Wendell Wierenga, Ph.D., has been appointed executive vice president, R&D, at Santarus, Inc. Dr. Wierenga will have responsibility for overseeing clinical research, regulatory affairs, quality assurance, medical affairs and pharmacovigilance.   “We are extremely pleased that Wendell is joining the Santarus executive team,” said Gerald T. Proehl, Santarus’ president and chief executive officer. “We intend to call upon his wealth of experience successfully managing pharmaceutical and biologic ...