Board of Directors

BioRestorative Therapies' combined Management Team, Board of Directors and Scientific Advisory Board members have extensive experience in the healthcare industry. Together we have expert experience in the stem cell science, medical-related services, life science services marketing, public company business management and financing, IP development and licensing, business acquisitions, and strategic partnering.

Board of Directors

Mark R. Weinreb, M.S. - Chairman, Chief Executive Officer, President


Mark Weinreb has served as our Chief Executive Officer since October 2010, as our President since February 2012, and as our Chairman of the Board since April 2011.

From February 2003 to January 2006 he served as the Chief Executive Officer and Chairman of the Board of Directors of Phase III Medical, Inc. where he orchestrated the acquisition of NS California, an adult stem cell collection company that became NeoStem, Inc. (NASDAQ: NBS), a public international biopharmaceutical company engaged in, among other things, adult stem cell-related science.  From June 2006 through October 2009, Mr. Weinreb served as President and Director of NeoStem, Inc.

In 1976, Mr. Weinreb joined Bio Health Laboratories, Inc., a state-of-the-art medical diagnostic laboratory providing clinical testing services for physicians, hospitals, and other medical laboratories. He became the laboratory administrator in 1978 and then an owner and the laboratory’s Chief Operating Officer in 1982. In such capacity, he oversaw all technical and business facets, including finance and laboratory science technology.

In 1992, Mr. Weinreb founded Big City Bagels, Inc., a national chain of franchised upscale bagel bakeries and became Chairman and Chief Executive Officer of such entity. Big City Bagels went public in 1995, and in 1999 Mr. Weinreb redirected the company and completed a merger with an Internet service provider.

From 2000 to 2002, Mr. Weinreb served as Chief Executive Officer of Jestertek, Inc., a software development company pioneering gesture recognition and control using advanced interactive proprietary video technology. Mr. Weinreb received a Bachelor of Arts degree in 1975 from Northwestern University and a Master of Science degree in 1982 in Medical Biology from C.W. Post, Long Island University.


A. Jeffrey Radov, MBA - Director


A. Jeffrey Radov became a member of our Board in April 2011.

Mr. Radov is an entrepreneur and businessman with 35 years of experience in media, communications and financial endeavors. Since 2002, he has served as the Managing Partner of Walworth Group, which provides consulting and advisory services to a variety of businesses, including hedge funds, media, entertainment and Internet companies, financial services firms and early stage ventures. Mr. Radov is also an advisor to GeekVentures, LLC, an incubator for technology startups in Israel.

From 2008 to 2010, Mr. Radov was a Principal and Chief Operating Officer at Aldebaran Investments, LLC, a registered investment advisor. From 2005 to 2008, Mr. Radov was Chief Operating Officer at EagleRock Capital Management, a group of hedge funds. Prior to joining EagleRock, Mr. Radov was a founding investor in and Board member of Edusoft, Inc., an educational software company.

From 2001 to 2002, Mr. Radov was a Founder-in-Residence at SAS Investors, an early-stage venture fund. From 1999 to 2001, Mr. Radov was CEO and Co-Founder of VocaLoca, Inc., an innovator in consumer-generated audio content on the Internet. Mr. Radov was a founding executive of About.Com, Inc., an online information source, and was its EVP of Business Development and Chief Financial Officer from its inception.

In 1996, prior to founding About.Com, Mr. Radov was a Director at Prodigy Systems Company, a joint venture of IBM and Sears. Mr. Radov was also a principal in the management of a series of public limited partnerships that invested in the production and distribution of more than 130 major motion pictures.

From 1982 to 1984, Mr. Radov was the Director of Finance at Rainbow Programming Enterprises, a joint venture among Cablevision Systems Corporation, Cox Broadcasting and Daniels & Associates.

From 1977 to 1981, Mr. Radov was Director of Marketing at Winklevoss & Associates.

Mr. Radov earned a Master of Business Administration degree from The Wharton School of the University of Pennsylvania and holds a Bachelor of Arts degree from Cornell University. 

Paul Jude Tonna, M.A. - Director

The Honorable Paul Jude Tonna serves as Molloy College’s Executive Director for The Energeia Partnership, a leadership academy dedicated to identifying and addressing the serious, complex and multi-dimensional issues challenging the Long Island, New York region. He is Managing Partner of Praxis Public Relations, Inc. a business consulting and government relations company.

Mr. Tonna served from 1994 to 2005 as a Suffolk County Legislator and for three years, 2000-2002, his fellow legislators chose him to lead the Suffolk County Legislature as its Presiding Officer. During Legislator Tonna’s 12 years of elected office, he had been a strong advocate for the poor, homeless and marginalized on Long Island, affordable housing, labor organizations and the environment. He sponsored, co-sponsored, and passed numerous laws and/or initiatives including: ground breaking non-smoking legislation; innovative programs focused on eliminating child poverty and homelessness; legislation designed to elevate the standard of living for all Suffolk County residents and innovative Greenways Funds to protect open space, farmlands and parklands.

Paul Tonna is a strong advocate of immigrants working and living on Long Island. The 2003 award- winning film documentary Farmingville chronicled some of those efforts. He has appeared on numerous radio and TV shows including: Lou Dobbs, CNN; The Oxygen Network; LI Telecare; TV 55, The Rosie O’Donnell Show; News 12 Long Island; NBC News 4 and PBS WLIW 21.

Mr. Tonna is a former Adjunct Professor in Theology & Religious Studies at St. John’s University. He serves as: former Chairman, Suffolk County Industrial Development Agency (IDA) and former Vice-Chairman of the Long Island Regional Planning Council. Mr. Tonna is active member of many not-for-profit boards including: The Advanced Energy Research & Technology Center (Stony Brook University), Energeia Board of Advisors (Molloy College); The Long Island Index Advisory Board and Erase Racism’s College of Advisors. He also serves as the Executive Director of the Suffolk County Village Officials Association’s (SCVOA) and the United States Green Building Council-Long Island Chapter (USGBC-LI). Mr. Tonna is Chairman & Commissioner of the South Huntington Water District, Public Trustee of the Stationary Engineer’s Industry Stabilization Fund, Founding Director of Empire National Bank, and on the Board of Directors of BioRestorative Therapies, Inc. (“BRT”) a biotechnology company.

Paul Tonna has received many awards and honors including: Molloy College’s Caritas Medal; St. John’s University St. Vincent De Paul Medal; Suffolk County Human Rights Commission Legislator of the Year; National Association of Social Workers Public Citizen of the Year; Habitat for Humanity Man of the Year; The Nature Conservancy’s Conservation Award Recipient; Networking Magazine’s David Award; Long Island Business News 50 Around 50 Award; ACIT Community Advocate Award; Dr. Martin Luther King, Jr. Commission Public Service Award, American Jewish Committee Community Service Honoree and achieved the rank of Eagle Scout.

Mr. Tonna earned an undergraduate degree in philosophy from New York University, a Masters of Arts degree in theology from Immaculate Conception Seminary and conducted doctoral studies in systematic theology at Fordham University.

Charles S. Ryan, JD, PhD - Director

Dr. Charles S. Ryan joined our Board of Directors in April 2015.

Dr. Ryan is an experienced executive with an extensive background in pharmaceuticals and biotechnology, including strategic planning, IP, and research and business development. From March 2015 to May 2016, he served as the Vice President, General Counsel for Cold Spring Harbor Laboratory (a preeminent international research institution in New York). In this position, he provided guidance to the organization on business, legal and public policy issues, including licensing, patenting, partnering and alliances, investment strategies, compliance and regulatory matters, and new business initiatives.

Prior to his appointment at Cold Spring Harbor, Dr. Ryan served for over a decade at Forest Laboratories (acquired by Actavis plc in July 2014), a specialty pharmaceutical company in New York, as its Senior Vice President & Chief Intellectual Property Counsel. At Forest Laboratories, Dr. Ryan led hundreds of due diligence teams, managed all aspects of patent and trademark litigations, developed cross-functional teams to establish a global strategy for hundreds of products, built and managed the company’s IP team, and recruited, developed and trained executive leaders. He presented a comprehensive risk assessment to Forest’s Board of Directors in connection with numerous acquisitions.

From 2002 to 2003, Dr. Ryan held the position of Chief Operating Officer for Lab 21, Inc., a luxury skincare company providing customized skincare based on a proprietary platform technology. He began his career in biotechnology with The Collaborative Group, Ltd., a bioscience company providing development, research and manufacturing services to the pharmaceutical and skin care industries, where he was employed as the Vice President, General Counsel from 1998 to 2002. Dr. Ryan also has experience in private law practice, holding positions with Darby & Darby, P.C. from 1995 to 1998 and Scully, Scott, Murphy & Presser from 1993 to 1995, both in New York.

Dr. Ryan currently serves on many public, private and non-profit boards including Applied DNA Sciences, Inc., ABS Materials, Inc., GlycoMira Therapeutics, the Center for Biotechnology Advisory Board, and The College of Wooster Board of Trustees. He previously held board seats with Forest Laboratory Holdings, Ltd., New York Biotechnology Association, Stony Brook University Medical Center Development Council (Chair), and Western New England University Board of Trustees.

Dr. Ryan earned his B.A. in Chemistry from The College of Wooster in 1986, a Ph.D. in Oral Biology and Pathology from Stony Brook University in 1990 and his J.D. from Western New England University in 1993.

John M. Desmarais, J.D. - Director

John Desmarais joined our Board of Directors in December 2015.

Mr. Desmarais is the founding partner of Desmarais LLP, an intellectual property trial boutique, and the founder and owner of Round Rock Research LLC, a patent licensing company. From 1997-2009, he was a partner at the international law firm of Kirkland & Ellis LLP and served as a member of the firm’s Management Committee from 2004-2009. Prior to joining Kirkland and after practicing in the area of intellectual property litigation and counseling for several years, he left private practice to serve as an Assistant United States Attorney in the Southern District of New York, where for three years he represented the federal government in criminal jury trials.

Mr. Desmarais’ $1.5 billion judgement for Alcatel-Lucent against Microsoft was one of the largest plaintiff’s jury verdicts in a patent infringement action.

In 2015, Mr. Desmarais was selected by Managing Intellectual Property Magazine as New York IP Litigator of the Year and one of its IP Stars. Mr. Desmarais was selected as the 2012 New York City Litigation Patent Lawyer of the Year by The Best Lawyers in America (2012), 18th Edition. In 2011, Mr. Desmarais was selected by Intellectual Property Asset Management (IAM) Magazine as one of the top 50 individuals, companies and institutions that have helped shape the IP market over the prior eight years. He was selected by Managing Intellectual Property Magazine as U.S. Intellectual Property Practitioner of the Year 2008.

Mr. Desmarais is a member of the bars of New York and Washington, D.C., the U.S. Supreme Court, the Federal Circuit Court of Appeals, and various other federal district courts and courts of appeal. He is also registered to practice before the United States Patent and Trademark Office. Mr. Desmarais obtained a degree in Chemical Engineering from Manhattan College and a law degree from New York University.

Robert B. Catell, MEE - Director

Robert Catell joined our Board of Directors in February 2016.

Mr. Catell was formerly the Chairman and Chief Executive Officer of KeySpan Corporation and KeySpan Energy Delivery, the former Brooklyn Union Gas. His career with Brooklyn Union Gas started in 1958. Following National Grid’s acquisition of KeySpan Corporation, Mr. Catell became Chairman of National Grid, U.S. and Deputy Chairman of National Grid plc.
He currently serves as Chairman of the Board of the Advanced Energy Research and Technology Center (AERTC) at Stony Brook University, New York State Smart Grid Consortium, Cristo Rey Brooklyn High School, Futures in Education Endowment Fund, the New York Energy Policy Institute’s Advisory Council (NYEPI).

Mr. Catell serves on the Board of the following governmental organization: NYS Economic Development Power Allocation Board (EDPAB).
He also serves on the Board of the following not for profit organizations: Brooklyn Community Foundation, City College of New York 21st Century Foundation, Colin Powell School for Civic and Global Leadership, Department of Education; Diocese of Rockville Centre, Feinstein Institute for Medical Research, National Grid Foundation, St. Francis Hospital Foundation, Tomorrow’s Hope Foundation, and the New York City Police Foundation.

Mr. Catell serves on the Board of the following business organizations: American Vanadium Corp. (AVC), Atmos Air Solutions, Long Island Angel Network (LIAN), Long Island Association (LIA), National Petroleum Council, the New York Academy of Sciences (NYAS), ThermoLift Inc., and the Water Company, LLC.

He serves on the Advisory Board for: Advanced Power North America (APNA), Applied DNA Sciences Inc., Atmos Air Solutions, CAI Investments, the Center for Urban Sciences & Progress (CUSP), EC Infosystems, Our Energy Policy Foundation, Posillico Inc., SUNY Farmingdale, the President’s Advisory Council at Adelphi University, VNG.CO, and the Winthrop Hospital Board of Regents.

Mr. Catell is an Executive in Residence at Hofstra University and was named the first “John J. Phelan, Jr. Fellow” of the Robert B. Willumstad School of Business at Adelphi University.

Mr. Catell is a former Chairman of the American Gas Association, Brooklyn Chamber of Commerce, KEYERA Energy Management Ltd., Long Island Association, Partnership for New York City, Inc., U.S. Energy Association (USEA), Business Council of NYS, the Advisory Board of the City College of New York’s School of Engineering, and the Downtown Brooklyn Partnership.

Mr. Catell was a former board member of: the Brooklyn Public Library Foundation, Edison Electric Institute (EEI), Energy Association of NYS, Long Island Foreign Affairs Forum, New York State Energy Research & Development Authority (NYSERDA), the advisory board of HeartShare for Human Services, and the Brooklyn Law School (Member Emeritus).

Mr. Catell is a member of the Association of Energy Engineers, CUNY Business Leadership Council, National Society of Professional Engineers, NYS Society of Professional Engineers, and the Society of Gas Lighting.

Mr. Catell received both his Bachelor’s and Master’s degrees in Mechanical Engineering from the City College of New York and is a registered Professional Engineer. He has attended Columbia University’s Executive Development Program, and the Advanced Management Program at the Harvard Business School.

BioRestorative Therapies: A Stem Cell Biotechnology Company