Sg2 Experts

Sg2’s team of experts leads the development of analytics, intelligence and consulting. Their thoughtful analysis and provocative opinions guide health care leaders as they navigate the evolving health care landscape.


Madeleine McDowell, MD, FAAP

Madeleine McDowell, MD, FAAP Senior Principal and Medical Director of Quality and Strategy

Madeleine leverages a decade of clinical experience in leading the development and application of Sg2’s data analytic tools and providing clinical insight for all Sg2 research—service line, strategic planning, performance strategy and clinical technology. As medical director, she provides thought leadership in quality in collaboration with experts across the Vizient...

Bill Woodson Senior Principal

Bill is a visionary on the future of health care and serves as a national thought leader for Sg2. As senior principal, he leads Sg2’s strategic planning research, focusing on developments in health care strategy, policy and growth. He is a frequent keynote speaker at Sg2 events and other industry...

Jeffrey Moser Principal

As a thought leader on the shift to value-based care, Jeff prepares clients by helping them understand the implications of both macro- and microlevel emerging trends impacting health care. He plays a key role in the development of Sg2 Intelligence resources and educational offerings and is a frequent presenter and...

Joshua Aaker, PhD Director

As a member of Sg2’s Intelligence team, Josh contributes to the development of cardiovascular intelligence by evaluating the impact of emerging trends and technologies on care delivery. He helps develop Sg2’s cardiovascular offerings, including publications, educational events and analytical tools. He also is active in working with Sg2’s life science...

Tawnya Bosko, DHA Senior Principal

Drawing upon 20 years of experience in health care management and strategy, Tawnya collaborates with health systems and payers to develop innovative and detailed plans for future growth. She has advised clients on strategies for mergers/acquisitions and the development of clinically integrated networks, strategies for provider-owned health plans, and overall...

Amy Brouhle

Amy Brouhle Vice President, Business Development

As a vice president of business development, Amy is responsible for new business growth focused on the supplier segment of the market, including pharmaceutical, medical device and life science companies. Prior to joining Sg2, Amy worked with Press Ganey Associates Inc as vice president of ambulatory services, where she guided...

Charlotte Brown-Zalewa

Charlotte Brown-Zalewa Associate Principal

As an associate principal on Sg2’s Intelligence team, Charlotte draws from long-standing hospital and health system experience to provide members with creative thought leadership and executable solutions for integrated direct-to-consumer and direct-to-physician attraction and retention strategies. Prior to joining Sg2, Charlotte spent 18 years with integrated health systems where she...

Justin Cassidy, PhD Senior Director

As part of Sg2’s Intelligence team, Justin takes a collaborative and data-driven approach to focus on complex care delivery. His areas of expertise include academic medicine, tertiary care, chronic care, medical utilization, precision medicine and the drivers of health. He tracks the strategic implications of emerging clinical trends and shares...

Trevor DaRin Senior Director

Trevor works directly with boards and leadership teams to facilitate discussions about the top trends in health care and their local impact. He has authored briefings on topics including primary care, workforce planning, Medicare Advantage, disrupters, rural health, and health care strategic planning. He is a member of the Sg2...

David DiLoreto, MD, MBA, FACS

David DiLoreto, MD, MBA, FACS Principal

David DiLoreto is a principal at Sg2 and a physician executive with 2 decades of experience in health system, physician practice and managed care strategy and operations. Prior to Sg2, Dr DiLoreto provided health care consulting and advisory services as senior vice president at GE Healthcare. Additionally, he served as...

Brian Esser

Brian Esser Principal

Brian is an enterprise strategy thought leader overseeing the development of Sg2 intelligence offerings related to federal and state payment and policy dynamics, revenue growth, scale, and the impact of value-based care delivery on health systems and suppliers. He supports health system executives and physician leaders in the development of...

Matt Fadel

Matthew Fadel Associate Principal

As a leader on Sg2’s Consulting team, Matt is focused on physician-hospital alignment, value-based care strategies and strategic planning, both service line–wide and enterprise-wide. He has experience in the design, development and implementation of accountable care organizations, clinically integrated networks (CINs) and comanagement agreements.    Prior to Sg2, Matt served as senior manager within the National Strategy Practice of...