Meet The Team


A pioneer in the cannabis testing space, Roger Brown co-founded the first cannabis testing laboratory in Florida ― ACS Laboratory ― in 2008. Today, ACS is the largest cannabis and CBD/hemp third-party testing and compliance laboratory in the Eastern U.S. Utilizing its vast experience in high complexity laboratory tests, ACS 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, 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.

Principal Scientist, laboratory director

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


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


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 in 2010 Stephanie was an Assistant AP/AR Mgr. for 8yrs. Stephanie attended college at Michigan State University.

Assistant Billing Manager

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

Director, Client Loyalty

Joseph Jeffries, Director of Client Loyalty for ACS Laboratory assists with business development and customer success with his knowledge of compliance testing within the cannabis, and hemp Industry


A graduate from High Point University in High Point, North Carolina. Having experience with cannabis in Colorado, Brian brought his expertise to ACS Laboratory where he helps businesses achieve nationwide compliance on their products.

Corporate Controller

Kathy joined ACS in 2015 serving as Corporate Controller working out of the corporate office in Boca Raton, FL. She is responsible for all day-to-day accounting functions for the company.


Masha Belinson manages Corporate Growth, Communications, Content Strategy, Website Content & Development, as well as Client Acquisition & Retention  and soon to be announced Psychedelics!


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