Our Team

Nationally recognized team of physicians

Get to know our expert team


California Fertility Partners is a medical practice dedicated to the evaluation and treatment of reproductive issues.

Richard Marrs, M.D.

Dr. Richard Marrs is board certified in both Obstetrics and Gynecology and Reproductive Endocrinology and Infertility. He attended medical school and completed postgraduate training in Obstetrics and Gynecology at the University of Texas.

Guy Ringler, M.D.

Dr. Ringler graduated with honors from the University of Michigan and the Wayne State University School of Medicine. He completed residency training in OB/GYN at the University of Chicago, and sub-specialty training in Reproductive Endocrinology and Infertility at the University of Pennsylvania.

Kelly Baek, M.D.

Dr. Kelly Baek is a board certified physician in Obstetrics and Gynecology and Reproductive Endocrinology and Infertility who began her education at the Marlborough School in Los Angeles. She then travelled east and graduated with honors from Johns Hopkins University.

Charles March, M.D.

Following medical school and residency in New York, he completed fellowship training at the University of Southern California where he remained as faculty. During his 30-year tenure at USC, he was professor and Chief of the Division of Gynecology.

Bronte Stone, Ph. D.

Doctor Bronte Stone is the technical director of our IVF laboratory and of Reproductive Technology Laboratories, a licensed clinical laboratory and tissue bank serving more than 300 physicians in fertility-related specialties in California and throughout the country.

Eric Urcia

Eric Urcia has over 17 years of experience as a Clinical Embryologist, and began his career at the Weill Cornell’s Center for Reproductive Medicine in New York City where he trained with pioneers in the field of in vitro fertilization and assisted reproductive technology.