Dr. Amezcua is an Associate Professor of Neurology, Diversity, Equity and Inclusion Champion, and the Division Chief for Neuroimmunology and Multiple Sclerosis at the University of Southern California (USC), Keck School of Medicine. She received her Bachelor of Science degree from University of California Irvine in Irvine, California, her medical degree from Jefferson Medical College in Philadelphia, Pennsylvania, followed by neurology residency and clinical fellowship in neuroimmunology and multiple sclerosis at USC. She received her Master of Science degree in clinical, biomedical, and translational science from USC, Preventive Medicine, under a Clinical Translational Science Institute NIH KL2 award.

She spearheaded the collaborative research consortium: Alliance for Research in Hispanic MS (ARHMS) and serves as principal investigator. ARHMS is geared at better defining racial and ethnic health disparities, by examining modifiable (social determinants of health and environmental) from non-modifiable genetic factors involved in disease severity and progression specific to the Hispanic and Latino population affected with MS. She serves in numerous national and international committees including as an elected member to the NMSS National Medical Advisory Committee (NMAC), American Academy of Neurology Quality Measures for MS, and NIH NINDS Health Disparities Strategic Steering Committee. She has been recognized with numerous awards including the NMSS Health Care Champion.