Paul Diver

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.