Ruth Ronn, MD

Reproductive Endocrinology and Infertility Specialist; Deputy Medical Director

Fertility preservation; LGBTQ2S+ inclusive care; reproductive endocrinology and infertility; fertility research; clinical guideline development

At Twig Fertility – Downtown — Toronto, Ontario M5X 2A2

About Ruth Ronn, MD

Ruth Ronn, MD, MPH, FRCSC (GREI), is a Royal College-certified obstetrician-gynecologist and reproductive endocrinology and infertility specialist at Twig Fertility. Her clinical and academic interests include fertility preservation, LGBTQ2S+ inclusive care, fertility research and reproductive-health guideline development.

Dr. Ronn earned her medical degree from McGill University, completed an Obstetrics and Gynecology residency at Queen’s University, and completed a Gynecologic Reproductive Endocrinology and Infertility fellowship at Mount Sinai Hospital. She also earned a Master of Public Health from Johns Hopkins University and received clinical reproductive endocrinology experience at Shaare Zedek Medical Center in Jerusalem.

Education and training

Medical degree, McGill University; Obstetrics and Gynecology residency, Queen’s University; Gynecologic Reproductive Endocrinology and Infertility fellowship, Mount Sinai Hospital; Master of Public Health, Johns Hopkins University; clinical reproductive endocrinology experience, Shaare Zedek Medical Center in Jerusalem

Awards and recognitions

University of Toronto Post MD Education William S. Fenwick Research Fellowship Award (2018); Post City Magazine Toronto’s Top Doctors (2025)

Professional affiliations

Fellow of the Royal College of Physicians and Surgeons of Canada in Obstetrics and Gynecology and Gynecologic Reproductive Endocrinology and Infertility, FRCSC (GREI) Twig Fertility; Deputy Medical Director, Twig Fertility; Mount Sinai Hospital and University of Toronto; contributor to Canadian fertility preservation and inclusive-care guidelines