Alan Nielsen is chief financial officer for Walgreen Co. based in Deerfield, Illinois.. Nielsen has been with Walgreens since 1987. Prior to being promoted to his current role, Nielsen was group vice president of International Finance. Before that, he served as director of results and director of decision support systems. Previously, he held. several finance and accounting roles in the company.. Nielsen received a bachelor of science degree in accounting from Eastern Illinois University in 1987 and earned a CPA designation in 1990.
