Welcome to our Scottsdale, Arizona CPA firm!

Image of Shayne R. Neuwirth, Joanna M. Yergler, and Ivy

about us

Shayne R. Neuwirth CPA, PLLC provides outstanding tax, accounting, and consulting services to both individual and business clients. Our firm was established in 2011 to create an atmosphere where clients receive individualized attention and exceptional service. After 9 years we remain passionate about the same beliefs as our practice continues to expand. We provide tax-savings opportunities that can be implemented immediately. Business clients choose us as their trusted accountants because we facilitate their move from startup to a thriving business. Our mission is to take care of the necessary accounting so clients can get back to generating profits.


Our firm believes in four underlying principles: professionalism, 

responsiveness, quality, and peace of mind. By combining our expertise, experience, and energy, each client receives personal and professional attention. Those who choose our CPA firm rely on competent advice and we deliver what we promise and go beyond expectations.


Our CPA firm is responsive; phone calls and emails are returned within 24 hours and we always come on time and prepared for all appointments.  Individuals and companies who choose our CPA firm rely on competent advice and fast, accurate personnel. We provide total financial services to individuals, large and small businesses, and other agencies.  To see a listing of our services, please take a moment and look at our services page. Because we get new business from the people who know us best, client referrals have fueled our growth in recent years. 


We feel it is extremely important to continually professionally educate ourselves to improve our technical expertise, financial knowledge, and service to our clients. We operate by a high set of standards to meet the needs of our clients and to exceed their expectations.

Meet The Team

Shayne R. Neuwirth


Joanna grew up in a small town in Illinois and moved to Arizona to escape the cold and attend ASU where she graduated with a Bachelor’s in Marketing. Joanna then pursued a Master’s of Accounting and Financial Management graduating in 2013. She earned her CPA in 2015 while working as a staff accountant for Henry+Horne She has worked for the Shayne R. Neuwirth CPA, PLLC since June of 2018 and strives to provide quality service to clients and continuously learn about the tax field. As the senior tax manager, she specializes in both business and individual returns as well as payroll and LLC setup. Joanna enjoys getting to know our clients and ensuring they receive assistance tailored to their needs. In her spare time, Joanna enjoys golfing, baseball games, baking, Escape Rooms, and movies.  

Joanna M. Yergler

 CPA, MAFM, Director of Tax

Ivy started at SRNCPA in September 2019 and was hired on as the Accounting Manager of the firm.  Ivy received her Bachelor of Science degree in Accounting and in Business Administration from Aurora University.  She relocated to Phoenix from the western suburbs of Chicago with her husband and two sons in 2019.  Her Accounting background started at a property management company in Chicagoland where she had dual roles as the Accounting Specialist and Office Manager.  As the Accounting Manager, she manages our clients’ general ledgers, monitor and analyze accounting data, produce financial statements and enforce proper accounting methods.  Ivy is currently pursuing a Master’s in Professional Accounting emphasis in Taxation at Colorado State University – Global with an estimated date of completion in March 2021, and after completion, Ivy will be sitting for the CPA exam.  In her spare time, Ivy enjoys reading books of all genres, crafts, and exploring Arizona.   

Ivy Starck

Accounting Manager

Trisha moved to Arizona in 2018 from Illinois. She has an Associate of Science Degree from Rockford Career College of Illinois, in 2017. In her free time, Trisha enjoys bonfires, reading, puzzles, and exploring Arizona with her husband, Mike. She loves dogs and hopes to adopt one someday. Being from the Midwest, a good rainstorm makes her happy. Trisha has been in the Customer Service Industry for over 12 years and loves meeting new people.  She looks forward to meeting you soon!" 

Trisha Torrance

Administrative Assistant

Sarah is a native to Arizona, she has known Shayne for over 10 years and has 19 years of bookkeeping experience.  Sarah is married with 2 daughters aged 6 and 7, the eldest was diagnosed with Angelman Syndrome at 10 months of age. Due to her daughters’ significant needs, Sarah works part-time so that she can be with her girls after school.  Sarah plans to attend ASU in the fall to finish her business degree and pursue her CPA. When she is not busy being a mom, student and bookkeeper she enjoys volunteering for The Angelman Syndrome Foundation; meeting recently diagnosed families, organizing the yearly fundraising walk, and spreading awareness for this rare disease.  

Sarah Ferrell

Staff Accountant


Accounting Intern

Henry is currently pursuing a Bachelor's Degree in Accountancy at the Arizona State University & interning with Shayne R. Neuwirth CPA, PLLC. My interests include fine arts, outdoor activities, & martial arts. I provide assistance in bookkeeping, as well as individual tax preparation. It has been a  rewarding experience interacting with a very dynamic team & learning about the operations of this Accounting Firm.