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About BioSTAT Consultants, Inc.

Experience Expertise Excellence

Founded in 1994, BioSTAT Consultants, Inc. is a contract statistics organization devoted to providing customized statistical services for toxicology.  Our experienced team of skilled professionals provides expertise in the unique issues associated with the toxicological sciences.  As a strategic outsourcing alternative, BioSTAT's comprehensive services are tailored to meet the specific needs or individual clients.


The BioSTAT team is trained in Good Laboratory Practices (GLPs) and our services are GLP compliant.

News and Events

59th Annual Society of Toxicology Meeting and Tox Expo Anaheim, CA

March 15-19, 2020


Stop and see us at Booth #744


key personnel

Les Freshwater, MS

Les has served as President and CEO of BioSTAT Consultants, Inc. since founding the Company in 1994. 

Les has more than 30 years experience in the pharmaceutical industry as a statistician in toxicology and human clinical trials. He has undergraduate degrees in mathematics and economics from Wittenberg University and a graduate degree is in statistics from Virginia Tech. In addition to authoring and co-authoring numerous articles pertaining to the use of statistics in toxicology, Les has served on the “Neurodevelopmental Endpoints Expert Panel” organized by ILSI. And is an active member of the American Statistical Association and the Society of Toxicology.

Roger Collins, MS, MBA

Roger joined BioSTAT as a Statistician in 2001 to provide statistical and programming support for preclinical studies. 

Roger has over 20 years of experience providing statistical work in the pharmaceutical industry. He received undergraduate degree in biology at the University of Nebraska, graduate degrees in biostatistics at the University of Nebraska and business at Baker University. Roger started his statistical career at Pharmaceutical Research Associates as a Statistician in 1998. During his tenure there he was responsible for the analysis of phase 1-3 clinical studies and several post-marketing studies. He was involved in sales presentations of statistical and programming services to potential clients and in the development of system development life cycle documentation for new software programs. During his final year at PRA he helped establish a PK analysis department which was responsible for the analysis of all Phase 1 clinical studies. He is a member of Drug Information Association (DIA) and an avid Husker fan.

Tom Vidmar, PhD

Tom joined BioSTAT as a Statistical Consultant in 2008. 

Tom has been a statistician for over 35 in drug discovery and development for the pharmaceutical industry. His experience spans professional and senior managerial responsibilities in statistics, specializing in the following nonclinical areas: Pharmaceutical Sciences, Pharmacology, Toxicology, High Throughput Screening, Drug Metabolism, and Genomics. Tom received an undergraduate degree in mathematics from Western Michigan University and graduate degrees in Biostatistics and Mathematics with a Concentration in Statistics from the same institution.  He has authored or coauthored over sixty publications, a book, and several book chapters.

Angela McKenzie, BS, MBA

Angela has served BioSTAT as a Quality Assurance Specialist and Project Coordinator since November 2006.  

Angela's professional experience includes early development drug discovery research, as well as pre-clinical work as a study coordinator in developmental and reproductive toxicology. She received her undergraduate degree in biology from the University of Michigan, and a business degree from Cornerstone University.  Angela’s responsibilities are centered around GLP compliance,  scheduling, client communication, as well as business development. She is a member of the Society of Quality Assurance, as well as the Midwest Chapter of the Society of Quality Assurance.

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