Prior to joining Arizona Oncology Associates, Dr. Hallum was director of gynecologic oncology and associate professor, clinical OB/GYN at University of Arizona College of Medicine. Among Dr. Hallum's many honors are Alpha Omega Alpha designation at the Medical College of Georgia, recipient of a Patients' Choice Award at University Medical Center and a Dean's Award for Excellence in Teaching the Clinical Sciences from the University of Arizona College of Medicine. He is a fellow with the American College of Obstetricians and Gynecologists and member of the Society of Gynecologic Oncologists, American Society of Colposcopy and Cervical Pathology, Pima County Medical Society and Felix Rutledge Society of Gynecologic Oncology. His research has been widely published in journals including Gynecologic Oncology, Obstetrics and Gynecology and Gynecologic Techniques. He has also written chapters for two books on gynecologic cancers.