Paul Diver, PhD, is a director in BRG’s Washington, DC, office. He has applied statistical and econometric techniques in solving complex problems in matters heard before federal and state courts, administrative law judges, regulatory commissions, and in arbitrations.

Dr. Diver has been engaged and submitted expert reports as a statistical expert, and he has been deposed in matters heard at the federal court level and for arbitration. Dr. Diver has provided extensive consulting services to healthcare clients and their counsel. Notably, he has developed complex sampling designs and drawn samples for clients, as well as evaluated the statistical validity of samples and their associated extrapolations developed by parties opposed to clients. These sampling analyses have been used for purposes including estimating fraud exposure, rates of diagnosis upcoding, and repayment amounts. His sampling analyses also have been used to assess compliance risks in a variety of settings. Dr. Diver has provided consulting services concerning the evaluation of Centers for Medicare & Medicaid Services (CMS) RADV audit sampling and extrapolation methodologies, the evaluation of potential bias in the CMS-Hierarchical Condition Category (CMS-HCC) risk adjustment model and the application of the associated Fee for Service Adjuster, and guidance for internal quality-control practices and outlier detection.

Further, Dr. Diver has provided statistical and economic analysis pertaining to horizontal and vertical competition, intellectual property, and damages matters across a wide range of other industries, including automotive, live entertainment, luxury goods, telecommunications, and waste collection and disposal. He also has provided strategic and evaluative advisory services to Division I collegiate athletic programs. Dr. Diver routinely applies a variety of statistical and econometric techniques in addressing client concerns, including sampling analysis, regression analysis, cluster and classification analysis, synthetic control method analysis, difference in differences analysis, and nonparametric analytical methods. He also has experience working with Big Data and parallel processing.

Employment History

Berkeley Research Group Senior managing consultant, 2017 – 2019 Independent consultant, 2011 – 2017 LECG Independent consultant, 2009 – 2011 Senior associate, 2009 Associate, 2007 – 2009 US Census Bureau Mathematical Statistician 2006 – 2007

Professional Affiliations

American Statistical Association American Bar Association

Areas of Expertise


University of Virginia PhD, Statistics, 2017 MA, Economics, 2010 Georgetown University MS, Mathematics and Statistics, 2007 BS, Mathematics, 2006