Dr. Arif-Tiwari is a member of the Radiology and Imaging Sciences Executive Committee and served as the program director of the Abdominal Radiology Fellowship Program for over four years. She is a longtime member and affiliated faculty member at the University of Arizona Comprehensive Cancer Center and also serves as the director of the oncology imaging service line for Banner – University Medicine.

As an appointed clinical expert and contributor to the body MRI course offered by the American College of Radiology, Dr. Arif-Tiwari is involved in the quarterly training of radiologists worldwide. She regularly contributes to appropriate practice guidelines for gastrointestinal imaging and has served as co-author on national imaging guidelines for diseases of the liver and pancreas. Dr. Arif-Tiwari has participated in more than 70 peer-reviewed international publications and serves as an editorial board member for the Austin Journal of Clinical Medicine.