Population Health Administrative Staff

Timothy A. Peterson, MD, MBA, is the ACO Executive of the Physician Organization of Michigan Accountable Care Organization (POMACO) at the University of Michigan Health System. The POMACO project brings providers and hospitals together to coordinate the care for a specific population, while improving quality outcomes and reducing costs. He is responsible for the executive leadership of POMACO; working collaboratively with the Board of Managers to set the clinical strategy and leading the team necessary to implement that strategy across our member institutions spanning the state of Michigan.

Dr. Peterson also serves as the Interim Medical Director for Population Health and Interim Executive Director, Home Care Services; overseeing the strategic redevelopment and management of these business units.

Dr. Peterson is also an Assistant Professor of Emergency Medicine at the University of Michigan Health System. He received his BA in Microbiology with a minor in Management and Organizational Behavior. He then obtained his MD from the University of Cincinnati College of Medicine and completed his Emergency Medicine Residency at the University of Michigan Medical School, where he also served as chief resident. Afterward he studied at the Stephen M. Ross School of Business at the University of Michigan and received a Master’s of Business Administration. While seeing patients in the ambulatory setting, he is also active in teaching medical students, house officers and fellows. His research interests include Healthcare Finance and Operations Management and focuses on reducing costs, increasing quality, and improving the patient experience.

He is active in a multitude of institutional committees and is board certified with the American Board of Emergency Medicine (ABEM). In recognition of his contributions to the field of Emergency Medicine, he was elected to the American College of Emergency Physicians (ACEP) as a fellow and is certified in Lean Health Care through the University of Michigan, Department of Engineering. He was awarded the Golden Apple Award for the most effective clinical educator for the 2010 academic year by the Emergency Medicine Residents. In 2008 he received the Stephen C. Dronan Professionalism Award for demonstrating consistent commitment to the highest standards of the medical profession.

  Timothy Peterson

Patricia Arnett-Anderson is the Senior Administrative Assistant for the Population Health Office. She retired in December 2014 after 35 years of service and joined the Michigan Medicine temp pool in February 2015. Where she accepted a variety of assignments throughout the University. Now as a regular employee again with the Population Health Office. She brings with her a strong knowledge base of University policies and procedures with strong organizational skills. She attended Cleary University and majored in Business Administration. She's currently a member of the University of Michigan Event Planners. She also was the organizer for the University Hospital Department of Discharge Planning vendor fairs. Pat is a lover of the arts, travels and trying new recipes.

  Patricia Arnett-Anderson

Leah Corneail, MPH is a Senior Project Manager in the Population Health Office. In this role, she works on a variety of projects to support Michigan Medicine’s success in new payment and delivery models, such as the State Innovation Model (SIM) and Comprehensive Primary Care Plus (CPC+) initiatives. Leah graduated in 2013 with her Master of Public Health from the George Washington University Milken Institute School of Public Health and received a Bachelor of Arts in French/Pre-Medicine from the University of Michigan. Prior to joining the Population Health Office, she worked as a Senior Program Manager at the Center for Healthcare Research & Transformation.

  Leah Corneail

Kristen Hurst is a Senior Project Manager in the Population Health Office. In this role, she manages a diverse portfolio of projects which includes a focus on transitions of care and advanced care planning. She came to Michigan Medicine from the American Cancer Society, where she was a senior manager in health systems.  She led a team of hospital account managers in executing population health programs and growth strategies with hospital systems in Michigan and previously in Greater Cleveland. Kristen earned her Bachelor’s degree in Zoology from Miami University in Oxford, Ohio. In her spare time, Kristen enjoys running, spending time with her family, and trying new recipes.

  Kristen Hurst

Ezinne Ndukwe, MPH is a Senior Project Manager in the Population Health Office. In this role, she leads a diverse portfolio of projects that aim to reduce inappropriate Emergency Department utilization. Prior to joining the Population Health Office, Ezinne worked as a Senior Health Policy Analyst at the Center for Healthcare Research & Transformation, where she led the development and implementation of grant funded projects and program evaluations focused on health reform, health status improvement and access to health care. Ezinne holds a Master of Public Health in Health Behavior and Health Education from the University of Michigan School of Public Health, and a B.S. in Science-Business from the University of Notre Dame.

  Ezinne Ndukwe

John Tranfaglia is a Program Coordinator in the Population Health Office. In this role, he supports a variety of programs within the department while focusing on the Comprehensive Primary Care Plus (CPC+) initiative. He came to Michigan Medicine from the National Academy for State Health Policy where he evaluated CMS demonstration projects including State Innovation Models (SIM). John earned his Bachelors of Arts in Political Science from American University in Washington, DC. In his spare time, he enjoys running, soccer, and exploring Ann Arbor.

  John Tranfaglia