Randall A. Loy, MD

Reproductive Endocrinology & Infertility

  • Obstetrics & Gynecology
  • Reproductive Endocrinology
  • Infertility

Randall A. Loy, MD


Randall A. Loy, MD founded Prolog Health in 2018 after several years of studying clinical nutrition and specifically reproductive nutrition and wellness. At that time the desire of the Prolog Health team was, and still is, to provide evidence-based supplements and vitamins of highest quality, supplements that physicians could confidently recommend to their patients.

Dr. Loy is the Medical Director and Managing Partner at the Center for Reproductive Medicine in Winter Park, and Celebration, Florida. Board-certified in obstetrics and gynecology as well as reproductive endocrinology and infertility, he is a highly respected fertility doctor serving the Central Florida area.  He is also the Director of Surgery at Orlando Avenue Surgery Center and Associate Professor of Obstetrics, Gynecology and Reproductive Endocrinology at the University of Central Florida College of Medicine. Dr. Loy received his Bachelor of Arts in English from the University of California, Los Angeles (UCLA) before earning a medical degree from the Medical College of Georgia. While in medical school, he was inducted into Alpha Omega Alpha, the national medical honor society. After completing his internship and residency at the Medical College of Georgia, Dr. Loy pursued a fellowship in reproductive endocrinology and infertility at Harvard Medical School and Yale University School of Medicine. 

Upon completing basic science and clinical research at Yale, Dr. Loy joined the Center for Reproductive Medicine in 1989.  He is currently affiliated with Advent Healthcare System and Orlando Health. Dr. Loy has written more than thirty medical journal articles, textbook chapters, and scientific abstracts in Gynecology and Reproductive Medicine. In addition, he serves as an ad hoc reviewer for Fertility and Sterility and other reproductive medicine journals. Dr. Loy is active in state and national medical societies, including the Florida Society of Reproductive Endocrinology and Infertility, the Society of Reproductive Surgeons, the Society of Reproductive Endocrinology and Infertility, the Society of Assisted Reproductive Technologies, and the American Society for Reproductive Medicine.  His chief medical interests include in vitro fertilization (IVF), nutrition and wellness, endometriosis, adenomyosis, as well as recurrent pregnancy loss. 

With expertise in product development, Dr. Loy has developed and patented a number of innovative surgical products. He has been featured on the Best Doctors in America® list, America’s Top Doctors, and other national directories. Dr. Loy is consistently recognized as a top doctor by US News & World Report Best Doctors in America and Orlando Magazine Best Doctors due to his outstanding achievements in the field of fertility.


While pursuing his medical interests, including advances in endoscopic surgery, Dr. Loy has developed and patented a number of innovative surgical products.




Photo ofRandall A. Loy, MD
Randall A. Loy, MD
Job Title
MD, Reproductive Endocrinology & Infertility
1500 S Orlando Ave,
Winter Park, FL, 32789