All our dreams can come true if we have the courage to pursue them.



 Walt Disney

Our Story

All our dreams can come true if we have the courage to pursue them.

Founded in 2008 as the original branch of The Evolutions Group, Practice Evolutions empowers healthcare providers with goal-focused expertise and professional resources to achieve personal and professional success.

Our hands-on consulting services create a custom private practice experience. We work alongside you to guide you through the process of developing a practice from the ground up. Developing a detailed project plan and forecasting the resources it will require, we help you shape your goals and outline the objectives required to achieve them.

Our Team


CEO, President

Barry J. Williams serves as our Chief Executive Officer and President and brings to the company more than 15 years of professional experience in the Oral & Maxillofacial and Medical industries. Barry holds a Bachelor’s Degree of Psychology from the University of Oklahoma. He currently speaks nationally about Oral and Maxillofacial Surgery topics such as Practice Transitions, Office Design, and Information Technology.


President of Practice Evolutions

Dave Hibbard, President of Practice Evolutions brings to the company more than 17 years of professional experience in the Healthcare industry. Dave holds a Bachelor’s Degree in Health and Sports Sciences from the University of Oklahoma. Outside of the office Dave enjoys spending time with his wife and 3 children, as well as golf and staying active.


Chief Financial Officer

Gert-Jan Zwemstra is our CFO and contributes his financial and business management skills to the company. Gert-Jan has more than 25 years of experience in Finance, IT, Commercial and Consulting roles within Energy, Chemicals and Consumer Goods industries. He holds a Master of Economics from the University of Brussels. He likes operating at the intersection of Finance, IT, Business Management and Process Optimization. Away from the office, Gert-Jan enjoys college football and sampling new wines.


Director of Practice Development

An avid runner and tenacious problem solver, Angie helps navigate our clients through the strenuous insurance credentialing and contracting process and office admin setup and training. Angie finished her Bachelor of Business Management while providing front office and billing services for one of the top oral surgery practices in Oklahoma. When Angie isn’t overseeing critical admin development for our clients you can find her challenging her husband and kids to a heated board game.