Executive Leaders and Board of Directors

Executive Leaders

Johns Hopkins Health Plans is committed to transforming the future of health care. A leader in provider-sponsored health plans, we are privileged to play a role in improving the health and well-being of the lives and communities we serve. Meet our executive team of passionate, dedicated leaders who are driving health care innovation and creating targeted solutions to deliver better health outcomes.


J.P. Holland

President and Chief Executive Officer

As President & CEO, J.P. Holland is responsible for the strategy and business results for Johns Hopkins Health Plans, in support of the over 700,000 lives served across Medicaid, Medicare, employer group, military health, and health solutions. Prior to joining in 2019, Mr. Holland served in managed care leadership roles at Anthem, Amerigroup, and WellCare. Earlier in his career, Mr. Holland worked as a management consultant and served in the U.S. Navy as a pilot. He earned his B.S. in economics from the U.S. Naval Academy and his M.B.A. from the Wharton School at the University of Pennsylvania. He enjoys outdoor activities, boating, and spending time with his family in Annapolis.


Dan Chojnowski

Senior Vice President and Chief Financial Officer

As Senior Vice President of Finance and Chief Financial Officer, Dan Chojnowski provides executive leadership, vision and financial competencies in support of Johns Hopkins Health Plans. He organizes and directs the financial operations of Johns Hopkins Health Plans including budgeting, forecasting, financial analysis, revenue management, actuarial, medical economics and clinical analytics. In addition to managing financial operations and functions, Mr. Chojnowski is responsible for defining, articulating and addressing the organization's current and future financial needs and opportunities.

Mr. Chojnowski has over 20 years of progressive experience in finance and accounting. Prior to joining, he was the Corporate Controller, Vice President of Finance and Chief Financial Officer for Martin's Point HealthCare. Mr. Chojnowski began his career in public accounting where he led financial audits of health care and not-for-profit organizations and financial institutions. Mr. Chojnowski holds an MS in Accounting and a BS in Business Administration, both from the University of New Hampshire.

Mary Cooke

Mary H. Cooke, D.H.A.

Vice President, US Family Health Plan

As Vice President of the Uniformed Services Family Health Plan, Mary leads a capitated military health plan sponsored by the Department of Defense. Serving military retirees and active duty family members residing in Maryland, Virginia, and surrounding states, Mary is responsible for health plan financing, contract administration, negotiation, and strategy. She also leads strategic partnerships between the Defense Health Agency and Johns Hopkins Medicine.

Dr. Cooke has held progressive leadership positions in the health care industry for more than 30 years, with two decades of expertise in military health care. Her career encompasses leadership roles in emergency care, quality and risk management, and health care delivery. She served as both Chairman and Member of the US Family Health Plan Alliance LLC Board of Directors for more than a decade.

Dr. Cooke holds a Master of Science (Health Policy & Administration) and Doctor of Health Administration from Central Michigan University where she received the College of Graduate Studies’ Award for Exemplary Scholarship.

Paul Gillan

Paul A. Gillan

Practice Group Leader and Chief Legal Counsel

Paul Gillan is responsible for providing legal support to the managed care and population health efforts of Johns Hopkins Medicine, including providing primary support to Johns Hopkins Health Plans and the health plans it manages.

Mr. Gillan is a graduate of Princeton University and a cum laude graduate of the University of Baltimore School of Law. He has practiced health law exclusively since 1996 and has dealt extensively and in-depth with both payor and provider legal issues. His experience includes representing hospitals, health systems and other health care providers during his 13 years in private practice, in addition to eight years in-house at a nationally ranked regional health plan.

Ed Kumian

Ed Kumian

Chief Executive Officer, Priority Partners

Ed Kumian has the responsibility for oversight of over 290,000 Medicaid members across all counties within Maryland. While Mr. Kumian has been with Johns Hopkins Health Plans primarily in the capacity as CFO of Priority Partners for 15 years, he has recently been promoted to the role of CEO. In the capacity as CEO, Mr. Kumian has led the organization through a strategic planning process and helped start the Maryland Medicaid Managed Care Association which pulls together all eight of the Maryland Medicaid MCOs for purposes of working with the Maryland Department of Health on rate and operational issues.

Prior to joining Johns Hopkins Health Care, Mr. Kumian worked as a consultant with KPMG and PwC where he provided consulting services to Priority Partners and helped set up its original provider contracts. Mr. Kumian received his bachelor’s degree in Mathematics from the University of Delaware.

Ryan O'Donnell

Ryan O'Donnell

Senior Vice President and Chief Operating Officer

As COO, Ryan O'Donnell leads Johns Hopkins Health Plans operations, including sales and marketing, customer service, claims, network management and value based care, IT, facilities and other areas. Ryan and the operations division enable Johns Hopkins Health Plans commitment to providing access to high quality, cost effective health care and improving the well-being of our members and communities.

Ryan's leadership experience includes strategy, operations, IT and market-facing roles across multiple aspects of the health care industry, including health insurance, integrated delivery systems, pharmacy benefit manager (PBM) and electronic health record implementations. Prior to joining Johns Hopkins Health Plans, Ryan spent 13 years in leadership roles at Blue Cross Blue Shield of Massachusetts. Most recently, he was the senior vice president of customer service and pharmacy benefit manager (PBM) implementation at BCBSMA, which serves 2.9 million members. He has also help positions at Henry Ford Health System and CGI Inc. Healthcare Solutions Group.

Craig Williams

Craig A. Williams, Ph.D.

Vice President, Health Care Innovation and Management Solutions

As Vice President of Health Care Innovation and Management Solutions, Craig is responsible for leading a business unit that brings together Johns Hopkins HealthCare Solutions and Venture businesses to form a single platform that partners with Johns Hopkins faculty to advance applied solutions to meet health care challenges in the marketplace. As Special Advisor to the President of Johns Hopkins University, Dr. Williams supports the University's role in the economic transformation of Baltimore and Maryland.

Prior to joining Johns Hopkins in 2016, Dr. Williams served two Governors of Maryland and a U.S. Representative. His roles included responsibility for state and federal health care policy innovation, administration, and financing. Dr. Williams also worked for Amgen, Inc., serving for eight years as Director of Policy.

Dr. Williams earned his Bachelor of Arts (English & Political Science) from Bethany College, WV. He earned his Master of Arts and Ph.D. from the University of Oklahoma (Political Science). 

Marja Wilson

Marja L. Wilson, M.H.A., M.B.A.

Vice President, Medicare Advantage

Marja L. Wilson leads the Hopkins Health Advantage (HHA) Medicare Advantage program. In this role she has the responsibility for the program’s overall strategy, growth and P&L performance. Ms. Wilson oversees the alignment and delivery of new products, service expansions, , operational plan functions and overall administration of the Medicare advantage program.

Ms. Wilson has held progressive leadership positions in the industry for more than 25 years and has served in two large BlueCross BlueShield organizations prior to joining Johns Hopkins Health Plans. As the Vice President of Government Programs for Cambia Health Solutions, she led the regional development of product strategy and performance oversight of their Medicare programs covering WA, OR, ID and UT. Before moving to the Northwest, Ms. Wilson was part of Highmark’s executive leadership in Pittsburgh, Pennsylvania.

Outside of the health insurance experience, Ms. Wilson served as a Principle of W2Health consulting. She holds a Bachelor of Arts (Economics, Politics and Philosophy with a certificate in Russian and East European Studies) from University of Pittsburgh, Pennsylvania; Master of Business Administration from Katz Graduate School of Business; and Master of Health Administration from Graduate School of Public Health University of Pittsburgh.

Headshot of Joydeep Mukherjee

Joy Mukherjee

Vice President of Information Technology and Chief Information Officer

As Vice President of Information Technology and CIO, Joy Mukherjee brings vision and multifaceted executive leadership to Johns Hopkins Health Plans IT operations and teams. Joy directs the spectrum of IT operations, including data and analytics, IT security, member and provider experience and core system modernization. Joy is also responsible for anticipating and cultivating opportunities for our IT teams to drive organizational progress.

Joy has nearly 30 years of IT experience, over 20 of which working in and leading health plan IT. Prior to joining, Joy served as VP of Application Development & Support at CareSource and previously spent nearly two decades in various IT leadership roles at Blue Cross Blue Shield of Massachusetts. Joy leads with a collaborative approach, building strong cross-functional teams that consistently deliver impactful solutions that foster a culture of innovation and continuous improvement. Joy earned his bachelor’s degrees in Computer Engineering from Manipal Institute of Technology, India, and a Master of Business Administration in Finance from University of Massachusetts.


Board of Directors

Name Title
Paul J. Diaz, Chair President & CEO, Myriad Genetics, Inc.
Kevin W. Sowers, M.S.N., R.N., F.A.A.N., Co-Vice Chair President, The Johns Hopkins Health System Corporation/Johns Hopkins Hospital; EVP, Johns Hopkins Medicine
Theodore L. DeWeese, M.D., Co-Vice Chair Dean/CEO, Johns Hopkins Medicine; Vice Dean for Clinical Affairs; Professor and Chief, Radiation Oncology and Molecular Radiation Services, Johns Hopkins University School of Medicine
Carolyn C. Carpenter, M.H.A., FACHE
President, National Capital Region; The Johns Hopkins Health System Corporation
Michael D. Hankin
President and CEO, Brown Advisory
Laurent Heller Executive Vice President for Finance & Administration, The Johns Hopkins University
David C. Hodgson
Vice Chairman, General Atlantic
James P. Holland
President, Johns Hopkins Health Plans
J. Mario Molina, M.D. Chairman of United States of Care; Vice Chair of National Museum of the American Latino; Former Chairman and CEO, Molina Healthcare
Mayo A. Shattuck
Chairman, Exelon Corporation (Ret.)