Search by name or medical condition. An obstetrician (OB) is a physician specializing in pregnancy, childbirth, and the care that follows. The foundation pursues its goal principally through financial support of (a) the training and education of physicians and health care professionals, and (b) research to improve the safe, effective and compassionate delivery of medical care for the benefit of the community as a whole. 00. Whether you use a Mac or Windows PC, you need to know how to install iTunes, create an account and Apple ID, authorize computers, learn what files iTunes can use, and understand the importance of deauthorizing a computer.