Samuel Smith, M.D., Medical Director
Dr. Samuel Smith joined Associated Pathologists in 1978 and became the Medical Director of PathGroup Labs at its inception. He has over 20 years of hospital and independent laboratory Medical Director experience. He is a member of numerous medical societies and professional organizations including Tennessee Medical Association, Nashville Academy of Medicine and the American Society for Clinical Pathology. He received his M.D. at University of Louisville in 1973.

Terry Casey, M.D., Medical Director
Dr. Casey has been with Associated Pathologists since 1998 and currently serves as a Managing Member of the group and Medical Director of PathGroup Nashville’s Anatomic Pathology Laboratory. Born in New Orleans, Dr. Casey attended Tulane University School of Medicine where he attained his M.D. in 1981. His postgraduate training occurred in the Department of Pathology at Vanderbilt University Medical Center. Dr. Casey is Board certified in Anatomic and Clinical Pathology with Hematology Subspecialty Certification.

Vladimir Kravtsov, Ph.D, M.D.
Medical Director, Molecular Pathology and Flow Cytometry, Board Certified in Clinical Pathology & Hematopathology 
Dr. Kravtsov earned his M.D. degree at the Kuban State Medical Institute in Russia and went on to receive his Ph.D. degree in Philosophy in Medicine from Leningrad Institute of Experimental Medicine. Dr. Kravtsov completed his Residency training in Pathology and Fellowship in Hematology at Vanderbilt University and his Clinical Fellowship in Hematopathology at the University of Washington in Seattle, WA. He has served as a Senior Scientist at Tel Aviv University, Assistant Professor of Medicine in Hematology and Oncology at Vanderbilt University and Medical Director and Chief Hematopathologist of DiaTech Oncology in Montreal. Dr. Kravtsov authors several patents in the area of Medicine and more than 50 publications in scientific journals. He is a Fellow of the College of American Pathologists and an active member of the American Medical Association, American Society of Hematology and Clinical Cytometry Society.

Patrick Alan Lennon, Ph.D., FACMG
Director, Clinical Cytogenetic
Dr. Lennon received his Ph.D. from the University of Northern Colorado in Biological Education, with emphasis in DNA biotechnologies. He received both the Master and Bachelor of Science degrees in Science Education from East Carolina University and North Carolina State University, respectively. After being awarded the largest federal grant in the history of Southeastern Oklahoma State University as tenured, Associate Professor of Biological Sciences, Dr. Lennon completed a certification program in cytogenetic technology at the University of Texas-M.D. Anderson Cancer Center (UTMDACC) and a postdoctoral fellowship in Clinical Cytogenetics at Baylor College of Medicine. After being involved at Baylor in the development of a targeted microarray application for leukemia, he helped to build the largest National Accrediting Agency for Clinical Laboratory Sciences-accredited diagnostic molecular science program in the nation at UTMDACC. Dr. Lennon has served on the board of directors for the Association of Genetic Technologists, and currently serves on the editorial boards of Clinical Laboratory Science, Annals of Clinical and Laboratory Science, and the Journal of the Association of Genetic Technologists.

James L. Prescott Ph.D.
Molecular Diagnostics Director
Dr. Prescott joined PathGroup Labs in 2008. He has a Ph.D. in Molecular Biology and has nearly 20 years of Molecular Biology experience, including 10 years of Molecular Diagnostics experience. Dr. Prescott is Board certified by the American Board of Bioanalysis (ABB) as a High Complexity Clinical Laboratory Director (HCLD) in Molecular Diagnostics. He received his Ph.D. from the Mayo Graduate School in 1997, and a Bachelor of Science degree in Biochemistry from Cal Poly in San Luis Obispo in 1986. Prior to coming to PathGroup Labs, Dr. Prescott was the Molecular Development Manager for Carilion Consolidated Labs, Molecular Operations Manager for Innovative Pathology Services, and a Senior Scientist for LabCorp, Dianon Systems and UroCor.

Dewayne Belew
Assistant Vice President-Laboratory Operations
Mr. Belew joined PathGroup in October of 2005. Prior to joining PathGroup, Dewayne spent 22 years in Hospital Administration, Healthcare Marketing, Public Relations and Fundraising. He also taught Marketing, Advertising, and Public Relations for nine years as an Adjunct Professor at Lee University in Cleveland, Tennessee. Dewayne earned his B.S. degree at Middle Tennessee State University and his Master of Science Degree at the University of Tennessee in Knoxville. Dwayne manages PathGroup's operations in Chattanooga, Knoxville, Johnson City, TN and Virginia.

Vickie Clinard, MS, MT (ASCP)
Microbiology and DNA Manager
Ms. Clinard joined PathGroup Labs in July of 2003. Vickie has over 20 years of experience in Clinical Microbiology and Molecular Diagnostics while working for the Tennessee Department of Health and major academic and non-academic hospitals. She earned her BA and Masters in Health Care Administration from the University of Tennessee.

Ken DeGraff
Director of Project Administration
Mr. DeGraff joined PathGroup in May of 2000. He has over 30 years of business experience in a variety of industries. He joined PathGroup as the in-house Software Trainer and Supporter and was promoted to I.T. Director in December of 2004. He is responsible for assisting PathGroup’s project owners to document, organize and track projects. Ken has a B.S. in Business Administration and is a CPA (Certified Public Accountant).

Randy Flesher, HT, RT, MBA
Vice President, Operations
Mr. Flesher joined the anatomic technical lab of PathGroup in 2004. Although formally trained as a medical technologist, Randy has been working in the Anatomic Pathology field for over 15 years. During that time he worked in various technical and managerial roles in hospital and reference lab settings. As the day-to-day leader of operational activities, Randy is responsible for the administrative, business, and personnel development of a rapidly evolving, highly diverse, and complex laboratory network.

Jeffrey W. Johnson, BSMT
Assistant Vice President, Operations
Mr. Johnson joined PathGroup in November of 2005. He has 18 years of technical, supervisory, and management experience in both hospital and reference laboratory operation. Jeff is responsible for the operations of the clinical lab which include Chemistry, Immunochemistry, Hematology, Immunohematology, Coagulation, Urinalysis, and Serology. Additionally, he directs PathGroup’s Phlebotomy department and serves on the PathGroup compliance committee.

Debbie Stinnett, MT (AMT)
Assistant Vice President, Operations
Ms. Stinnett joined PathGroup in June of 1997. She has over 25 years of experience in a variety of laboratory environments with technical experience in Flow Cytometry, Molecular, Anatomic and Clinical areas. As Anatomic Operations Manager, Debbie is currently responsible for Histology, Cytology, Flow Cytometry, and Molecular Pathology departments along with many of the pre-analytic processes of our laboratory to include Client Services, Medical Data Integrity (MDI), Transportation, and Accessioning.

Chuck Locke Senior Vice President
Chief Operating Officer
Mr. Locke rejoined PathGroup in April of 2009. Prior to that, he gained a unique blend of experience in anatomic and clinical laboratories, physician practice management and hospital management. Chuck has over 22 years of operational, financial and business development experience with healthcare organizations, working in senior management capacities with PathGroup, HCA Physician Services, MDS Diagnostics, PhyCor and Allied Clinical Laboratories. Prior to his healthcare industry experience, he worked as a Senior Auditor for Deloitte Haskins & Sells. He graduated from the University of Tennessee at Knoxville with a bachelor’s degree in Business Administration/Accounting, and was a two-time NCAA All-American and SEC Champion in track and field. Chuck’s PathGroup responsibilities include the management and leadership of the operational functions of the company. In addition, he is responsible for the business development, planning and successful integration of the new growth opportunities of PathGroup.