Dudnyk Healthcare Group, an agency owned by the Dudnyk Group of Marketing Cos. in Horsham, Pa., has hired Dr. Christopher Tobias as scientific director. Tobias, an experienced medical researcher, speaker and writer, will serve as a medical expert for the agency and its clients. He will help to expand Dudnyk's service offerings into areas such as publication planning and scientific writing to provide clients with a more complete range of marketing options. Previously, Tobias was a senior scientific writer and editor for Trinity Communications, where he worked with a variety of clients from the fields of medicine and science. While at Trinity, he produced clinical peer-reviewed manuscripts, health economics manuscripts and clinical reviews for publication in leading scientific journals. Tobias earned a Ph.D. in neuroscience at Drexel University's College of Medicine in Philadelphia. He also holds a masters in physiology from Georgetown University Medical Center in Washington, D.C., and a bachelors degree in medical technology from Michigan State University in East Lansing, Mich.