Our Mission Statement

At Walsh One Consulting, we are committed to providing our clients the tools to focus on their business growth and maximizing their wealth potential. Walsh One Consulting works to help them understand the dynamics of the financial aspects of their business so they make the best decisions, while guiding them through the process in reaching their goals.

Our Team of Accounting Professionals

Tim Walsh


Bachelor of Arts, Accounting, Rutgers University Certificate of Public Accounting, University of Illinois

Tim is a Gurnee CPA, with over 30 years of experience consulting with small and mid-sized businesses specializing in business diagnostics and strategic planning for business growth. He is a member of the American Institute of Certified Public Accountants and the Illinois CPA Society where he served on the Financial Statement Review Committee.

Tim has a solid track record for successfully assisting his clients in growing their businesses. Tim is very active in community services. He is the Past Chairman of the Lake County Chamber of Commerce and he is a long-time member of the Gurnee Rotary Club.

Erika Medellin

Office Manager

Bachelor of Science, Information and Decision Sciences, University of Illinois at Chicago Minor in Accounting

Erika has worked with Tim Walsh since June 2003 as Office Manager. Prior to that she was the Business Administrator at the Lake County Chamber of Commerce. She blends her knowledge and experience with accounting procedures along with her business talents to supervise a busy Gurnee professional firm. She is proficient in oral and written Spanish.

Give Back

Tim Walsh spends several hours a month volunteering his time to Chamber of Commerce board and local business events, Rotary Club service activities, Boy Scout events, and school and church events.
  • Chamber Board, Chairman (Current), Vice Chairman (Past), Treasurer (Past) and Secretary (Past)
  • Rotary Auction Volunteer, Rotary Leadership Award, Service Award, Numerous Board Positions held
  • Boy Scouts
  • Paul Harris Fellow
  • Exchange Student Host Family
  • English English Spanish Spanish