Leffel Consulting Group, LLC
Leffel Consulting Group, LLC

Our Team of Experts

The Leffel Consulting Group, LLC is managed by Elizabeth Leffel, PhD, MPH, who has been a leader in the biodefense and radiation fields for over 15 years. She is a recognized expert in the development of animal models with inhalational disease from a variety of threat agents. Dr. Leffel has held numerous national and international positions in both private and government work groups, advisory committees, and forums. Recently Dr. Leffel was appointed to the Governor's Secure Commonwealth Panel for Virginia.


Dr. Leffel offers a unique set of qualifications as she has experience at all stages of drug development. She worked as a bench scientist in a Department of Defense laboratory establishing natural history models for aerosolized threat agents, as well as testing and evaluating medical countermeasures (MCMs) against infectious disease. For PharmAthene, Inc. she directed nonclinical programs to advance vaccines and biologics to treat exposure to biological and chemical agents. As a senior executive at Terapio Corporation, she was responsble for both radiation MCMs and other commercial indications such as radiation-induced oral mucositis, traumatic brain injury and stroke.


She has collaborated as a scientist, nationally and internationally, on research teams and successfully procured funding from the Department of Defense, the National Institutes of Health and the Biomedical Advanced Research and Development Authority. As an executive, she has directed programs for the development of medical countermeasures at stages of both pre- and post-IND filings. Dr. Leffel holds a BS in Biochemistry and Nutrition from Virginia Tech, a Master's of Public Health from The George Washington University and a PhD in Pharmacology and Toxicolgy from the Medical College of Virginia.

Valerie Riddle, MD

As President and Owner of BioPharmAdvisors, LLC, Dr. Riddle provides consultative services to the biotechnology and pharmaceutical industry in the design, conduct and oversight of all phases of clinical trials and is committed to advancing leading edge knowledge in the area of translational research. In addition to a slate of private sector clients, she also serves as a Medical Officer (part-time contractor) for the National Institute of Allergy and Infectious Diseases/DMID Respiratory Diseases Branch. She previously served as Medical Director to PharmAthene, Inc. Dr. Riddle received her MD from the University of South Florida and is board certified in both Internal Medicine and Infectious Diseases.

Strategic planning of product development programs...from the bench to the patient.







How to Find Us:

Conveniently located in the Washington DC-Metro Area

and near Maryland's Biotechnology Corridor


+1 (540) 486-4723

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