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.


Michael A Humphrey

Michael A Humphrey National Vice President Intelligence

As national vice president for intelligence, Michael leads Sg2’s business segment and intelligence practice responsible for supporting academic medical centers (AMCs), academic health systems and children’s hospitals. He also focuses on advancing thought leadership for these member segments through collaboration with Vizient Member Networks and other Vizient experts, with a...

Madeleine McDowell, MD, FAAP

Madeleine McDowell, MD Senior Principal

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...

Catherine Maji Vice President

Catherine provides operations oversight and talent management development for the Sg2 Intelligence team, leveraging more than 20 years of health care and professional service experience. Previously, Catherine led consulting engagements as well as thought development for strategic topics, including ambulatory strategy and facilities planning. Prior to joining Sg2, Catherine led...

Joshua Aaker, PhD Senior 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...

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...

Justin Cassidy, PhD Senior Director

Justin engages health system leaders with thought leadership that is grounded in data. He is a frequent speaker at health system retreats, industry conferences, board meetings and Sg2/Vizient events. Justin serves as a trusted adviser to strategy leaders at over a third of the nation’s hospitals, including more than 70...

Trevor DaRin Associate Principal

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...

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 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...

Rhae Ana Gamber Senior Director

As part of Sg2’s Intelligence team, Rhae leads the delivery of content and thought leadership for women’s health and pediatrics, including children’s hospital enterprise strategy. She works closely with members to provide comprehensive research and analytics-driven strategic insights, leveraging her special interest and clinical experience in maternal-fetal medicine and pediatrics...

Chad Giese Principal

Building on his longtime cardiovascular service line leadership at Sg2, Chad now leads the Service Line Practice within Sg2’s Intelligence group. He helps advance the thought leadership across Sg2’s service line teams to ensure members have the strategic insights to navigate the current landscape and the future projections to set...