Board of Trustees


Interim President • Edward Tanenbaum
Vice President • Les Lieberrman
Vice President • Ronald Wurtzburger
Vice President • Jack Rosen
Assistant Treasurer • Eric Mendel


Joshua Berkowitz

Joshua Berkowitz has over 30 years of Global Macro investing experience.  He is currently a Macro Portfolio Manager at Balyasny Asset Management, Founder and President of Shield Street Capital, a family office focused on Global Macro and alternative investments, and CEO of PlaySqor, a sports gaming company.  Previously, Joshua founded Woodbine Capital Advisors, a Global Macro Hedge Fund that managed $3.5B, and served as the Chief Executive and Investment Officer.  Joshua has held Global Macro Portfolio Manager positions at several prominent Hedge Funds and Investment Banks including Soros Fund Management, SAC Capital Advisors, Goldman Sachs, and Caxton Associates.  Joshua graduated from George Washington University with a Bachelor of Science degree.  He also holds an MBA from New York University Stern School of Business.  Joshua is a Member of the Kennedy Center International Committee and is serving a six-year term on the Trilateral Commission.  He is also a Board Member of the South African Institute for Race Relations and a member of the National Eagle Scout Association.

To contact Joshua Berkowitz, please email [email protected]

David Cornstein

David B. Cornstein was appointed by President Donald Trump to serve as the Ambassador Extraordinary and Plenipotentiary of the United States of America to Hungary.  He was confirmed by the United States Senate on May 24, 2018 and presented his credentials to the President of the Republic of Hungary on June 25, 2018.

A lifelong New Yorker, David Cornstein has built a record of achievement as a businessman and leader.  As Chairman and CEO, he helped build over a billion-dollar NASDAQ Stock Exchange Company and, in addition, at Off Track Betting – NYC, he turned around a failing government entity where he was Chairman for 16 years to make it effective, efficient, and very profitable.

David Cornstein was named the Chairman of the New York State Olympic Games Commission to bring the 2012 Summer Olympic Games to New York City.  He has served as a Board Member of Jacob Javits Development Corporation, a member on the New York State Council on State Productivity, Board Member of Battery Park, and with Richard Parsons as Vice Chairman of the Economic Development Corporation of New York City.

For his lifelong achievements in business and public service, he has been honored as “Man of the Year” by the Juvenile Diabetes Foundation, Chemotherapy Foundation, Friars Club Foundation, and the Park East Day School, and has helped raise millions of dollars for these organizations.  He was the commencement speaker at the Stern School of Business of New York University.  He served on the Board of Directors of New York Law School, Jewish Community Relations Council, Marine Corps-Law Enforcement Foundation, and Park East Synagogue.  In the past, he served as Chairman of the World Presidents’ Organization and is currently a member of the Chief Executives’ Organization.  He is an active philanthropist through the David and Sheila Cornstein Foundation.

Ambassador Cornstein earned a Bachelor of Arts degree from Lafayette College and a Masters of Business Administration from New York University.  He and his wife, Sheila, have two children and one grandson.

Ambassador Cornstein concluded his service as U.S. Ambassador to Hungary on October 30, 2020.

To contact David Cornstein, please email [email protected]

Harvey Feuerstein

Harvey Feuerstein is chairman emeritus of Herrick, Feinstein LLP. He served as chairman of the firm’s Executive Committee from 2001 to 2012 and, previously, as chair of the firm’s Litigation Department. Harvey first joined the firm in 1969, when it was comprised of only four real estate lawyers; and he has been a vibrant member of the firm for over 50 years. Harvey concentrates his practice on business divorce, representing owners who seek to profitably disengage from their associations with successful businesses and professional firms, including law firms and medical partnerships. He steps in when internal strife threatens the continued success of the enterprise and one or more owners are increasingly distressed and emotionally drained. Harvey’s combination of business savvy, deal-making and litigation skills substantially improves the likelihood of a successful separation, and clients have the benefit of a single person overseeing the resolution of the myriad business, tax and legal issues involved in every business divorce. Many major law firms and prominent owners of privately held businesses have taken advantage of Harvey’s experience as a counselor, negotiator and litigator, and he has drawn the attention of the nation’s leading media over the years.



Real Estate Litigation & Dispute Resolution

Alternative Dispute Resolution

Restructuring & Business Divorce


Harvard Law School (J.D., 1962)

Columbia College at Columbia University (A.B., 1958)

Memberships & Associations

New York City Bar Association

Life Fellow, The New York Bar Foundation

Member, TAGLaw®

Harvey has been married to his wife Audrey for more than 60 years. Until recently Audrey was an adjunct professor of Education at Fordham University teaching teachers who were matriculating towards receiving Master’s Degrees in Education how they could improve their teaching skills and become more effective teachers. Harvey and Audrey have two sons, Eric and Mark, both of whom were bar mitzvahed at Park East,   after attending the after-school Park East Talmud Torah led by Rabbi Harold Einsidler.

Eric, now 55, attended Cornell as an undergraduate and Cardozo Law School and is the Co-Chair of the real estate department at the international law firm, Gibson, Dunn and Crutcher.

Mark, after graduating from Princeton in 1993, and having performed in some 14 plays over his Princeton career, won a Fulbright Fellowship to study for one year at the London Academy of Dramatic Arts (LAMDA) to improve his craft. Mark has had a varied and successful acting career, having performed on Broadway, TV, and in movies.

To contact Harvey Feuerstein, please email [email protected]

Hugh Greenberg

After graduating NYU School of Commerce, Hugh joined the family business of Louis Greenberg

Plumbing and Heating Supply Company and became its president until he retired. Hugh devoted his time and energy in assisting many worthwhile charitable causes. He is a Trustee of Park East Synagogue on the Upper East Side in Manhattan, a trustee of Brookdale Hospital and Medical Center, and serves on the Board of Directors of Boys Town, Jerusalem. Hugh has been honored by the UJA, ORT, United Hospital Fund and Masons, as well as many other

organizations. He is a major supporter of various Jewish causes. He, together with his wife Beverly, now retired, was active in education both as a teacher of gifted and talented children and as an administrator. She has served as President of Park East Synagogue Sisterhood and is currently a member of the Rabbi Arthur Schneier Park East Day

School Board of Education. She is involved in community organizations such as the Brooklyn Museum, Hadassah and is the past president of the Women’s League of Brookdale Hospital. Together, Hugh and Beverly enjoy staying active and involved in a hopefully peaceful world.

To contact Hugh Greenberg, please email [email protected]

Harry Karten

Harry Karten is the president of I. Karten Bermaha Textile Company, a family-owned import-export business. Harry’s other companies which he owns and is president of are HK Realty; J.S.I.K International., LLC; 990 GP Corp; and Rockland Properties. He is a Trustee of the synagogue and a board member of the Day School. Harry has in the past financed the Park East Day School.

In addition to being an Executive Board member of the American Society for Yad Vashem Harry has in the past been the regional president of the Zionist Organization of America. The “Moon Rose” Window on top of the Ark in the Sanctuary and the art gallery were dedicated by Harry and his sisters, Bernice Bookhamer and Marcia Toledano, in memory of their parents Isidore and Julia Karten, who were devoted patrons of the synagogue.

Harry and Danielle Karten have three children, Jonathan, Sharone, and Isidore. Currently, Harry is the President of the nonprofit organization Sharone Edry Memorial Fund, which is engaged in massive fundraising under the name which has been buying and shipping bulletproof vests with ceramic inserts, boots, helmets and various blankets and clothing to keep our soldiers safe.

To contact Harry Karten, please email [email protected]

Les Lieberrman

Les and Barri’s family have been members of Park East Synagogue since 1961 and they were married at Park East in 2000. Their children, Grace, Sam and Cara, all celebrated their Bar and Bat Mitzvahs at Park East and graduated from the Leon and Gina Fromer Youth Enrichment Center.

Les has been extremely active in Synagogue affairs. He is a former “Chatan Torah” and both he and Barri were honorees at the 2013 Annual Park East Day School Dinner. Les serves as one of the pillar Trustees of Park East Synagogue.

Les is a graduate of the Wharton School of Business and Finance. He has over 40 years of banking and lending experience serving in many leadership roles including Vice Chairman of FCB Financial Holdings, Inc., and CEO of Indosuez Capital. He is also the former Managing Director of Drexel Burnham Lambert, and a former member of the Management Committee at Kidder Peabody & Co., Inc.

Les is currently Co-Chairman of the Children’s Cancer and Blood Foundation and a Trustee of Franklin and Marshall College. He is also a former Adjunct Professor of Finance at the Lubin School of Business at Pace University.

To contact Les Lieberrmann, please email [email protected]

Eric Mendel

Eric, who serves as the Synagogue’s Assistant Treasurer, has worked as an innovator in the long-term healthcare space for more than two decades. He is CEO of Avenir Healthcare Group, which provides management, consulting, and administrative services to long-term care facilities. Eric was appointed by the Mayor to serve on the Age-Friendly NYC Commission and serves on several Boards, including the Empire State Association of Assisted Living, the Maimonides Medical Center Cardiac Advisory Board, and the Board of Directors of the historic Mount Carmel Cemetery. He holds a Bachelor’s degree in Economics from Boston University and a Master’s Degree in Health Systems Administration from Rochester Institute of Technology.

Eric and Morgan Mendel are deeply involved in Park East Synagogue’s religious, educational, and cultural programs and were honored at the 132nd Anniversary Dinner Dance. The Synagogue has played a key role in many of their milestones as a couple, as they were married by Rabbi Arthur Schnier in 2013. The Mendel’s are blessed with three young children; Landon, Serene, and Owen.

To contact Eric Mendel, please email [email protected]

Dr. Michael Reich

To contact Dr. Michael Reich, please email [email protected]

Dr. Sigmund Rolat

To contact Dr. Sigmund Rolat, please email [email protected]

Jack Rosen

Mr. Rosen is an American political and public policy advocate, public diplomat, philanthropist, and businessman. He currently serves as Chairman of Rosen Partners, Chairman of the American Jewish Congress, and Chairman of the American Council for World Jewry. Mr. Rosen has acquired and developed a dynamic portfolio of resorts, hotels, multi-family properties, and commercial developments across the United States, Europe, and Asia. His relationships with top-tier capital and development partners fueled a strategic expansion of Rosen Partners in the United States and overseas.

In addition, he has a wide array of business interests beyond real estate including ventures in healthcare and telecommunications. Mr. Rosen is very active in American politics and world affairs and has personally hosted dozens of world leaders – including President Joe Biden, a friend for over 30 years, President Bill Clinton, President Barack Obama, as well as heads of state from Latin America, the Middle East, and Asia. As the host of an annual International Conference for Mayors, Rosen has engaged local leaders from around the world, including several who went on to become heads of state.  Mr. Rosen has frequently served as a liaison between the United States government and the Prime Minister of Israel with the leaders of Middle Eastern states including His Royal Highness the Crown Prince Kingdom of Saudi Arabia Mohammed bin Salman, His Highness the Crown Prince of the Emirate of Abu Dhabi Mohammed bin Zayed, and His Highness the Emir of Qatar Sheikh Tamim bin Khalifa Al Thani. He has also served on numerous international Congressional Missions, including those to the Persian Gulf.

Through his leadership of the American Jewish Congress, Rosen has been a prominent advocate of Science Diplomacy, which works to strengthen diplomatic ties between the United States and Israel and developing nations across the Middle East and beyond, through technological innovations that bring widespread medical, social, and economic benefits.

Mr. Rosen is a Member of the Council on Foreign Relations. He served on the NASA Advisory Board, the Board of Governors at Hebrew University, and as a professor at Peking University, where he lectured in the Master of Business Administration graduate program. A graduate of the City University of New York, Mr. Rosen and his wife reside in New York and have two sons.

To contact Jack Rosen, please email [email protected]

Dr. Daniel F. Roses

Daniel F. Roses, MD, FACS is the Jules Leonard Whitehill Professor of Surgery and Oncology of the NYU Grossman School of Medicine.

A surgeon, researcher and educator, Dr. Roses has received the Solomon A. Berson Alumni Achievement Award in Clinical Science of the NYU Grossman School of Medicine, the Great Teacher Award of New York University and is a five-time recipient of the Distinguished Teacher Award of the NYU Grossman School of Medicine. He has received the Excellence in Medicine Award of the Israel Cancer Research Fund, the Physician of the Year Award of the Rambam Medical Center, the Humanitarian Award of the Melanoma Research Foundation, the Manhattan Breast Cancer Awareness Award, and the Gender Equity Award of the American Medical Women’s Association.

Dr. Roses was a Principal Investigator of the National Cancer Institute Selective Lymphadenectomy Trial that led to sentinel node biopsy being the standard of care in the treatment of melanoma and breast cancer.

He directs the Shifrin-Myers Breast Cancer Discovery Fund and the Cancer Surgery Research Fund. He has served as New York State Chairman of the Commission on Cancer of the American College of Surgeons and as President of the New York Surgical Society.

He is the author or co-author of over 275 published manuscripts and two major textbooks “Breast Cancer” and the ”Cutaneous Malignant Melanoma”. He is a member of the American Surgical Association, the Society of Surgical Oncology, the American Association for Cancer Research, and the American Society of Clinical Oncology.  He is listed in America’s Top Doctors, Top Doctors for Cancer, Top Doctors New York Metro Area (Castle Connolly), and New York Magazine Top Doctors.

Dr. Roses has served on active duty as Lieutenant Commander with the Medical Corps of the U. S. Navy.

Dr. Roses and Helene have been members of Park East Synagogue for over 45 years. He has served as Trustee and as Chairman of the Cantorial Committee. Their children Arthur, Robert and Rebecca had their Bar Mitzvahs and Bat Mitzvah at Park East. Arthur and Amy Roses were married at Park East and are now members. Daniel and Helene are blessed with six grandchildren, Benjamin, Leonard, Elissa, Ruby, Josephine and Luna. Arthur and Amy’s son Leonard and daughter Josephine had their Bar and Bat Mitzvahs at Park East as did Rebecca and Travis’ daughter Ruby. Her sister Luna attends the Park East Hebrew School.

To contact Dr. Daniel F. Roses, please email [email protected]

Bruce Solvin

To contact Bruce Solvin, please email [email protected]

Zygmunt Wilf

Zygi Wilf is a real estate developer, attorney, and Owner/Chairman of the Minnesota Vikings football team. He serves as a senior principal of Garden Homes, one of the largest real estate development firms in the United States, and a partner in the Wilf Law Firm. Over the course of Zygi’s career, he has developed residential and commercial properties in many municipalities throughout New Jersey, the region, and the country.

Zygi played a key role in the opening of the U.S. Bank Stadium, which was the largest construction project in Minnesota state history. Under Zygi’s stewardship, the franchise delivered a historic public-private partnership to build the multi-use stadium which will serve as the centerpiece of an economic development package for the state and region and the transformation of East Town in Minneapolis.

He has been involved in numerous philanthropic causes through the Wilf Family Foundations. Mr. Wilf serves as Vice Chairperson of the Albert Einstein College of Medicine in Bronx, NY, and on the Board of Governors of Yeshiva University.

He graduated from Fairleigh Dickinson University in 1971 with a BA in Economics and a J.D. from New York Law School. He and his wife Audrey, have four children.

To contact Zygmunt Wilf, please email [email protected]