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John Ross

John S. Ross

President, Mayne Pharma USA

Mr. Ross has more than 20 years’ experience in the pharmaceutical industry across marketing and sales, manufacturing and distribution, global sourcing and supply chain. Prior to joining Mayne Pharma, Mr. Ross was a Principal at Tunnell Consulting a leading US biotech and pharmaceutical consulting organization. He has also held a number of leadership roles including Chief Operating Officer of Contract Pharmaceuticals Limited, a provider of outsourced third-party contract development, manufacturing and testing of pharmaceuticals.


Troy Woelfel

Vice President, Operations and General Manager
Mayne Pharma Greenville Operations

Troy Woelfel is Vice President of Operations and General Manager of Mayne Pharma Greenville Operations. His focus is on advancing the performance of the company’s significantly expanded Greenville operations following completion of its $80-million oral solid-dose commercial manufacturing facility in 2018. Woelfel has held management positions at Teligent, Pfizer/Hospira and Novo Nordisk. He is a Six Sigma master black belt and a former Naval Flight Officer with multiple deployments worldwide. A graduate of the United States Naval Academy, where he studied aerospace engineering, Woelfel also holds an MBA from the University of North Carolina at Chapel Hill.


Thomas B. Gold

Thomas B. "Brad" Gold, PhD

Vice President, Pharmaceutical Development

As vice president of pharmaceutical development, Dr. Gold is responsible for overseeing all personnel, facilities and services related to formulation development, potent and cytotoxic products, fast-track development, and analytical methods development and validation. In addition, Dr. Gold is responsible for implementing new technology platforms that include advanced drug delivery methods. He holds a doctorate in pharmaceutics/medicinal chemistry from the University of Kentucky, from which he earned master’s and bachelor’s degrees in chemistry.



Dwight Lewis

Vice President, Quality

As vice president of quality for Mayne Pharma U.S., Mr. Lewis is responsible for managing all quality-related functions to ensure that Mayne Pharma’s U.S. pharmaceutical operations – which range from laboratories to manufacturing lines utilized – continue to comply with regulatory agency and industry standards. The Mayne Pharma U.S. quality unit provides quality support and compliance oversight for the Metrics Contract Services unit.

Mr. Lewis brings more than 30 years of pharmaceutical industry experience to his role. Before joining Mayne Pharma, he was senior director of quality for Teva Pharmaceuticals, where he managed quality assurance and quality control functions for a large solid dose manufacturing site. Prior to that, he served as vice president of corporate quality for IRIX Pharmaceuticals, and as director of quality operations for DSM Pharmaceuticals.

Having joined Mayne Pharma in 2014, Mr. Lewis holds a bachelor’s degree in chemistry from the University of North Carolina – Chapel Hill.