Mariana Niell-Swiller

Director, Cancer Genetic Counseling
Mariana Niell Swiller, MS, CGC

Mariana Niell-Swiller, MS, CGC, is a board-certified genetic counselor who has been specializing in cancer genetics and hereditary cancer risk assessment for the majority of her career. Mariana earned a Master of Science in Genetic Counseling degree from Brandeis University and received her bachelor’s degree in biology from Cornell University. After honing her molecular genetics skills as a genetics laboratory technician working on neurogenetic disorders, Mariana began her clinical career on the East coast as a genetic counselor in Springfield, MA.  She has since held several clinical and leadership positions from small community hospital settings to larger, specialized centers such as City of Hope Medical Center in Duarte, CA. She now has the honor of providing hereditary cancer risk assessment to UCLA Health patients as well as continuing to build the cancer genetics program in her leadership role.

In addition to clinical and program development responsibilities, Mariana has been involved in translational research, education and mentorship to future genetic counselors. She is a member of the National Society of Genetic Counselors, and she is fluent in Spanish.