Meet Posterity Health's Medical Advisory Board

At Posterity Health, we’ve assembled the nation’s most renowned reproductive urologists, male fertility specialists, researchers, and educators. With decades of medical experience and education, you can rest easy knowing we understand all the ins-and-outs of male fertility issues and treatments. Learn more about our experienced team of medical experts.

Barrett Cowan, MD

Co-Founder and Chief Medical Officer


Barrett Cowan, MD is a reproductive urologist and has specialized in treating male patients with infertility for more than 20 years. He started using telehealth technology when the pandemic began and was pleasantly surprised to see patients were more relaxed and candid about their questions when speaking from the comfort and privacy of their own home, and with their partners by their side. The technology also made it easier for patients to schedule appointments from anywhere in the country.

Seizing the opportunity to offer a better overall patient experience, Dr. Cowan, in partnership with his wife Pamela Pure, launched Posterity Health to make high quality male fertility care accessible to all couples trying to conceive.

Dr. Cowan completed his undergraduate education at Stanford University, graduating with distinction and with honors in biology. He graduated with honors from Stanford University School of Medicine and completed a residency in urology and fellowship in prostate medicine and ultrasound at Stanford University Medical Center.

Kelly Walker, MD

Medical Director


Kelly Walker, MD, is a reproductive urologist and graduated from medical school at Northwestern University’s Feinberg School of Medicine. She completed her urology residency at University of California San Francisco and fellowship in male fertility and microsurgery at the Medical College of Wisconsin. She also holds an MBA from Northwestern’s Kellogg School of Management and focuses her research on quality improvement and telehealth to deliver exceptional male fertility care.

Dr. Walker is focused on creating a differentiated patient experience through the use of innovative technology and male fertility educational content.

Jim Dupree, MD, MHP

Associate Professor of Urology at University of Michigan

Craig Niederberger, MD

Board-Certified Urologist at University of Illinois

Stan Honig, MD

Professor of Clinical Urology at Yale School of Medicine

Peter Schlegel, MD, FACS

Professor of Clinical Urology at Weill Cornell Medicine

James F. Smith, MD MS

Professor of Urology; Obstetrics Gynecology and Reproductive Sciences; and Health Policy Director, Male Reproductive Health

Akanksha Mehta, MD, MS

Associate Professor, Residency Program Director, Department of Urology - Emory University School of Medicine

Tolulope Bakare, M.D.

Regional Medical Director


Tolu Bakare, MD, is a reproductive urologist who graduated from Penn State College of Medicine and completed her urology residency at the University of Arkansas for Medical Sciences. Dr. Bakare did her fellowship at the University of Illinois College of Medicine in Chicago, where she received expert training in andrology, male infertility, microsurgery, and men's health. She is passionate about treating males and helping them fulfill their family goals.

Dr. Bakare is also affiliated with many professional organizations, including the American College of Surgeons, the American Medical Association, American Urological Association, Society for Women in Urology, and the American Society for Reproductive Medicine. She is a board member of Society for the Study of Male Reproduction and the secretary of R. Frank Jones Urology Society.