Kenneth J. Bates, MA
President & Chief Executive Officer
Ken Bates has been at Open Sky Community Services since 2016 as President and Chief Executive Officer. He has extensive leadership experience in non-profit industry.
Prior to his position at Open Sky, he served as CEO at The Bridge of Central Massachusetts and Executive Director of New Business and Financial Growth for the Commonwealth Medicine at UMass Medical School. He also served as Vice-President of Behavioral Health at Advocates, Inc and as Director of Outpatient Services at Spectrum Health Systems.
He received his undergraduate degree in Urban Studies from Worcester State University and his Master’s Degree in Counseling Psychology from Assumption University. In 2021 he was awarded an honorary Ph.D. from Assumption University.
He currently serves as Vice Chairperson on the Board of the Association of Behavioral Healthcare of Massachusetts, Board Member on Parent Professional Advocacy League, Board Member of Harrington Healthcare System, Co-Chair of the Mayor’s Mental Health Task Force (Worcester) and Steering Committee Member for the Coalition for Healthy Greater Worcester. He was formerly on the board of the New England Association of Drug Court Professionals.
Mary Benvenuto, MS
Executive Vice President,
Chief Financial and Operating Officer
Mary Benvenuto has been with Open Sky Community Services since 2022 as Chief Financial and Operating Officer. She has close to 20 years of experience in the areas of finance, strategy and leadership and most recently served as CFO at Manet Community Health Center in Quincy where she oversaw all aspects of their financial health. She has also held senior roles in finance and operations at Last Mile Health and the United Way of Rhode Island.
Mary holds a Bachelor's degree in Accounting from Bryant University and a Master's of Science degree in Accounting from Nichols College. She has served on the board of the Blackstone Valley Boys and Girls Club, Youth Pride Providence, and the Blackstone Millville School District Strategic Planning Committee.
Lorie C. Martiska, MS
Executive Vice President, Chief Advancement Officer
Lorie C. Martiska has been with Open Sky Community Services since 2012 as Executive Vice President, Chief Advancement Officer, previously working at The Bridge of Central Massachusetts. Earlier in her career she held the role of VP of Community Relations and Development for a hospital in the region. Her primary roles include fundraising & grants, marketing, communications and publications. She played a leadership role in strategic communications and naming for the affiliated agency.
She holds a BS in English from Fitchburg State University and an MS in Healthcare Communications from Simmons University. Lorie currently serves as Clerk of the United Way Service Executives Group, Member of the Foundation Board for Fitchburg State University, and a Member of the Mayor’s Mental Health Task Force.
Emmanuel "Manny" Oppong, MSW, LICSW
Executive Vice President, Chief Program Officer
Emmanuel "Manny" Oppong has been with Open Sky Community Services since 2024 as Executive Vice President, Chief Program Officer. As Chief Program Officer, Manny is responsible for all aspects of service delivery across Open Sky’s broad continuum of care for children, adults and families affected by mental health and substance use disorders, intellectual and developmental disabilities, brain injury, homelessness and other complex challenges.
Prior to joining Open Sky, Manny was Vice President of Service Integration at Riverside Community Care. He has also served as an area clinical manager with the Massachusetts Department of Children and Families and was an assistant director with the Boston Emergency Services team providing mobile crisis intervention.
Manny is a licensed independent clinical social worker, and earned a Master of Social Work degree from Simmons University and studied Human Services Leadership and Public Administration at Suffolk University through a fellowship with the Executive Office of Health and Human Services. He holds a bachelor’s degree in English Education from the University of Education in Ghana
Liz Olivera-Mustard, MBA, CHPC, CHC
Executive Vice President,
Chief Quality & Compliance Officer
Liz Olivera-Mustard has been with Open Sky Community Services since 2017, currently serving as Executive Vice President, Chief Quality & Compliance Officer.
Liz holds a BS in Medical Technology from UMass Lowell and an MBA from Anna Maria College. She is certified in healthcare compliance CHC and privacy CHPC. She has also completed the Leadership Course through the Massachusetts Institute for Community Health Leadership. Liz previously served on the Board for The Bridge of Central Mass and on the Board of the Meyers Primary Care Institute. She also served on the PCMHI Steering Committee as Emergency Preparedness Lead and was a MassMAP member (Massachusetts Long Term Care Mutual Aid Association) from 2010 to 2012. She was a Delegate for the Citizens Ambassador Program – People to People Mission to China in June 1997, and her first language is Spanish.
Daniel Bairos
Vice President of Financial Planning and Analysis
Jennifer Bridgers
Vice President of Accounting and Financial Reporting
Karen Duby
Vice President of Community Resiliency Services
Kelley Gamble
Vice President of Community Engagement
Stefanie Gregware
Vice President of Clinical Practice
Lisa Hella
Vice President of Intellectual and Developmental Services
Lisa Jeronymo
Vice President of Human Resources
Ryan Johnston
Vice President of Service Integration and Programmatic Risk
David Lambert
Vice President of Business Development
Elizabeth Mandell
Vice President of Behavioral Health Services
Ryan Moore
Vice President of Facilities
Matt Sanford
Vice President of Information Technology