Meet our leadership team

Executive leadership

Tim Sotos is Chairman of the Board of Clinical Reference Laboratory. He has been Chairman of the Board since 1995 and has been with CRL for over 25 years. He holds a B.S. in Economics and an M.B.A., both from the University of Pennsylvania, Wharton School of Business.

Robert Thompson is Chief Executive Officer of Clinical Reference Laboratory. Prior to joining CRL, Robert was the CEO of Emerge Diagnostics, a company focusing on its proprietary soft tissue management EFA-STM program, based on its own electrodiagnostic instrument. Prior to that, Robert spent 11 years as the CEO of eScreen as it grew into the largest provider of employment-related medical services in the country, including drug testing and pre-employment physicals. Previous experience includes roles as CEO of Orasure Technologies and CFO and COO of LabOne. Robert earned his MBA from Harvard and a BSE from Wharton School of Business at the University of Pennsylvania.

Dr. Stout serves as Chief Scientific Officer and Laboratory Director for CRL’s General Laboratory. He provides scientific direction and research leadership for all of CRL with particular focus on research for CRL’s Insurer Services business. Dr. Stout, who has been with CRL since 1983, holds more than ten U.S. Patents in science, including one for immunoassay method and apparatus development (U.S. Patent #4,414,324) and one for methods of determining chronic Hepatitis C infection (U.S. Patent #10,051,253). He is the author of numerous research and review articles and is a regular presenter at scientific meetings and conferences. Dr. Stout holds a B.S. in Biochemistry from California State University and a Ph.D. in Biological Chemistry from U.C.L.A. School of Medicine.

Kathleen Ruegsegger is Chief Operating Officer of Clinical Reference Laboratory and oversees all Laboratory Operations, Information Systems/Information Technology, Supply Chain/Facilities and CRL’s European operations.   Prior to joining CRL, Kathleen was COO of Original Juan Specialty Foods, serving as the company’s senior executive leader. She brings over 16 years of manufacturing and supply chain leadership experience in companies affiliated with Thermo Fisher Scientific, the world leader in serving science companies and laboratories.  In 2010 she joined the Microbiology Division of Thermo Fisher as U.S. leader of process manufacturing and supply chain activities, and later assumed the role as global leader of operational excellence for the division.  Previous roles include Vice President and General Manager within Fisher Scientific International as well as commercial and operational leadership roles with Pierce Biotechnology, a leader in protein detection technology. Kathleen earned her BS in Bacteriology from the University of Wisconsin, Madison and began her career as a research scientist.  She later earned an MBA from Keller Graduate School.

Dr. Fehling has been with CRL since 2008 and is a certified High Complexity Laboratory Director by the American Board of Bioanalysis (ABB). Dr. Fehling leads CRL’s Personalized Medicine business unit and serves as the Laboratory Director for CRL’s Molecular / Esoteric Laboratory. More broadly, Dr. Fehling provides scientific leadership across all business units at CRL with her extensive experience in laboratory management, new assay development, and business development.  Prior to CRL she served as the Director of the Genomics Laboratory at Children’s Mercy Hospital, and the Director of Genomics at the Stowers Institute for Medical Research. Dr. Fehling earned her Ph.D. in Molecular Genetics from Texas A&M University. In addition to her HCLD certification, Dr. Fehling is a certified Technical Supervisor in Molecular Diagnostics and a Clinical Consultant by the American Board of Bioanalysis (ABB).

David Porter has been with CRL since 2010 and is responsible for CRL’s Corporate Compliance program, legal operations, and CRL’s corporate quality management and enterprise risk function. He also serves as CRL’s Corporate Secretary. He has over 20 years of experience working with businesses as a lawyer and business consultant. Prior to joining CRL, he spent nine years serving as Assistant General Counsel for a Kansas City healthcare system. Mr. Porter holds a law degree from Notre Dame Law School.

Susan Meyer, who has over 25 years of human resource experience, has been with CRL since 1994 and has served as VP of Human Resources since 2007. She is responsible for the Human Resource operation, which includes leadership development, corporate staffing, employee relations, compensation, benefits, and the company administrative function. Ms. Meyer holds a B.S. in Business Administration from the University of Kansas.

Stephen Nixon is the CFO of Clinical Reference Laboratory and has over 17 years of accounting and finance experience. Prior to CRL, Mr. Nixon was with Tyr Energy, serving as their lead accountant. Prior to Tyr Energy, Mr. Nixon was with KPMG, where he served as an audit Senior Manager, leading SEC registrant and private company audits. Mr. Nixon is a certified public accountant and holds a B.S. and a Masters in Accountancy from the University of Missouri-Columbia.