(712) 252-5337 | info@williamscpas.com

Theresa Vandenberg

Theresa Vandenberg - Human Resources Director


Theresa is the Director of Human Resources located in the Sioux City Iowa office.  She joined the firm in March 2017 with many years of human resources experience from various industries. 


Briar Cliff University (2003) Bachelor’s degree in Business Administration


  • Employee Relations
  • Policies and Procedures
  • Compensation
  • Benefits
  • Recruiting

Community Involvement

  • Past Committee member of Saturday in the Park
  • St. Michael’s School Board - Past Board President
  • St. Bonafice Parish Council
  • Women’s Power Lunch - Committee Member

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 Our Specialties


With extensive experience providing full-service tax and accounting to the agriculture and farming industry, we are intimately familiar with cash flow management, depreciation and tax benefits for farmers, and the USDA farm program and FSA requirements. We can also answer...

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Nursing Homes

We understand the difficult balance of managing your business and delivering high-quality patient care while also managing complex accounting tasks. Relieve yourself of time-consuming back-office accounting work by outsourcing it to our team of experts....

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Latest from Our Blog

Our new website!

Williams & Company P.C. is excited to announce the recent launch of our firm’s new website. We’ve been working very hard to enhance our website and give our firm a fresh look. We’ve also continued to research and identify the latest and greatest technologies to improve the services we provide and ensure we continue to meet your needs.

Take a moment to look...

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