Our Team

Joanna Stinnett

Joanna Stinnett Joanna Stinnett

Joanna joined Grass, Coffey & Scharlau CPAs in 1997 as a secretary/receptionist. Little did she know that 18 years later, she'd be relied upon as the pillar of strength during hectic tax seasons. Her attention to detail and personal relationship with clients gives her a unique perspective when working with their personal or business accounts. With Joanna's longevity at GCS, she has seen our clients' children grow up, business flourish & trusts evolve. She truly is a close friend to many of our clients.

Over the years, Joanna has expanded her position to include assisting with client financials, working with QuickBooks and QuickBooks Online, inputting income tax information, preparing and filing payroll tax reports and being an Administrative Assistant to the four partners. Joanna is known as the expert in all things related to the office workflow and the client portal. She has been nicknamed "bloodhound" since she is the official searcher of misplaced files in the office.


Joanna graduated Magna Cum Laude with an Associate's degree in Office Automation Occupations from Phoenix College and also graduated from University of Maine-Augusta with a Bachelor's Degree in Library Science.


Joanna lives in Phoenix with her family. Some of her passions include a continued desire to educate herself in topics of history, the Bible and royal monarchies and to travel Europe. As you pass by her desk, you might catch a glimpse of German shepherds or Russian royalty on her computer screensaver.


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We are dedicated to the success of our clients and we serve them serve them with integrity and responsibility.

We provide personalized services and solutions to fulfill our clients' needs.

We work directly with our clients, and earn their respect by our performance and commitment.

We Deliver Quality.