He has expertise in the areas of Financial Accounting and Corporate Finance and his current research focuses on nonprofit hospital financing, corporate governance in healthcare organizations, and the impact of hospital financial performance on quality of care and charity care provision. He also published academic articles in general finance journals including JBF, JCF and JEF. Nathan has extensive industry experience and has provided consulting services to institutions such as Bank of New York, Bear Stearns, Credit Suisse, and Reuters.