Meet The Team


Roger Brown, CEO/President: Mr. Brown co-founded ACS in 2008. ACS Laboratory is the largest cannabis and CBD/Hemp testing laboratory in the southeastern USA. Utilizing our vast experience in high complexity laboratory tests we developed proprietary testing methods for cannabis, hemp and all derivatives.

Chief Financial Officer

Mr. Winters joined ACS in 2015 and serves as Chief Financial Officer and is responsible for the financial reporting. Before joining ACS, Mr. Winters served as Chief Financial Officer of HCA Physician Services, a division of HCA with over 3,000 providers and over $1 billion in revenue. 


Mrs. Lee joined ACS in 2011 and engages in planning, organizing and overseeing the daily processes and personnel of the laboratory.

Principal Scientist, Analytical Chemistry

Ms. Sun is responsible for method development, optimization, validation, and troubleshooting. Ms. Sun has extensive experience in sample extraction techniques, automation, and throughput.


Dr. Gao joined ACS in 2015 and serves as toxicologist.  Dr. Gao earned her Ph.D. in Environmental Toxicology at Southern University.  Dr. Gao has previous experience as a postdoctoral fellow at the Department of Ophthalmology at West Virginia University.

Billing manager

Originally from NY, before joining the ACS team 2010 Stephanie was an Assistant AP/AR Mgr. for 8yrs. Stephanie attended college at Michigan State University. Favorite quote: Do what’s right. Not what’s easy.

Assistant Billing Manager

Mrs. Mangone joined ACS in 2011 and works out of their Corporate Office located in Boca Raton, FL. She began as a Billing Coordinator and advanced to her current position as Assistant Billing Manager.


Joseph Jeffries, Account Executive for ACS Laboratory assists with business development and customer success with his knowledge of compliance testing within the Cannabis, CBD, and Hemp industry.