Dr. Denis Vaughan is a Reproductive Endocrinologist and the Director of Clinical Research at Boston IVF, where he leads groundbreaking studies to improve outcomes in fertility treatment. In addition, he is the Co-Director of the Oncofertility program at Boston IVF and an Assistant Professor at Harvard Medical School.

He sees a wide spectrum of fertility patients and has a particular interest in the treatment of patients with Polycystic Ovarian Syndrome (PCOS), those with complex fertility issues as well as fertility preservation (both elective egg freezing and cancer related fertility preservation). In addition, Dr. Vaughan’s primary research focus is on sperm quality and male factor infertility.

Denis was born and raised in Cork, Ireland. He was awarded a full academic scholarship to study medicine at The Royal College of Surgeons in Dublin, Ireland where he graduated with high honors. Whilst at University, Denis was a competitive rugby player. Denis then completed an academic intern year at Beaumont Hospital, Dublin followed by three years of OBGYN training at The Coombe Women and Infants Hospital and The Rotunda Hospital Dublin, the oldest maternity hospital in the world. During this time, Denis led several large research studies, presenting his work internationally and publishing in high impact journals such as the British Journal of Obstetrics and Gynecology.

Denis then moved to Boston to further his training in OBGYN and completed a residency program at Tufts Medical Center. During this time, he was the recipient of multiple academic and research awards including the George W. Mitchell, Jr. Society Excellence on CREOG Examination Award and the George W. Mitchell Jr. Research Award. In addition, he was awarded several grants for his research work including the Turksoy-Marcus Research Grant at Tufts Medical Center, a grant from the New England Fertility Society and Irvine Scientific.

Dr. Vaughan completed his subspecialty fellowship in Reproductive Endocrinology & Infertility here at Boston IVF and Beth Israel Deaconess Medical Center/Harvard Medical School where he continued his prolific research career, winning multiple grants and awards for his work. Denis’ current research interests include the study of twinning in assisted reproduction, selection methods of sperm and the genetics underlying male infertility, work he conducts at Harvard University.

Dr. Vaughan is double board-certified in Obstetrics and Gynecology and Reproductive Endocrinology and is on faculty as an Assistant Professor at Harvard Medical School where he teaches the next generation of aspiring fertility physicians. He has been invited to speak nationally and internationally and has authored and contributed to more than 100 peer reviewed manuscripts, book chapters and abstracts. Dr. Vaughan strongly believes in a personalized, evidenced-based approach to fertility treatment.