Our Executive Team and Board of Directors

DOVE is honored to have a dedicated, diverse and seasoned group of medical and transplant professionals to lead our team and initiatives.

Sharyn Kreitzer, MSW
Director, Chief Executive Officer

Sharyn has over 20 years of experience working in the field of organ diseases and transplantation. She began her career as a dialysis and transplant social worker at Mount Sinai Hospital. She then developed the outreach liaison programs at Mount Sinai where she created education and training practices that led to increases in referrals and access to transplantation. Most recently, Sharyn served as the Administrative Director at the Bronx VA Medical Center where she helped to launch the first VA kidney transplant center in the Northeast.

Sharyn has devoted her career to increasing access to transplants for all patients but particularly those from underserved communities. Sharyn is committed to understanding the barriers to living donor transplantation for Veterans. Through DOVE, Corp. she hopes to develop interventions that will increase kidney transplant rates for this special population. Sharyn will draw upon her experience working in both the VA and private sector as well as her extensive knowledge of outreach, education and healthcare marketing to enable DOVE, Corp. to serve as an effective Veteran’s Donor Champion program.

Dr. Michael S. Kreitzer
Chairman of the Board

Dr. Michael S. Kreitzer, who serves as DOVE’s Chairman of the Board of Directors, is a retired OB/GYN physician who practiced for more than 35 years and taught in two NJ medical schools (New Brunswick and Newark).

He is a USAF (MC) veteran who served during the Vietnam War, and his father, a USN Vet of WWII, was active in the JWV for many years having served as a Post Commander in both Jamaica, NY and Palm Springs, CA.

In addition to serving as our Chairman of the Board, Dr Kreitzer will be assisting DOVE’s outreach program and medical screening events.

Rafael Khaim, DNP

Rafael Khaim, DNP, ANP-BC, FNP-BC, is a Clinical Operations Manager for pediatric and adult Kidney and Pancreas Transplant. He is has been practicing at Mount Sinai Hospital in New York City for the past 18 years. Rafael graduated from Hunter College with both his Bachelor of Nursing and Masters of Science in Adult Nurse Practitioner. He then completed Post Masters in Science as a Family Practitioner at George Washington University, and went on to obtain his Doctoral Degree at the George Washington University School of Health Science and Medicine and holds dual certification (AANP & ANCC) in his profession. His professional interests are healthcare quality, organizational change and education. His area of expertise is in transplant, management, and family practice. He is extremely active in the community for advocating health, prevention and living donation. Rafael has been awarded a NYC leadership commendation from Comptroller of City of NY for distinguished leadership, dedicated service, and commitment to excellence and tremendous contributions to the City of New York. He was also presented with Excellence Team Spotlight Award by Mount Sinai’s Presidential Office Committee; Leadership in Partners of Life Award by Renewal, and Leadership award by Dennis Bligen Kidney Foundation.

Dr. Marie E. Le

Dr. Marie Le is a board-certified, fellowship-trained abdominal transplant surgeon at Montefiore Medical Center in Bronx, NY. Prior to this position, she served as the Surgical Director of the James J. Peters VA Medical Center and helped launch the 7th VA renal transplant program in 2016. While at the VA, Dr. Le was instrumental in implementing system-wide changes allowing Veterans increased access and opportunities in transplantation. As a member of DOVE, she hopes to continue battling the disparities in transplant access and explore innovate living donor outreach strategies for our Veterans.

Dwight Mamanteo, MBA
Director, Treasurer

Dwight Mamanteo is a Managing Member of Bathala Capital L.L.C. since January 2020 and served as a Portfolio Manager of Wynnefield Capital, a private investment management firm from November 2004 until December 2019. He has served on various public and private company boards and has been a member or chairman of the Board, Compensation Committee, Governance Committee and Audit Committee. He received an M.B.A. from the Columbia University Graduate School of Business and a B.Eng., Electrical Engineering from Concordia University.