John Darin has over 30 years of diversified programmatic and administrative experience in the field of social services. Since 1997, he has served as the President and CEO of NADAP, and under his leadership, NADAP has grown from 16 staff serving 1,000 clients to over 300 staff serving approximately 35,000 clients annually. As NADAP’s President, John provides oversight and direction to a multi-service agency with an annual budget of $30 million dedicated to helping people with medical, behavioral health, employment, and social service needs become self-sufficient.
During his tenure, NADAP’s Managed Addiction Treatment Services program (MATS) produced 62% in Medicaid savings and greatly improved the outcomes for numerous chronically ill substance abusers; and the agency’s Health Home Care Management Program was designed to continue this good work.
John holds a Bachelor’s Degree in Business Administration (BBA) from Bernard M. Baruch College. He is a Credentialed Alcoholism and Substance Abuse Counselor (CASAC) and an Internationally Certified Alcohol and Drug Counselor (ICADC). He is also a registered New York State Lobbyist and a Notary Public. He was selected as a National Fellow Leader by Boston University’s Join Together National Fellow Leadership Program.
John currently serves as a consultant to the U.S. Department of Justice and to the U.S. Department of Education. He also serves on the Mayor’s Task Force on Behavioral Health and the Criminal Justice System; is the Chairman of the OASAS’ Talent Management Job Creation Committee and Vice Chairman of The Coalition for Community Services. He is a class A Board member of Coordinated Behavioral Care (CBC) and of iHealth. In addition, John is a Vistage International CEO member.
Gary Stankowski has been with NADAP since 1998, and now serves as the agency’s Executive Vice President and Corporate Compliance Officer. In his role, he has oversight of the agency’s operations and its portfolio of programs and contracts, including all employment, case management, assessment and referral, and Health Home care coordination services. In addition, Gary oversees NADAP’s Human Resources and Information Technology departments. Since joining NADAP, Gary has worked closely with the President and CEO on strategic planning and business development, increasing the organization’s revenue 20-fold. Mr. Stankowski is integrally involved in all business decisions for the organization, and during his tenure he has developed, implemented, and managed innovative program services in addition to providing executive leadership for the agency. Many of the programs that Gary developed were in response to governmental reforms in welfare and healthcare services. Gary’s experience encompasses development of data collection systems, analysis of performance metrics, and identification of business solutions. His expertise includes the effective management of large performance-based government contracts, resulting in cost-efficient and targeted service delivery on behalf of public stakeholders.
Prior to joining NADAP, Gary worked for 15 years in public and private agencies where he gained significant experience in design, delivery and management of programs and services for a variety of special needs populations. He previously held positions with New York City Health & Hospitals Corporation, the Visiting Nurse Service of New York, Beth Israel Medical Center and Catholic Charities. Gary holds a Master’s Degree in Health Administration from the New School University.
Theresa McBurnie joined NADAP in 2003 and now serves as the agency’s Deputy Chief Financial Officer. In her role, she oversees all financial operations of the organization. She is responsible for managing all reporting and communication with the Board of Directors, funders, and vendors, manages banking relationships, and she participates in the development of grant and other funding opportunities.
Prior to joining NADAP, Theresa served in several financial leadership positions in both non-profit and for-profit organizations. She spent seven years as the Director of Finance at a multi-service supportive housing group of non-profit and limited liability companies, where she oversaw complex financial operations and participated in planning the agency’s significant growth. She was also the Vice President of Finance for a large community-based organization where she was involved in the development and implementation of their housing management operations. Prior to joining the non-profit sector, Theresa spent several years as an auditor in New York and Trinidad where she specialized in the non-profit, banking and housing sectors.
Theresa earned a Bachelor of Business Administration from York University in Toronto, Canada, and a Certificate in Non-Profit Management from NYU School of Non-Profit Management.
Joseph Castelluccio is the Senior Vice President, overseeing several NADAP departments. Joseph oversees all operational and clinical aspects of the Substance Abuse Centralized Assessment Program, a high volume assessment and referral program, and the Brooklyn-based Assessment, Case Management and Employment Program (Project ACE). In addition he oversees NADAP’s Health Homes Care Coordination Program serving thousands of clients annually in partnership with medical and behavioral health providers. Joseph also contributes to agency-wide administrative activities in new business development, policy formulation and corporate compliance.
Joseph has over 25 years of leadership experience in the fields of substance use disorder treatment, HIV/AIDS support services, and LGBTQ programming. Prior to joining NADAP, he provided strategic leadership in both the private and not-for-profit sectors of social services, including outpatient treatment, hospital-based programs, and community-based organizations.
Joseph has earned a BA in Psychology from NYU, a Masters Degree in Social Work from Adelphi University, and has conducted additional graduate studies at NYU and Columbia University School of Business. He is a NYS and internationally Credentialed Alcoholism and Substance Abuse Counselor (CASAC and IADC) and has been an adjunct lecturer in psychology and substance use studies at Marymount Manhattan College. Joseph is a member of several professional organizations.
Meryl Kordower is NADAP’s Vice President of Workforce Development and serves as the agency’s Privacy Officer. In her role, she oversees the Case Management and Employment Services Programs operated by NADAP, including the Comprehensive Employment Services (CES), ACCES-VR and Career Pathways II programs in Manhattan, and the Nassau County Employment Services.
Meryl joined NADAP in April 2013, bringing with her more than 20 years of not-for-profit experience in the design, implementation and delivery of workforce development programs helping vulnerable New Yorkers become self-sufficient and independent. Her expertise includes performance-based contracting and business development; program administration; budget analysis and projection; human resources management and training; and quality assurance.
Meryl holds a Master’s of Science Degree from Hunter College.
Katheryne Ralph is the Director of Human Resources. The Human Resources Department is responsible for benefits administration, recruitment and onboarding, and employee relations concerns.
Katheryne has over 20 years of leadership experience in the field of human resources. She has spent her career working in health insurance, tele-health and social services with a focus on mental health services, substance use and treatment and HIV/AIDS support programs. Prior to joining NADAP, she served as a Human Resources executive providing strategic leadership in both the private and not-for-profit sectors. Throughout her career she fostered a workplace culture that values employee development, professionalism and diversity, while maintaining a dedicated focus to organization effectiveness and client service.
Katheryne has earned a BS in Management and Communications from Adelphi University, and has conducted additional studies at New York University. She is a member of the Society of HR Management (SHRM).
Doug Ostrov joins the NADAP team with 20 years of experience in fundraising, economic development, and nonprofit management. For the last nine years, he directed the Financial Counseling Division at the New York Legal Assistance Group (NYLAG). Under Doug’s leadership, the program evolved into one of the largest of its kind serving low to moderate income clients in New York City. Its financial growth benefitted from a diverse blending of support from city government, corporations, private foundations, and banking partners.
Prior to his time in New York City, Doug worked in economic development and project management in Washington D.C. He served as a consultant to the US Agency for International Development (USAID) and an analyst with the Federal Trade Commission (FTC). He is proud of having also established a savings and loan banking program for underserved women entrepreneurs during a two year Peace Corps residency in the Dominican Republic.
Doug holds a B.A. in economics and Spanish from Tufts University, where he graduated magna cum laude and was elected to Phi Beta Kappa. He later earned an M.A. in international relations and economics from Johns Hopkins University School of Advance International Studies (SAIS).
Britta Muehlbach is responsible for NADAP’s business development through grants and contracts. Britta is responsible for identifying, analyzing, and responding to funding opportunities that support and expand NADAP’s service portfolio. Britta also supports NADAP’s marketing and communication efforts.
Britta’s career spans more than 20 years in the substance use disorder treatment field, where she has gained clinical, research, and program planning expertise. Prior to consulting with NADAP, Britta served as Vice President and Director of New Business and Program Planning at a national non-profit agency.
Britta holds a Master’s degree in Psychology from Oldenburg University (Germany).