountants. Julie can be reached by completing our Contact Us form.
Our other staff members include Marcia D. Mahlon, Staff Accountant; Margie B. Hull, Staff Accountant; Keith E. McDonald, Staff Accountant; Beth A. Stubert, Payroll and Secretarial; and Patty J. Beatty, Payroll and Secretarial.