Mayor-elect Marty Walsh's transition team on Friday added three co-chairs, including the former CEO of Boston Children's hospital, a UMass Boston professor and the head of a Roxbury-based organization.

The new co-chairs, who join the six that were announced earlier this month, include Dr. James Mandell, a pediatric urologic surgeon, who stepped down as head of Children's Hospital in 2012; Prof. Paul Watanabe, director of the Institute for Asian American Studies at UMass Boston; and Beth Williams, the CEO of the Roxbury Technical Corporation. The previously announced co-chairs include UMass Building Authority's Katherine Craven, local activist Joyce Linehan, the Boston Municipal Research Bureau's Sam Tyler and former mayoral rivals Charlotte Golar Richie, John Barros and Felix Arroyo.

On Friday, the transition team also announced 22 people who will be part of subcommittees on arts and culture, economic development and human services. The individuals named include Gov. Deval Patrick's Public Safety Secretary Andrea Cabral; education consultant George Perry, who also advised New York City Mayor-Elect Bill de Blasio; and former state Rep. Marie St. Fleur.

The full list is available below. A transition spokeswoman said the list remains in formation.

Arts and Culture: Gary Dunning, President & Executive Director, Celebrity Series of Boston; Cuong Hoang, Director of Programs, Mott Philanthropic

Economic Development: Donna Cupelo, Regional President, Verizon; Pat Moscaritolo, CEO, Greater Boston Convention and Visitor’s Bureau

Education: George Perry, PhD, Education Consultant; Jeri Robinson, Vice President of Early Childhood Education, Boston Children’s Museum

Housing: Vanessa Calderon-Rosado, PhD, CEO Inquilinos Boricuas en Accion (IBA); Joe Kriesberg, CEO, Massachusetts Association of Community Development Corporations

Human Services: Sandra K. Albright, former Executive Director, Kit Clark Senior Services; Marie St. Fleur, former State Representative

Basic City Services: Rosemarie Sansone, President, Downtown Boston Business Improvement District; My Lam, Viet AID

Public Health: Dr. Paula Johnson, Executive Director, Connors Center for Women's Health and Gender Biology, and Chief, Division of Women's Health, Brigham & Women's Hospital; David Rosenbloom, Professor of Public Health and Interim Chair of the Department of Health Policy and Management, Boston University School of Public Health

Public Safety: Robert Dunford, Former Superintendent-in-Chief, Boston Police Department; Andrea Cabral, Massachusetts Secretary of Public Safety and former Suffolk County Sheriff

Energy, Environment and Open Space: Alex Bok, Founder & CEO, Boston Baseball Field of Dreams; Amos Hostetter, Barr Foundation

Transportation: Rick Dimino, President & CEO, A Better City; Vivien Li, President, Boston Harbor Association

Youth: Mariama White-Hammond, Executive Director, Project HIP-HOP; Ilyitch Nahiely Tabora, Director, Talented and Gifted (TAG) Program