Expert Team

Healthcare Leaders

  • Sheila Dawling, Ph.D. (grayscale) Sheila Dawling, Ph.D.

    Sheila Dawling, Ph.D.
    Vice President, Lab Operations

    Dr. Sheila Dawling joined Aegis from Vanderbilt University Medical Center where she was the associate director of clinical chemistry, and director of the toxicology laboratory since 1996. A London native, Dr. Dawling received her B.S. in biochemistry from the University of Surrey, and her Ph.D. in pharmacology from the University of London. She worked as an analyst in London (Guy's Hospital) for almost 20 years. She is the author of more than 80 research publications and 25 book chapters on drug kinetics, metabolism and analytical techniques. Dr. Dawling is a member of the Society of Forensic Toxicologists, the International Association of Forensic Toxicologists, and the American Association of Clinical Chemistry, and is board certified by the American Board of Bioanalysis.

  • Cheryl Hild, Ph.D. (grayscale) Cheryl Hild, Ph.D.

    Cheryl Hild, Ph.D.
    Vice President, Quality

    Dr. Hild is the Vice President of Quality for Aegis and received her Ph.D. in management science and industrial statistics from the University of Tennessee. She serves as an adjunct faculty member for the University of Tennessee’s Center for Executive Education and Department of Statistics, Operations and Management Sciences. She served more than nine years as a senior associate with Six Sigma Associates, where she consulted with major organizations, including H&R Technical, Johnson Controls World Services, Whirlpool, Asurion, PP&G, Tamko, Pfizer Capsugel, Embraco of Brazil, and others.

    Dr. Hild has authored numerous peer-reviewed articles and is co-author of the book, The Power of Statistical Thinking. She is an active public speaker in the areas of Lean and Six Sigma, including Industry Week Best Plants, International Lean Six Sigma, and ASQ.

  • Elaine Jeter, M.D. (grayscale) Elaine Jeter, M.D.

    Elaine Jeter, M.D.
    Medical Director

    Prior to joining Aegis as Medical Director, Dr. Jeter was the Senior Medical Director at Palmetto GBA, a Medicare Administrative Contractor that administers Medicare health insurance for the Centers for Medicare & Medicaid Services (CMS) throughout the U.S. At Palmetto GBA, Dr. Jeter developed and directed the MolDX program, which was created to uniquely identify laboratory tests, primarily sole-source and molecular tests, and to determine the clinical value of a test by way of a technical assessment. The assessments were subsequently developed into Medicare local coverage decision policies. In the field of toxicology, her “Controlled Substance Monitoring and Drugs of Abuse Testing” coverage policy has largely become the model across the country for providers and payers alike.

    Dr. Jeter has practiced surgical pathology and directed clinical laboratories in academia and the private practice. She completed her medical school and residency training at the Medical University of South Carolina (MUSC) in Charleston, SC. She is board certified in Anatomic and Clinical Pathology, with sub-specialty boards in Blood Banking and Transfusion Medicine.

  • Matthew Hardison, Ph.D., FACMG (grayscale) Matthew Hardison, Ph.D., FACMG

    Matthew Hardison, Ph.D., FACMG
    Laboratory Director, BioPharma

    Dr. Hardison is the laboratory director for the BioPharma laboratory. Prior to joining Aegis Sciences Corporation in 2015, he was the founding laboratory director of Assurance Scientific Laboratories in Birmingham, AL.

    Dr. Hardison received his Bachelor of Science from Lipscomb University in Nashville, TN, and his Doctorate of Philosophy in molecular physiology and biophysics from the University of Alabama Birmingham (UAB) in Birmingham, AL. Following a post-doctoral fellowship at UAB, Dr. Hardison completed a fellowship in Clinical Molecular Genetics at Baylor College of Medicine in Houston, TX.

    Dr. Hardison is a member of the American College of Medical Genetics and the American Society for Mass Spectrometry. He has published numerous peer reviewed publications, book chapters, and presented at several scientific meetings in the fields of immunology, toxicology, and genetics.

  • Darcie Wallace-Duckworth, D.A. (grayscale) Darcie Wallace-Duckworth, D.A.

    Darcie Wallace-Duckworth, D.A.
    Manager, Technical Training

    As Technical Training Manager, Dr. Wallace-Duckworth is responsible for team member orientation, training, and continuing education. She is charged with developing and improving each team member’s understanding of forensic analytical toxicology and quantitative chemical analysis. Before joining Aegis, Dr. Wallace-Duckworth was a professor at Goucher College in Baltimore, MD. She earned a doctor of arts degree in chemistry from Middle Tennessee State University and a master’s degree in education from Goucher.

    Dr. Wallace-Duckworth is a member of the American Academy of Forensic Sciences, the American Chemical Society, the American Society for Quality, the American Society for Training and Development, and the American Association for Clinical Chemistry. Her certifications include Six Sigma Black Belt, certified manager of quality and organizational excellence, certified toxicologist through NRCC, and licensed Lab Director Toxicology State of Tennessee.

  • Regan Caldwell (grayscale) Regan Caldwell

    Regan Caldwell
    Director, Aegis University Program

  • Cyndi Clark, PhD (grayscale) Cyndi Clark, PhD

    Cyndi Clark, PhD
    Manager, BioPharma Laboratory

    Dr. Cyndi Clark received her B.S. in Chemistry from Middle Tennessee State University and her Ph.D. in Pharmacology from Vanderbilt University. She completed a post-doctoral fellowship at Vanderbilt University Medical Center and was a Research Assistant Professor in Biomedical Engineering at Vanderbilt University for four years.

    Dr. Clark’s previous work used animal models of cardiovascular disease to identify targets and test new pharmacotherapies aimed at preventing heart failure. She has published a number of peer-reviewed manuscripts and presented at scientific conferences across the world.

Clinical Leaders

  • Philip Poston, PhD, HCLD, DABCC, MT(ASCP) (grayscale) Philip Poston, PhD, HCLD, DABCC, MT(ASCP)

    Philip Poston, PhD, HCLD, DABCC, MT(ASCP)
    Vice President, Scientific Affairs

    Dr. Philip Poston received his B.S. in Medical Technology from Clemson University, M.S. in Clinical Chemistry from Louisiana State University Medical Center, and Ph.D. in Toxicology from North Carolina State University. He is board certified as a High-complexity Clinical Laboratory Director in Chemistry by the American Board of Bioanalysis and a Diplomate of the American Board of Clinical Chemistry in Toxicological Chemistry. He is also certified as a Medical Technologist by the American Society of Clinical Pathologists. Dr. Poston maintains multiple state licenses as a Laboratory Director.

    Prior to Aegis, Dr. Philip Poston was a Clinical Associate Professor in the Department of Pathology, Immunology and Laboratory Medicine at the University of Florida College of Medicine. He was the Director of the University of Florida Racing Laboratory and the Associate Medical Director of the University of Florida Health Pathology Laboratories Clinical Toxicology Laboratory.

  • Lauren Belemjian, Pharm.D. (grayscale) Lauren Belemjian, Pharm.D.

    Lauren Belemjian, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Lauren Belemjian completed her pre-professional curriculum at Lipscomb University and received her Doctor of Pharmacy from Lipscomb University College of Pharmacy. Prior to Aegis, Dr. Belemjian completed an Academy of Managed Care Pharmacy (AMCP)- and American Society of Health System Pharmacists (ASHP)-accredited Post Graduate Year 1 (PGY1) Managed Care Pharmacy Residency at Hospital Corporation of America (HCA) in Nashville, TN. During her time as a pharmacy resident, Dr. Belemjian focused on both evolving as a clinical and managed care pharmacist as well as developing leadership skills within a corporate environment. She also received certifications through completion of advanced cardiac life support courses and the University of Tennessee Health Science Center’s Teaching and Learning Program.

    Currently, Dr. Belemjian holds memberships in the Academy of Managed Care Pharmacy (AMCP), the Tennessee Pharmacists Association (TPA), the American Pharmacist Association (APhA), and the American Society of Health System Pharmacists (ASHP).

  • Savannah Clary, Pharm.D. (grayscale) Savannah Clary, Pharm.D.

    Savannah Clary, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Savannah Clary completed her pre-professional curriculum at the University of Kentucky and received her Doctor of Pharmacy from Lipscomb University College of Pharmacy where she received the Eli Lilly Achievement Award for excellence in primary care and chronic disease state management. She also completed a PGY1 Community Pharmacy Practice residency at Marcrom’s Pharmacy in Manchester, Tennessee. Dr. Clary went on to complete a Certificate of Graduate Studies in Health Care Informatics at Lipscomb University. She has completed the Lipscomb University College of Pharmacy Teaching and Learning Program and obtained certifications in immunization, medication therapy management, and diabetes.

    Before joining Aegis, Dr. Clary worked as a clinical pharmacist specializing in nephrology and the pharmaceutical care of dialysis patients. She is a member of the American Pharmacists Association, the Tennessee Pharmacists Association, the Nashville Area Pharmacists Association and the American College of Clinical Pharmacy. Dr. Clary currently holds pharmacist licenses in Tennessee, Kentucky, Maryland, Texas, and West Virginia.

  • Andrew C Holt, Pharm.D. (grayscale) Andrew C Holt, Pharm.D.

    Andrew C Holt, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Holt completed his pre-professional curriculum at the University of Memphis and received his Doctor of Pharmacy degree from the University of Tennessee Health Science Center. He currently holds licenses in Tennessee, Arkansas, and Mississippi. Before joining Aegis, Dr. Holt worked for the Tennessee Board of Pharmacy as Executive Director and most recently was Director of Tennessee’s Controlled Substance Monitoring Database. He also has experience in both nuclear medicine and community pharmacy, with certifications in immunization and medication therapy management.

    Dr. Holt is an assistant professor for the Department of Clinical Pharmacy at the University of Tennessee College of Pharmacy. He holds memberships in the Tennessee Pharmacists Association, American Chemical Society, and American Pain Society. He is also a member of the Tennessee Department of Health’s Chronic Pain Treatment Guideline Committee.

  • Hina Patel, Pharm.D., MBA (grayscale) Hina Patel, Pharm.D., MBA

    Hina Patel, Pharm.D., MBA
    Clinical Scientist, Healthcare

    Dr. Hina Patel completed her pre-professional curriculum at the Middle Tennessee State University and received Bachelor of Science in Biochemistry. Dr. Patel earned her Doctor of Pharmacy from the University of Tennessee Health Science Center College of Pharmacy, and her Master in Business Administration from the University of Memphis – Fogelman College of Business and Economics as part of dual degree program. Prior to Aegis, Dr. Patel practiced as a pain and palliative care clinical pharmacist in hospice and home and long-term care settings. She has demonstrated a passion and commitment as a pharmacist by combining clinical pharmaceutical knowledge with a professional business education.

    Dr. Patel also has APhA certifications in Pharmacy-Based Immunization Delivery, and Medication Therapy Management Services. Dr. Patel is a member of American College of Clinical Pharmacy (ACCP), the Tennessee Pharmacists Association (TPA), the American Pharmacist Association (APhA), and The Rho Chi Society.

  • Brandi L Puet, Pharm.D. (grayscale) Brandi L Puet, Pharm.D.

    Brandi L Puet, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Puet is an expert in toxicology, medication use, and safety. She has completed residencies in pharmacy practice with the Veterans Affairs Tennessee Valley Healthcare System and medication use safety with the Hospital Corporation of America/University of Tennessee. In 2007, she received the Unit Commendation for Exemplary Performance of Duty from the Department of Health and Human Services.

    Dr. Puet earned her Bachelor of Science in biomedical sciences and her Doctor of Pharmacy from Auburn University in Auburn, AL. She currently holds affiliate faculty positions with the colleges of pharmacy for Belmont University, Lipscomb University, and the University of Tennessee. She has published in toxicology and pharmacy journals and presented at numerous meetings. She is a member of the American Chemical Society, American College of Clinical Pharmacy, and American Society of Medication Safety Officers.

  • Joshua Schrecker, Pharm.D. (grayscale) Joshua Schrecker, Pharm.D.

    Joshua Schrecker, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Schrecker completed his pre-professional curriculum at the University of Tennessee and received his Doctor of Pharmacy from the University of Tennessee College of Pharmacy. Prior to Aegis, Dr. Schrecker completed an American Society of Health System Pharmacists-accredited Post Graduate Year 1 Pharmacy Residency at Hospital Corporation of America. During his time as a pharmacy resident, Dr. Schrecker focused on both evolving as a clinical pharmacist as well as developing leadership skills within a corporate environment. He also received certifications through completion of advanced cardiac life support courses and the University of Tennessee Health Science Center’s Teaching and Learning Program.

    Currently, Dr. Schrecker holds memberships in the Tennessee Pharmacists Association, the American Society of Health System Pharmacists, and is a board member of the Nashville Area Pharmacists Association.

  • Bernard Britton, Pharm.D. (grayscale) Bernard Britton, Pharm.D.

    Bernard Britton, Pharm.D.
    Clinical Scientist, Healthcare

    Dr. Bernard Britton completed his pre-professional curriculum at Tuskegee University, receiving a Bachelor of Science in Chemistry, and the University of Alabama at Birmingham, receiving a Master of Science in Clinical Laboratory Science (concentration in Biotechnology). Dr. Britton earned his Doctor of Pharmacy from the University of Tennessee Health Science Center College of Pharmacy. Prior to Aegis, Dr. Britton completed an Academy of Managed Care Pharmacy (AMCP) - and American Society of Health System Pharmacists (ASHP)-accredited Post Graduate Year 1 (PGY1) Managed Care Pharmacy Residency at Kaiser Permanente of Georgia in Atlanta, GA. During his time as a pharmacy resident, Dr. Britton was able to further develop his skills as a clinical and managed care pharmacist within an integrated health system.

    Currently, Dr. Britton holds memberships in the Academy of Managed Care Pharmacy (AMCP), the Tennessee Pharmacists Association (TPA), the Georgia Pharmacy Association (GPhA), the American Pharmacist Association (APhA), the National Pharmaceutical Association (NPhA) and the American Society of Health System Pharmacists (ASHP). Dr. Britton currently holds pharmacist licenses in Tennessee and Georgia.

R & D Leaders

  • Rebecca Heltsley, Ph.D. (grayscale) Rebecca Heltsley, Ph.D.

    Rebecca Heltsley, Ph.D.
    Vice President, Research & Development

    Dr. Heltsley conducts research in measurement science to enable Aegis to respond to the emerging needs in the forensic drug testing arena. She is responsible for the development, implementation and assessment of new technologies. Prior to joining Aegis Sciences Corporation in 2007, Dr. Heltsley completed a National Research Council postdoctoral fellowship and served as a Research Chemist at the National Institute of Standards and Technology in Charleston, SC.

    Dr. Heltsley earned her bachelor’s degree in chemistry, environmental science, and biology and master’s degree in chemistry from Western Kentucky University in Bowling Green, KY. Following completion of her Master of Science, she received her Ph.D. in environmental toxicology from North Carolina State University in Raleigh, NC. She is a member of the American Chemical Society.

  • David M. Schwope, Ph.D. (grayscale) David M. Schwope, Ph.D.

    David M. Schwope, Ph.D.
    Research Scientist Manager

    Dr. Schwope is the Research Scientist Manager and part of the Research and Development team. Dr. Schwope obtained a Ph.D. in toxicology from the University of Maryland, a Master of Science in forensic science from the University of Illinois, and a Bachelor of Science in chemistry from Miami University.

    Dr. Schwope’s professional positions include service for the National Institute on Drug Abuse (NIH/NIDA/IRP) Chemistry and Drug Metabolism Section and University of Illinois at Chicago, Animal Forensic Toxicology Laboratory. He is a member of the Society of Forensic Toxicologists, the American Academy of Forensic Sciences, and the American Chemical Society and has contributed to more than 20 research articles focusing primarily on human cannabinoid pharmacokinetics and pharmacodynamics.

  • Lucas Marshall, MS (grayscale) Lucas Marshall, MS

    Lucas Marshall, MS
    Manager, Research and Development

Forensics Leaders

  • Melinda Shelby, Ph.D. (grayscale) Melinda Shelby, Ph.D.

    Melinda Shelby, Ph.D.
    Senior Scientist, Sports

    Dr. Shelby is responsible for reviewing and interpreting test results, daily workflow management, team member management, analytical method development, validation, and troubleshooting for Aegis Sports Testing Services. Previously, Dr. Shelby was a Post-Doctoral Fellow and Associate Toxicologist at The Sports Medicine Research & Testing Lab in Salt Lake City; one of only two labs in the U.S. accredited by the World Anti-Doping Agency (WADA). She earned bachelor’s degrees in biology and chemistry from the University of Missouri in Kansas City and a Ph.D. in toxicology from the University of Kansas in Lawrence, KS.

  • Aimee M. Halphen, M.S., NRCC (TC) (grayscale) Aimee M. Halphen, M.S., NRCC (TC)

    Aimee M. Halphen, M.S., NRCC (TC)
    Senior Scientist, Wilma Rudolph Laboratory