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A. Scott Walton
Chief Executive Officer
A. Scott Walton has more than two decades of experience as a founder and executive of health care businesses . Before joining Ameritox as its CEO, Mr. Walton was an Executive Vice President with Laboratory Corporation of America, where he ran the company’s “Esoteric Business Units,” which generated over $1 billion in annual revenue. He was also a member of LabCorp’s five-person Executive Committee.
Before leading the Esoteric Businesses at LabCorp, Mr. Walton had numerous roles with the company including heading up strategic planning, mergers & acquisitions, and serving as the company’s Chief Information Officer.
Prior to LabCorp, Mr. Walton was a Partner at Subsidium Health Advisors, a healthcare consultancy that he co-founded, from 2002 to 2005. Earlier in his career, he also held management consultant positions with KPMG and E&Y and was exclusively focused on the health care marketplace.
Mr. Walton has a BA from Yale University and an MBA from the Harvard Business School.
Chief Operating Officer
Mr. Gardner is the Chief Operating Officer at Ameritox, responsible for the operational leadership and day-to-day management of the organization. While at Ameritox, he has overseen strategic planning, as well as business and infrastructure development during a period in which Ameritox grew from an upstart pioneer to a full-fledged industry leader. During this time, Mr. Gardner managed the company’s growing infrastructure, including the creation of numerous new departments within the company. He also developed laboratory strategy, implementing new technologies and instituting operational efficiencies – all in an effort to expand the company’s capacity and improve service to the organization’s thousands of customers,
Prior to working at Ameritox, Mr. Gardner held several positions in finance in the distribution industry handling mergers, acquisitions and consolidations, building operations and expanding businesses and distribution centers. Mr. Gardner began his career in public accounting with Deloitte & Touche, where he worked with emerging middle market clients.
Chief Medical Officer
Thomas Smith, M.D., joined Ameritox in the fall of 2014 as Chief Medical Officer. As CMO, he will oversee Ameritox’s long-standing pain medication monitoring business as well as its growing behavioral health services.
Dr. Smith has more 25 years of experience in a variety of health care roles, ranging from 12 years in private clinical practice to numerous leadership roles in major health care corporations. Most recently, Dr. Smith held the position of Chief Medical Officer with Mallinckrodt Pharmaceuticals, where he helped the company serve millions of patients around the globe with effective and safe medications, and was instrumental in growing the company’s market capitalization from $2 billion to $8 billion in just 2 years.
Dr. Smith has also held clinical leadership roles with several leaders of the pharmaceutical industry: Abbott Laboratories, Teva Pharmaceuticals and Genzyme among them. He holds an undergraduate degree from Purdue University and a medical degree from the Indiana University School of Medicine.
Senior Vice President & Chief Laboratory Officer
For more than 20 years, Mr. Zimmerman has managed clinical research programs in a variety of settings. He began his career at Massachusetts General Hospital, the flagship Harvard University Hospital, where he served as Administrative Director in the Center for Imaging and Pharmaceutical Research. Mr. Zimmerman was later appointed Senior Vice President and Chief Operating Officer of WorldCare, Inc., a clinical research organization serving Proctor & Gamble, Hoffmann La Roche, Novartis and other leading pharmaceutical companies.
At Perceptive Informatics, Inc., a subsidiary of the biopharmaceutical services provider PAREXEL International, Mr. Zimmerman served as Vice President of the Medical Imaging Division. During his tenure there he oversaw the company’s contract research and consulting services for pharmaceutical, biotechnology and medical device customers in their use of medical imaging as an endpoint in clinical trials – contributing to dozens of successful regulatory submissions.
Most recently Mr. Zimmerman founded North Point Imaging Research, a start-up venture providing technology and services using medical imaging as an endpoint in the clinical development process.
Mr. Zimmerman received his Masters of Education in Administrative Policies Studies, Hospital Administration from the University of Pittsburgh and a Bachelor of Science in Biology/Education from the University of South Carolina.
Senior Vice President, Sales
As Senior Vice President of Sales at Ameritox, Mike Ziegler is responsible for sales strategy and overall management of the sales force.
Mr. Ziegler most recently served as the Vice President of Sales & Marketing at CBLPath, Inc., a leading provider of sub-specialized anatomic pathology and molecular diagnostic laboratory services. While in this role, Mr. Ziegler reduced commercial expenses while expanding sales, improving top and bottom line performance. He led the transition of CBLPath from a diagnostic company to a full-service esoteric laboratory that focused on personalized medicine. Mr. Ziegler has also held leadership positions as a consumer banking officer with AmSouth Bank and a manager in Home Depot’s leadership program.
Mr. Ziegler served as a captain and aviation supply officer in the United States Marine Corps. While in the Marine Corps he lead a team in planning and coordinating logistics support for exercises and deployments for a Marine aviation group. As the supply accounting division officer-in-charge, he lead a team responsible for managing a flight hour program budget and maintaining and reporting financial accounts supporting operations, among other financial responsibilities. Mr. Ziegler was also responsible for planning combined arms exercises, weapons and tactics training, and contingency operations. He executed the ground training program for 600 Marines.
He holds a Bachelor’s Degree in Mathematics from the College of the Holy Cross.
Vice President, Intellectual Property & Program Development
Joel McEndree, one of the founders of Ameritox, brings extensive business start-up and management experience to his role as Vice President, Intellectual Property & Program Development.
Before helping to launch Ameritox in 2001, he was CEO of its predecessor, Universal Toxicology Laboratories. Mr. McEndree had previously started two other companies, Dojuta Properties, founded in 1998, managed various real–estate ventures; Magi, Inc., which he started in 1981, performed contract accounting and operations services for small, independent oil and gas operators. All of these companies, including the two laboratories, have shared a strong commitment to offering valuable, reliable solutions to their client companies and physician practices.
Mr. McEndree holds a BBA with majors in finance and accounting from the University of North Florida.
Chief Compliance & Ethics Officer
Barbara Senters came to Ameritox with an extensive background in establishing and enhancing compliance programs at major health care companies.
Most recently, she was Compliance Director and HIPAA Privacy Officer at Benevis Practice Services, which provides business support services to several leading national health care companies. Ms. Senters has also held other notable positions in compliance, as Chief Compliance Officer with Solstas Lab Partners and in a senior Compliance management role with Quest Diagnostics.
Ms. Senters holds business degrees from Eastern Kentucky University and the University of Kentucky . She is a Certified Compliance and Ethics Professional, and a Six Sigma Greenbelt. She also has a certificate in Non-Profit Board of Directors from Duke University.