Summer Collier is a nurse practitioner with advanced expertise in hepatology and a strong commitment to evidence-based, multidisciplinary care. At UC San Diego Health, she provides comprehensive management for patients with chronic liver disease, including viral hepatitis, autoimmune hepatitis, alcohol-associated liver disease, and metabolic dysfunction–associated steatotic liver disease (MASLD).

Collier is actively engaged in clinical research and has participated in multidisciplinary studies on liver fibrosis, steatosis, and treatment protocols for hepatitis C and alcohol use disorder. Her scholarly work focuses on improving transitions of care for patients with cirrhosis and expanding access to pharmacologic treatments for patients with alcohol use disorder.

A recognized leader in the field, Collier has presented at national conferences including The Liver Meeting (AASLD), Digestive Disease Week (DDW), and GHAPP, speaking on topics such as cirrhosis care, hepatology red flags, and advanced practice provider leadership. She previously served as Chair of the Advanced Practice Council at UC San Diego Health, driving initiatives that elevated APP visibility and impact within the organization.

Before joining UC San Diego Health, she was a family nurse practitioner and HIV specialist with Family Health Centers of San Diego. She also has prior experience as a registered nurse.

Collier completed a Master of Science in Nursing degree from University of San Diego and will complete the Doctor of Nursing Practice degree from University of California, Los Angeles in June 2025. She is certified by the American Nurses Credentialing Center.