Executive Team
Neal M. Farber, Ph.D.

Chief Executive Officer

Elkan Gamzu, Ph.D.

Chairman of the Board, Acting Head of Clinical Trials

David Gwynne,Ph.D.

Vice President, Business Development

Board of Directors
Elkan Gamzu, Ph.D.

Chairman of the Board, Acting Head of Clinical Trials

Neal M. Farber, Ph.D.

Chief Executive Officer

Daniel Katzman, M.Sc.


Mark Leuchtenberger


Josh Hamermesh



Ross Zafonte, D.O.

Dr. Zafonte is the Vice President of Medical Affairs and Chair of the Dept. of PMR at Harvard Medical School Before, Dr. Zafonte served as Professor and Chair of the Department of Physical Medicine and Rehabilitation at the University of Pittsburgh School of Medicine. In addition to his leadership roles at the University of Pittsburgh, Dr. Zafonte maintained a clinical practice in which he cared for patients with a wide variety of disabilities, including traumatic brain injuries, spinal cord injuries, multiple sclerosis, compressive neuropathies, spasticity, and post concussive musculoskeletal conditions. Dr. Zafonte is a pioneer in proposing the use of dopaminergic stimulants for neurological low-level functioning patients. Dr. Zafonte is a co-author of “Brain Injury Medicine”, the authoritative texbook for this field of medicine.

Douglas Katz, M.D.

Dr. Katz is Medical Director of the Brain Injury Programs at Braintree Rehabilitation Hospital and Professor of Neurology at Boston University School of Medicine. Dr. Katz is a co-author of “Brain Injury Medicine”, the authoritative texbook for this field of medicine.

Pamela Hay, J.D.

Pamela Hay is a business development and operations consultant for early stage biotechnology companies. She was Chief Commercial Officer at Domantis Ltd from 2001 until its acquisition by GSK in 2007, where she oversaw commercial development, including completion of major alliances with Abbott and BMS and additional deal negotiations that concluded the company purchase. Previously, she was SVP, Corporate Development at Dyax Corp where she was responsible for the negotiation of more than 60 licenses and collaborations as well as the legal and IP functions. She has also held senior legal positions at T Cell Sciences and Biogen. Pamela has a JD from the University of Wisconsin and a BA in Biology from Cornell University.

Daniel Tarsy, M.D.

Dr. Tarsy serves as the Vice Chairman, Department of Neurology, Beth Israel Deaconess Medical Center and is an Associate Professor of Neurology at Harvard Medical School. He has extensive experience in phase II and III clinical trials in Parkinson’s disease and related movement disorders.

Men's Sexual Health Advisors

Culley C. Carson, M.D.

Dr. Culley C. Carson, Rhodes Distinguished Professor and Chief of Urology, University of North Carolina, School of Medicine at Chapel Hill. Dr. Carson’s specialties include male sexual dysfunction. He has published more than 200 peer review publications and edited eight textbooks. He is Past President of the Sexual Medicine Society and of the Southeast Section of the American Urologic Association.

Michael A. Werner, M.D.

Michael A. Werner is a board-certified urologist who received his specialized fellowship training in male infertility and surgery and male sexual dysfunction at Boston University Medical Center. He lectures and writes extensively on these topics in medical journals and books. Dr. Werner completed his Urology residency at Mount Sinai Medical Center and received his medical school training at the University of California at San Francisco. He has a B.A. in Biology from Harvard College. Dr. Werner is the Founder and Director of a leading New York treatment facility for male infertility and sexual dysfunction.

Michael P. O’Leary, M.D.

Dr. Michael P. O’Leary, Professor of Surgery, Harvard Medical School and in the Division of Urology at Brigham & Women’s and Massachusetts General Hospitals, Boston. Dr. O’Leary is a pioneer in the field of male sexual disorders and has treated thousands of patients with various conditions, including erectile dysfunction, low sex drive and premature ejaculation.

Ravi Kacker, M.D.

Dr. Ravi Kacker is a Urologist and Clinical Instructor at Harvard Medical School and Andrology and Infertility expert at Men’s Health Boston. Dr. Kacker is a urologic surgeon, clinical study investigator and an active scientific researcher in the areas of testosterone and cardiometabolic health, pelvic and testicular pain, and chronic prostatitis. Dr. Kacker studied biomaterials and drug delivery prior to his career in medicine. He has published over 25 publications which have influenced clinical practice and FDA opinion.

Ridwan Shabsigh, M.D.

Dr. Ridwan Shabsigh, Director, Division of Urology, Maimonides Medical Center and Professor of Clinical Urology, Columbia University, New York. Dr. Shabsigh’s research focuses on the treatment of sexual dysfunctions. He has participated in numerous clinical trials on investigational drugs for the treatment of erectile dysfunction, premature ejaculation and hypogonadism, and he has served as a principal investigator for efficacy and safety trials on a variety of new drugs and medical devices in patients with sexual dysfunctions.

Stanley E. Althof, M.D.

Dr. Stanley E. Althof, Executive Director, Center for Marital and Sexual Health of South Florida and Voluntary Professor in the Department of Psychiatry at University of Miami Miller School of Medicine. Dr. Althof is a clinician and scientist whose research focuses on the psychosocial aspects of sexual dysfunction and their impact. He has been involved in the development and validation of clinical outcome measures, research design methodologies, and clinical trials on a variety of new treatments for male and female sexual problems.