Arianna Cassidy

Arianna Cassidy, MD, is an Assistant Professor at the University of California San Francisco (UCSF) School of Medicine within the Department of Obstetrics, Gynecology and Reproductive Sciences. Her clinical and research interests focus on quality improvement in obstetric care, placenta accreta spectrum disorder, maternal vaccination in pregnancy, and management of complex maternal health conditions.

• 2023: Fellowship in Maternal-Fetal Medicine, UCSF
• 2020: Residency in Obstetrics, Gynecology and Reproductive Sciences, UCSF
• 2016: Medical Doctorate from UCSF School of Medicine

Her research explores immunological responses during pregnancy and lactation through 15+ publications on PubMed. Key studies examine antibody transfer mechanisms, placenta accreta management protocols, and vaccine safety in perinatal contexts. Her work has contributed to understanding maternal-fetal immune dynamics through SARS-CoV-2 studies and placental pathology grading systems.

Dr. Cassidy has received recognition including:

• 2018 - Alpha Omega Alpha Honor Medical Society (UCSF Chapter)
• 2013 - Pathways Explore Summer Fellowship (UCSF School of Medicine)
• 2012-2016 - University of California Regents Scholarship