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Executive Team
Yume Kitasei
Commissioner
Yume Kitasei is a New Yorker with 15 years of experience in city government operations, land use, budget, policy, strategy, and change management. As Commissioner, Kitasei oversees the city government’s workforce, assets, properties, and procurement efforts, delivering high-quality administrative services and advancing the Mamdani Administration’s commitment to transparent leadership and government excellence.
Kitasei has served multiple mayoral administrations in senior roles including as chief of staff to the first deputy mayor, chief of staff to the deputy mayor for operations, and director of city legislative affairs.
Prior to her work in the Mayor’s Office, Kitasei was chief of staff to Council Member Margaret Chin, tying together a career rooted in hands-on governance and a deep understanding of the city she calls home.
Kitasei attended Stuyvesant High School before earning a B.A. in public and international affairs, magna cum laude, from Princeton University.
Sylvia Xiaomeng Li
Chief of Staff
Sylvia Xiaomeng Li is the chief of staff to the DCAS commissioner. In this role, she supports the commissioner in setting priorities, coordinating across DCAS lines of service and external partners, and advancing high-impact operational and policy initiatives to strengthen government operations and deliver results for New Yorkers.
Li is an urban planner by training with more than a decade of experience across the public, nonprofit, and private sectors, leading place-based strategies, complex public reviews, and government innovation in New York State and across the nation. Most recently, she served as a principal at HR&A Advisors, advising public agencies, institutions, and companies on data-informed, people-centered initiatives to expand impact, increase housing opportunity, and advance equitable economic outcomes. Previously, Li spent more than seven years at the NYC Department of City Planning, where she led complex development projections and neighborhood planning efforts in Manhattan and was recognized by Citizens Housing & Planning Council with the Ibo Balton Community Planner Award. Prior to city government, she conducted economic development research on creative industries at the Center for an Urban Future, served as an independent GIS consultant to the New York Academy of Medicine focused on equitable public health policy, and worked on planning and housing projects in China and Indonesia.
Li is a first-generation immigrant and holds a Master of Regional Planning from Cornell University, a professional certificate in Real Estate Finance from CUNY Baruch College, a Certificate of Sustainable Land Use from the University of Copenhagen, and a Bachelor of Engineering from Peking University in Beijing, China.
Shanna Midelton
First Deputy Commissioner
Shanna Midelton is first deputy commissioner overseeing agency assets and citywide administrative functions, including Human Capital, the Office of Citywide Procurement, Information Technology, and Fiscal and Business Management. Prior to being appointed first deputy, Shanna served as DCAS deputy commissioner of Fiscal and Business Management and chief financial officer.
Prior to joining DCAS, Midelton served as a senior advisor at City Hall where she supported the first deputy mayor on education policy and the deputy mayor of strategic initiatives on launching the administration’s blueprint on childcare and early childhood education.
Midelton started her career at the NYC Office of Management & Budget (OMB) where she spent nine years in various roles. As the assistant director for education, she oversaw the education portfolio consisting of expense and capital budgets for the Department of Education, CUNY community colleges, and the School Construction Authority. Also at OMB, Midelton served as the associate director of intergovernmental affairs and community boards.
Midelton previously worked at the International Rescue Committee (IRC), a non-profit organization dedicated to providing humanitarian assistance to countries in conflict. At IRC, Midelton served as a senior coordinator for grants & operations.
Midelton holds an M.A. in International Relations and Economics from the City University of New York and has been active with numerous community organizations, including The Council of Urban Professionals (CUP), as a Big Sister with the Big Brothers Big Sisters Chapter of NYC, and as a mentor with iMentor NYC.
Shameka Overton
Executive Deputy Commissioner, Fleet Management, the Division of Energy Management, and DCAS Police
Shameka Overton is the executive deputy commissioner and oversees Fleet Management, the Division of Energy Management, and DCAS Police. In this role, she is responsible for advancing the city’s fleet operations, supporting energy efficiency and emissions reductions initiatives, and overseeing DCAS Police, the public safety arm of the agency which provides law enforcement and security services for employees and visitors to DCAS-managed facilities.
Prior to her new role, Overton served as the DCAS executive deputy commissioner of Asset and Property Management, where she oversaw the planning and maintenance of the city’s real estate portfolio which is comprised of 22 million square feet of leased property and 15 million square feet of City-owned office and court buildings. She also previously served as Deputy Commissioner of Administration, responsible for internal support services to the agency’s 2,300 employees.
Overton began her career in city government more than 20 years ago as a college intern. She holds a degree in Business Administration and is a Senior Professional in Human Resources.
Laura Ringelheim
Executive Deputy Commissioner of Real Estate Services and Facilities Management and Construction
Laura Ringelheim is the executive deputy commissioner of Real Estate Services and Facilities Management and Construction—overseeing the planning, leasing, and maintenance of the city’s real estate portfolio, as well as supporting the planning, construction management, and operations of 15 million square feet of city-owned office and court buildings.
Prior to this role, Ringelheim served as executive deputy commissioner of Internal Operations, overseeing Fiscal and Business Management, Information Technology, and Administration. She also previously served as the executive deputy commissioner of Asset and Property Management and was responsible for overseeing the planning, management, maintenance, and operations of the City’s real estate portfolio which is comprised of 22 million square feet of leased property and 15 million square feet of City-owned office and court buildings.
Ringelheim came to DCAS in 2016 and served as special counsel to the DCAS Commissioner, providing legal counsel, analysis, and oversight on agency policy and operations. She later served as the deputy commissioner of Real Estate Services where she enhanced the city’s leasing and deed restriction processes, reimagined the design and use of city spaces, and worked collaboratively with agency partners to address their space needs.
Ringelheim received her undergraduate degree from George Washington University and her law degree from Brooklyn Law School. She is admitted to practice law in New York and before the courts of the Southern and Eastern Districts.
Sana Barakat
Deputy Commissioner, Energy Management
Sana Barakat is the deputy commissioner of the Division of Energy Management and the City of New York’s chief decarbonization officer. In this role, Barakat is responsible for overall management of carbon emissions from government operations. She oversees energy projects and programs funding; turnkey implementation of energy efficiency and clean energy projects; energy supply, budgeting and purchasing; large-scale renewable energy development; strategic planning and energy policy development; and workforce development and training.
Prior to joining DCAS, Barakat served as vice president of Arcadis, a global company that aims to deliver sustainable design, engineering, and consultancy solutions. Through her over 30 years’ experience, she has served as the company’s principal-in-charge and client service manager and business development leader, managing large scale and multidisciplinary projects for multiple NYC agencies with a personal portfolio of over $25 million. Notable projects include her work as Engagement Manager for the NYC Mayor’s Office of Management and Budget’s Capital Project Scope Development Services and serving as Project Manager and Project Executive for multiple water and wastewater treatment projects with the NYC Department of Environmental Protection.
Barakat holds a bachelor’s degree in Chemical Engineering and a master’s degree in Environmental Engineering from Manhattan College. She has served in engineering roles for multiple companies, lending her expertise to the planning, design, construction, and staff management of various capital projects. Barakat is a certified Envision Sustainability Professional and a Board Member of the New York Water Environment Association.
Patrick Benn
Deputy Commissioner of Facilities Management and Construction
Patrick Benn is the deputy commissioner of Facilities Management and Construction at the Department of Citywide Administrative Services (DCAS). In this capacity, he oversees the planning, construction management, maintenance, and operations of 15 million square feet of City-owned office and court buildings.
Prior to his appointment at DCAS, he served as a deputy commissioner at the New York City Department of Correction, overseeing critical operations including facilities maintenance and repair, capital projects, and fleet administration.
Benn has over 15 years of experience in facilities and construction management, and managed one of the largest public sector health system facilities at Bellevue Hospital. During the Covid-19 pandemic, his contributions to NYC Health + Hospitals were vital as he established multiple emergency operations, including testing and tracing centers, to ensure uninterrupted services.
Additionally, Benn played a significant role in the first Outposted Therapeutic Housing Units project at Bellevue Hospital, overseeing the demolition and construction of a $400 million Corrections project. He holds multiple licenses in facilities engineering and is committed to overseeing a comprehensive facilities program for DCAS.
Michael Clarke
General Counsel
Michael Clarke oversees both the Office of the General Counsel and the Office of Audit and Compliance Services. Prior to joining DCAS, Clarke worked as a Senior Policy Advisor for Public Safety for the Deputy Mayor of Public Safety. During that time, he also worked as a Senior Advisor for the New York City Charter Commission and as Acting General Counsel for DCAS in 2024. Prior to joining the Mayor’s Office, Clarke worked for the NYPD, most recently as the Director of Legislative Affairs, where he negotiated hundreds of pieces of legislation and testified in front of the City Council more than 40 times. Additionally, he had been assigned to the Risk Management Bureau, where he helped develop and roll out the NYPD’s body-worn camera program and train NYPD officers on investigative encounters.
Clarke began his career with New York City in 2007, when he joined the Manhattan District Attorney’s Office as an Assistant District Attorney. There, he investigated complex narcotics trafficking rings for the Special Narcotics Prosecutor. In 2011, he left the District Attorney’s Office to join the Mayor’s Office of Criminal Justice where he helped run the Mayor’s Task Force on Prescription Painkiller Abuse.
Clarke is a graduate of St. John’s University School of Law and the Catholic University of America.
Roman Gofman
Deputy Commissioner, Office of Citywide Procurement
Roman Gofman is deputy commissioner for the DCAS Office of Citywide Procurement (OCP). In this role, he leads the agency’s procurement efforts, overseeing all sourcing and procuring of goods and services for New York City agencies. Under his leadership, OCP manages a portfolio of multi-year citywide contracts with an operating budget of more than $70 million, and annual spending of over $1.5 billion. Additionally, OCP is charged with quality control for purchases, warehousing, distribution of goods to agencies, and the transfer, sale, and safe disposal of City agencies’ surplus goods. Through OCP, DCAS provides efficient and cost-effective central purchasing, meeting the highest professional standards for City operations.
Gofman has over a decade of experience working for the City of New York. Before joining DCAS in 2018 as deputy agency chief contracting officer, he served as agency chief contracting officer and senior operations manager for NYC Department of City Planning (DCP). Prior to his time at DCP, he served in various procurement roles at the NYC Department of Consumer Affairs, including director of procurement and deputy agency chief contracting officer.
Gofman earned his Bachelor of Science in Business Management & Finance from Brooklyn College, The City University of New York.
Keith Todd Kerman
Deputy Commissioner, Fleet Management and Chief Fleet Officer
Keith Todd Kerman is the deputy commissioner of Fleet Management and the City of New York's first chief fleet officer. In that role, he is responsible for the largest municipal fleet in the United States, with nearly 29,000 vehicles, 80,000 fleet operators, and more than 1,800 employees engaged in fleet operations. Kerman manages inter-agency shared fleet services in partnership with major fleet agencies, including the Police, Fire, Sanitation, and Transportation departments.
Kerman leads implementation of the NYC Clean Fleet initiative to reduce greenhouse gas emissions 50 percent by 2025. The City has one of the greenest fleets in the nation with over 21,000 vehicles operating on some type of alternative fuel, including New York state's largest electric fleet, charging network, and renewable diesel program. Kerman is also a leader in fleet safety as part of the City of New York's Vision Zero initiative to eliminate traffic fatalities.
Kerman has worked in public service for over three decades. Prior to his role at DCAS, he served more than 17 years with NYC Parks, most recently as assistant commissioner for Citywide Operations. Kerman was recipient of the Sloan Public Service Award in 2019. He is a graduate of Harvard College.
Silvia Montalban, Esq.
Chief Citywide Equity and Inclusion Officer/Deputy Commissioner
Silvia Montalban, Esq. is the chief citywide equity and inclusion officer and oversees Citywide Equity and Inclusion (CEI). She is responsible for fostering the City of New York’s emergence as an innovative and global leader in equitable, diverse and inclusive employment practices. CEI is responsible for ensuring proper and consistent implementation of the City’s EEO policy and other related policies and procedures and provides best practice guidance impacting the workforce across over 80 City government agencies.
Montalban is an attorney experienced in institutional compliance with non-discrimination laws and policies, employment law and employee relations matters in both city government and higher education. Prior to her role at DCAS, Montalban worked 10 years at the City University of New York's John Jay College of Criminal Justice, where she served as the head of the Compliance and Diversity department, addressing matters impacting both the employee and student populations. She handled investigations under non-discrimination policies and laws, including Title IX, and led policy training programs for employees and students. During her tenure at John Jay College, she also served as the secondary head of the Office of the General Counsel for several years.
Her prior city government service includes: director of the Employment Law Unit at the NYC Administration for Children's Services; and as an attorney with the NYC Department of Homeless Services monitoring emergency assistance petitions, representing the agency in appeal hearings and labor proceedings, advising the Family Services division in the legal compliance of programmatic initiatives, and later serving as the agency's personnel director.
Montalban is a graduate of Columbia College of Columbia University and earned her Juris Doctor degree from Hofstra University School of Law.
Roman Paprocki
Deputy Commissioner of Administration
Roman Paprocki is the deputy commissioner of Administration – overseeing Human Resources, Payroll & Timekeeping, Employee Relations, Records Management, the Office of Transportation Services, and the CityStore - the official store of the City of New York.
Prior to his appointment at DCAS, Paprocki joined the Department of Correction in 2017 where he served in various roles including hiring manager, director of administration, and finally assistant commissioner. As an assistant commissioner, he oversaw all facets of the hiring process for correction officer candidates including their orientation, medical and psychological assessments, physical agility testing, and thorough background investigation. During his tenure, he managed the successful onboarding of nearly 4,000 correction officer recruits.
Paprocki brings 20 years of experience in operational and change management in both city and state government. He began his career in public service in 2005 at the New York State Assembly where he served as deputy chief of staff and later as chief of staff to an assembly member. In 2012, he transitioned to the New York City Council where he served as a chief of staff.
Paprocki holds a bachelor’s degree from the New York Institute of Technology and a Master of Public Administration from Baruch College, School of Public Affairs.
Nitin Patel
Deputy Commissioner, Information Technology and Chief Information Officer
Nitin Patel is the deputy commissioner of Information Technology and DCAS’ Chief Information Officer. In that role, he is responsible for providing technological guidance for the agency and for establishing and directing the strategic and tactical goals, policies, and procedures for the Information Technology department. He collaborates with the agency's commissioner and consults with all of the agency's lines of service to present new approaches and discuss system changes.
Prior to joining DCAS, Patel worked at New York City’s Financial Information Services Agency implementing Citywide Human Resources, payroll, and timekeeping systems. Previously, he worked in the consulting, media, and healthcare industries and has more than 22 years of experience working as an IT executive linking business strategies and technology solutions.
Patel has an electrical engineering degree from the Indian Institute of Technology.
Katrina Porter
Deputy Commissioner/Chief Human Capital Officer
Katrina Porter is the deputy commissioner and chief human capital officer for the Department of Citywide Administrative Services, which is charged with maintaining the civil service system for the City of New York. She is responsible for the creation and implementation of strategies and initiatives to ensure the city develops and retains the best talent to support and execute agency operations citywide, in a manner consistent with state and civil service law, and laws governing equal employment opportunity. Porter leads the team that develops and interprets citywide policies and programs, administers civil service exams, and develops and conducts professional development and employee training programs, among other critical functions.
With over 25 years of public service, her unwavering dedication and passion for improving government operations have fueled her impactful civil service journey. Within DCAS, Porter has cultivated a deep understanding of government dynamics, civil service intricacies, and innovative problem-solving techniques. With a determination to advance DCAS' mission and enhance New York City's appeal as a flexible and attractive workplace, she is enthusiastic about her role in contributing to New York City’s ongoing success and the agency's growth, highlighting the importance of our workforce.
Porter most recently served as the executive director for Examinations at DCAS, and prior to this role, she served for more than 20 years at the New York City Housing Authority in various capacities.
Carmine Rivetti
Deputy Commissioner of Public Affairs
Carmine Rivetti is the deputy commissioner of Public Affairs. In this role, he oversees external affairs, the daily publication of the City-charter mandated City Record, and the Office of Communications which features multiple specialized units including Creative Services, Media Services, Special Events, and Reproduction Services. Under his leadership, the teams within Public Affairs work synergistically to enhance the DCAS’ public image, manage its reputation, and achieve its strategic objectives by fostering positive relationships and effectively communicating its mission and values. Most recently, Rivetti served as the agency chief of staff, providing strategic support and guidance, liaising with senior staff to streamline and expedite processes, and fostering a culture of increased transparency and collaboration.
Before joining DCAS in 2014, Rivetti served as associate vice president of Income for the United Way of New York City overseeing social service-related initiatives, which include financial management, food stamps outreach, hunger prevention, and the Emergency Food and Shelter Program.
He has spent more than 20 years in the public sector starting his career as a legislative financial analyst at the New York City Council. Rivetti continued his career as a government relations specialist with the American Cancer Society and NYCHA and would later serve as assistant commissioner for Government and Community Relations at the Department of Homeless Services.
Rivetti holds a Master's in social work from Columbia University and a Bachelor of Arts from Drew University.