PHMO Leadership

Mary Schilder, RN

Senior Director, Analytics Customer Solutions

Ms. Schilder serves as senior director, analytics customer solutions, for Duke Health. Upon earning her B.S. in nursing from East Carolina University, Ms. Schilder specialized in providing healthcare to women.  After completing her MA in Instructional Technology at North Carolina Central University, Mary started her journey in healthcare analytics and clinical informatics.  Before joining Duke in 2016, Ms. Schilder was with WakeMed, where she helped develop the Ongoing Performance Evaluation Program (OPPE), led efforts to implement WakeMed’s first data warehouse and launched a dedicated Clinical IT Service Desk.  Ms. Schilder was involved with WakeMed’s Epic implementation and had responsibility for developing and delivering WakeMed’s Epic training program as well as data warehousing and information delivery following go live.

Atalaysha Churchwell, PhD, LCMHC, LCAS, NCC, CCM

Director, DukeWELL Care Management

Ms. Churchwell serves as director of DukeWELL Care Management for PHMO's care management program. She is a fully licensed as a professional counselor and clinical addiction specialist with 14 years of administrative and clinical experience working with children and adults of varying backgrounds who suffer from chronic health concerns. Ms. Churchwell’s work supporting and advocating for underserved communities locally and internationally are a driving force professionally and personally. Ms. Churchwell is a graduate of Middle Tennessee State and Tennessee State Universities. She completed her doctorate in the counseling and counselor education program at North Carolina State University, where she researched patient perceptions of trust and trust development in patient-provider relationships within primary care clinics that serve marginalized populations. She was recently awarded a Counseling Fellowship from NBCC and Affiliates.

Daniel Costello, MPA

Chief Operating Officer

Mr. Costello serves as COO for Duke PHMO. Previously, he was program examiner at the Office of Management of Budget in Washington, D.C., where he was responsible for creating and implementing federal budgets and policies. Mr. Costello also served as a Presidential Management Fellow in Washington, D.C. and a United States Peace Corps Volunteer in Guatemala. He graduated from Boston University and received his MPA from Columbia University’s School of International and Public Affairs.

Fred Johnson, MBA

Director, Medicaid Accounts

Mr. Johnson is the network director for Northern Piedmont Community Care, a role in which he oversees five primary care clinics and two care management programs serving 80,000 vulnerable patients across six North Carolina counties. He is also assistant professor, Duke Department of Community & Family Medicine and vice chief, Division of Community Health. Mr. Johnson earned his Bachelor of Arts degree from Loyola University in Baltimore and a Master of Business Administration from Wake Forest University. Over a forty year span, he has had several careers involving a diverse line of services, populations and customers ranging from organizing local and national consumer movements to initiating and managing long-term care and health care services and community and economic development organizations. In 2003, Mr. Johnson joined Duke’s Division of Community Health as deputy director and director of clinical and care management service. Prior to joining Duke, Mr. Johnson served as vice president of Resources for Seniors Inc. (RFS), a Raleigh, North Carolina corporation. During his ten years with RFS, he developed and managed adult day centers, senior centers, case management, in-home care programs and allied health services serving a thousand customers per day. 

Michelle Lyn, MBA, MHA

Lead, Community Initiatives & Strategy

Ms. Lyn is the Duke Population Health Management Office’s lead for community initiatives and strategy. She also serves as chief of the Duke Division of Community Health in the Department of Community & Family Medicine, co- director of the Duke Center for Community and Population Health Improvement and leadership faculty for the Duke-Johnson & Johnson Nurse Leadership Program. Ms. Lyn began her Duke career in 1998, as a founding member of the Division of Community Health and was instrumental in designing and launching more than 40 of the division’s collaborative, community-based clinical, care management, educational and research initiatives. Ms. Lyn’s contributions span the division’s clinical programs, including neighborhood clinics; school-based health centers; and the Just for Us Program, which cares for chronically ill homebound seniors in their homes. She is also instrumental to the Division’s care management services, which include a North Carolina Community Care Network covering six North Carolina counties, linking more than 50 primary care practices, four hospital systems, and local departments of social services, health and mental health. In addition, Ms. Lyn served as the founding Program Director for Duke’s Master of Health Sciences in Clinical Leadership, the Community Health Leadership Program, the Community Health Fellowship; and Course Director for the Community Health Elective in the School of Medicine.

Devdutta Sangvai, MD, MBA

Vice President for Population Health Management, Duke Health

Dr. Sangvai is the Duke Population Health Management Office Lead, associate chief medical officer (ACMO) for Duke University Health System, executive director of Duke Connected Care and assistant professor of family medicine, pediatrics & psychiatry for Duke University Medical Center. Dr. Sangvai also serves as the associate program director for the Management and Leadership Pathway for Residents (MLPR)—an innovative residency training program at Duke designed to develop future physician executives. Originally from Ohio, Dr. Sangvai has been at Duke since 2003 and has previously served as Duke’s chief of family medicine.

In addition to his work at Duke, Dr. Sangvai is significantly involved in leadership and organized medicine both locally and nationally. He was part of the inaugural class of Presidential Leadership Scholars, has served as president of the North Carolina Medical Society (NCMS), and is a 2004 graduate of the NCMS Leadership College. He completed a 3-year term as the chair of the young physicians section of the American Medical Association (AMA). Dr. Sangvai has also served as the national chair for the Association of American Medical Colleges (AAMC) organization of student representatives and organization of residents.

Dr. Sangvai graduated from the Ohio State University and received his M.D. from the Medical College of Ohio, where he also completed his family medicine and chief residencies. He earned his M.B.A. from the Duke University Fuqua School of Business. Dr. Sangvai is a certified physician executive with the American College of Physician Executives (ACPE) and fellow of the American Academy of Family Physicians (AAFP).