Mr. Tieken is a Director of Acquisitions and Underwriting for White Oak MOB REIT, with primary responsibilities for sourcing and underwriting new medical office investments. He joined White Oak MOB REIT in August 2020. Prior to joining White Oak, Mr. Tieken served as a Director, Asset Management for City Office REIT (NYSE: CIO) managing their Arizona properties. As Senior Manager, Acquisitions and Asset Management at Everest Healthcare Properties, he was one of the founding members of the firm who built a portfolio of $250mm of medical office properties across the United States with various capital partners, proving sourcing, market research, underwriting, due diligence, financing, closing, and asset management services. Mr. Tieken has also worked in various roles with Healthcare Trust of America (NYSE: HTA), Cole Real Estate Investments (now NYSE: VER), Thomson Reuters, and Ernst & Young. He holds a Master’s degree in Finance from The University of Arizona, Eller College of Management, graduating summa cum laude; he also holds two Bachelor’s degrees, one in Finance and one in Accountancy, from Arizona State University, W.P. Carey School of Business.