Our Team


Drew K. Zerick


  • Assurance Services

Industries & Specialties

  • Employee Benefit Plans
  • Manufacturing, Distribution & Commercial Services
  • Not-For-Profit
  • Private Investment Companies
  • Technology

Drew K. Zerick, CPA

Assurance Services Director

Drew provides accounting and auditing services to a variety of clients, with an emphasis on not-for-profit organizations and employee benefit plans. She also has experience with manufacturing, service, and private investment companies. Drew started her career at Sisterson serving private companies and not-for-profits. She also spent several years working as a controller for a regional healthcare company. This gives her a unique perspective when working with her assurance services clients in that she can relate to operational and accounting matters that arise. Drew rejoined Sisterson in 2013.

In addition to her client responsibilities, Drew serves on committees that focus on the strategic initiatives of the Firm. She also serves as an instructor for Sisterson's in-house continuing professional education program, teaching sessions relating to accounting and auditing matters. Drew volunteers as an instructor for the Bayer Center for Nonprofit Management, conducting sessions related to not-for-profit financial reporting.  

Drew lives in Sarver with her husband and three sons.


  • B.S. in Accounting, Slippery Rock University

Professional Certifications

  • Certified Public Accountant (Pennsylvania)
  • Chartered Global Management Accountant

Professional & Community Involvement

  • American Institute of Certified Public Accountants
  • Pennsylvania Institute of Certified Public Accountants