410 E Division St, Sparta, MI 49345

John W. Rohrer, CPA, MBA

John’s responsibilities include tax and accounting services. He has experience as an accounting professor at Spring Arbor University and CFO of a tool and die company in Grand Rapids. In his free time he enjoys reading about history, especially WWII, traveling and gardening.

Eastern Michigan University – Bachelor of Business Administration
Grand Valley State University – Master of Business Administration

Community Involvement
Cedar Springs Rotary Club
Cedar Springs Free Methodist Church


Natalie J. Marocco, EA
Regional Director / Accountant

Natalie has over 25 years of accounting expertise in the private and public industries. At McDonald & Associates she serves clients with tax and payroll processing. She is a Notary Public and a Diamond Level QuickBooks Pro Advisor. For pleasure, she enjoys reading, activities with her pets, and travel.

Andrews University
Bachelor of Arts in Business Administration

Community Involvement
Natalie is a local church officer and is involved with short-term mission outreach.


Jessica Mangus

Jessica joined the firm in 2022. Her responsibilities include greeting clients and answering phone calls, assisting with drop offs/pick-ups, and assembling tax returns. She is a graduate of Grand Rapids Community College. Outside of work, Jessica enjoys toy photography, crafting, as well as spending time with her family and pets.

Tabetha Case
Payroll Processing Manager

Joining McDonald & Associates in 2020, Tabetha processes payroll and files payroll taxes for more than 80 business clients. She has experience in accounts payable, accounts receivable, and collections at the corporate level.

Tabetha graduated with a Bachelor’s Degree from Central Michigan University and is involved in Sparta Community Service.

When not working, she enjoys attending live music performances.

Please contact me about your accounting and financial services.