About Us

Our goal is to radically enhance your expectations of professional accounting services. So whether you are a long-time customer or meeting us for the very first time, we hope you will see of the value of a professional relationship with our firm.

Our Firm & Philosophy

Founded in 1999, Kingsport CPA, PC, is a local accounting firm serving the Tri-Cities community in Northeast Tennessee. Our firm is committed to providing solutions for individual accounting, small business accounting, and non-profit accounting.

Our goal is to radically change your expectations of professional tax and accounting services through competent staff members, customized solutions, and outstanding personal service.

As we have talked with people about their frustrations regarding their experiences and attempted to respond to those frustrations, it could often be reduced down to unmet expectations. These are often related to the quality of services received or the lack of personal attention. We understand that to be relevant in a new millennium requires a complete paradigm shift. It requires a business model that revolves around the wants, needs, and expectations of each individual and business we serve. It requires comprehensive solutions, not simply a menu of accounting and tax services. Relevance requires customization and responsiveness to change, yet an unrelenting commitment to integrity, transparency, and professional standards.

As you explore Kingsport CPA, PC, consider asking yourself the following questions:

If I could change one thing related to my professional accounting and tax services, what would it be?

What would provide the greatest value to me and my business?

What do I want and expect of a professional advisor?

What is most important to me in my relationship with my accountant?

What to Expect

Whether you need a personal income tax return completed once a year, weekly payroll services, or audited financial statements, the following represents our commitments to each customer. In addition to our core values, we are committed to:

Technical Competence

We will only accept engagements for which we possess the necessary knowledge, skills, and resources to provide value for our customers and in accordance with applicable professional standards. However, if we are not able to accept a certain engagement, or portion thereof, we will recommend others within our extensive professional network who share our values and may be able to provide those services.

Reasonable Pricing Structure

Many of our services can be set up on an agreed upon fixed fee. Because these services are built upon up-front, fixed pricing, as opposed to hourly rates, you are not inhibited from seeking timely advice by the fear of a meter running endlessly. Our engagements provide ongoing access to the accounting and business advice you need. If an issue requires additional research and analysis or was otherwise unanticipated within the original scope of services, we will come to a mutually agreed upon price before the service is performed. In case that a fixed pricing is not available our hourly rates are very reasonable for the area and industry.

Service Guarantee

Our work is guaranteed to the complete satisfaction of each customer. If you are not completely satisfied with services performed by Kingsport CPA, PC, please let us know immediately about your concern. We will diligently strive in good faith to remedy the issue to your complete satisfaction.

Meet Our Team

Each member of our team plays a crucial role in our ability to deliver professional services in a welcoming environment centered around customer value and satisfaction.

Darrell Callebs

CPA

Chuck Williams

MBA Senior Accountant

Taher Kassaby

Staff Accountant

David Holbrook

Staff Accountant

Lisa Bowen

Executive Administrator

Elaine Boggs

Tax Specialist

Dwayne Green

Senior Bookkeeper 

Theresa Short

Senior Bookkeeper

Bailey Morgan

Bookkeeper

Cheyenne Toof

Administrative Assistant

Darrell Callebs

CPA

As principal of Kingsport CPA, PC, Darrell is committed to excellence and the highest ethical standards in providing professional services and personal attention by leading his clients and team members to success.

Darrell has over 25 years’ experience in personal, business, and entity tax and accounting, including audits of for-profit, not-for-profit, government and HUD entities. He holds a bachelor’s degree in accounting and is a Certified Public Accountant. Additionally, Darrell’s credentials include a Certified Global Management Accountant (CGMA) designation from the AICPA and a Not-for-Profit Certificate II credential from the AICPA for demonstrated proficiency in matters affecting not-for-profit organizations.

Darrell lives in Kingsport with his wife and daughter and enjoys cooking, camping and never-ending conversations about fishing. He gives back to his community using the resources and blessings received and serves as a volunteer with his church.

Chuck Williams

MBA Senior Accountant

Chuck has over 20 years’ experience in accounting with the majority being in public accounting. He has experience in audit, attest, and taxation for a wide variety of industries, with a primary focus in not-for-profit entities. Chuck received his Bachelor’s degree and Master’s of Business Administration from East Tennessee State University and is currently studying for the CPA exam.

Taher Kassaby

Staff Accountant

Taher has earned a strong reputation among clients for being efficient, effective, and responsive. He graduated from the Academy for Science and Technology in 2006 with a degree in accounting and has experience in personal, business, and entity tax. He has passed all sections of the CPA exam and is close to becoming a licensed CPA, and is a member of several professional organizations including TSCPA and AICPA. Taher lives in Johnson City and enjoys spending time with his wife and their dog.

David Holbrook

Staff Accountant

David is a CPA with over 40 years of accounting experience. He is experienced with Construction Contractors, Non-Profits, Legal and Medical professionals. David is an Air Force Veteran, a graduate from Milligan College with a bachelor’s in business administration, and a graduate from the University of Southern Mississippi with a Master of Professional Accountancy.

Dwayne Green

Senior Bookkeeper

Dwayne truly enjoys working with people and helping them with their financial position. He received an Associate’s degree in Accounting and Bachelor’s in Business Management from Miller-Motte College.

Dwayne is originally from West Virginia and moved to east Tennessee in 2018. He has been married for 18 years with two amazing children. In his spare time, he enjoys fishing, camping, and just spending time with family and friends.

Theresa Short

Senior Bookkeeper

Theresa has an extensive background in office administration, bookkeeping, payroll, and tax support. She has held various positions from Bookkeeping Specialist to Office Manager. She has 13+ years working experience with QuickBooks, Peachtree, Sage Mas 90, and Microsoft Suite.

Theresa calls Tennessee home and loves friends, family, everything outdoors, travel, meeting new people and seeing new places. Her next adventure will be going back to school for self-development and the joy of learning.

Cheyenne Toof

Administrative Assistant

Cheyenne is the friendly smile that is always there to greet you at Kingsport CPA. She helps manage appointments and is always willing to lend a hand. Her goal is to continue her education to pursue a degree.

In her free time Cheyenne resides in Rogersville where she loves to spend quality time with her family. She also enjoys taking adventures to new locations to explore what the world has to offer.