Professional Team

S. Leigh Davitian, JD. Leigh Davitian is the Founder and Chief Executive Officer of the Dumbarton Group and Associates (DGA) and manages it's Washington office.

Over the last 20+ years, Leigh has developed a specialized expertise for many legislative and regulatory matters related to Medicare, Medicaid, and other third-party payment programs. With a broad knowledge-base in these areas, Leigh has a deep working-knowledge of Medicare and Medicaid compliance, reimbursement, coverage, and billing. She routinely counsels clients on issues relating to health care fraud and abuse, errors and waste, as well as the federal False Claims Act, Anti-Kickback Statute, and Physician Self-Referral (Stark) laws.

Additionally, Leigh worked hard to put herself in the fore front of an important and growing health-care area, Elder Care and the Law. As issues of senior abuse and neglect within institutional and home-care settings steadily grow, and become more a focus of governmental intervention, Leigh has seen her value in serving and protecting the senior care population.

Prior to founding DGA, Leigh served simultaneously as both the Senior Legislative Counsel and Director of Government Affairs for the American Society of Consultant Pharmacists (an international professional society representing pharmacists specializing in geriatric medication therapy). Additionally, Leigh has experience working within the U.S. Department of Justice that gives her a unique insight into important governmental enforcement thought processes.

Leigh received her Juris Doctorate from the Capital University School of Law, and her B.S. Degree from Miami University in Oxford, Ohio.

Brad Kile, PhD, is President of DGA.  He has 15 years of broad experience in public policy analysis, research, and government relations with a focus on Medicare and Medicaid.  Brad has extensive lobbying experience with health care issues on Capitol Hill and in more than 25 state capitols.  Prior to DGA, Brad served as Assistant Director of Government Affairs for the American Society of Consultant Pharmacists.  He has also served in health care advocacy and management positions at the public policy firms, National Grassroots & Communications and Ruder-Finn.   Brad received his PhD in health care policy from the Florida State University in 2005 where he wrote a dissertation on state medication policy.  He earned a Bachelor’s degree from James Madison University and a Master’s degree from the American University. 

Kathryn Kuhn, RPh, is a pharmacist and serves as Senior Clinical Associate with DGA.  She has more than 20 years of executive management experience with national and state trade and professional associations representing the public policy and business interests of health care providers.  Prior to joining DGA, Kathryn served as Executive Director of the National Community Pharmacists Association Foundation.  Kathryn has worked in a variety of capacities with senior-level representatives from diverse constituencies—universities, the pharmaceutical industry, U.S. Congress, federal and state government agencies, private businesses, national HIT standards development organizations, health plans, technology vendors, consumer organizations, and The White House.  Kathryn graduated Phi Beta Kappa from the University of Kentucky and earned her pharmacy degree at the University of Kentucky College of Pharmacy. 

Sorina O. Vlaicu, MD, PhD, is a physician and Senior Medical Associate of DGA.  Sorina is skilled in quantitative and qualitative analyses and has worked on issues relating to Medicare, HIPAA, health disparities, transplant issues, organ donation policy, socialized medicine and state policy issues.  She holds a Master’s degree in health policy from George Washington University and a PhD in Public Policy from George Mason University.


DGA's diverse team of experienced senior staff delivers the same broad range of professional services expected from a large firm, but with the personalized attention, customized solutions, and nimbleness that only a small firm can provide.