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Executive Leadership

Mark Nantz, MHA

President and Chief Executive Officer, Valley Health

Photo of Mark NantzMark Nantz is president and chief executive officer of Valley Health System, a not-for-profit network of hospitals, services and providers based in Winchester, Virginia.

Prior to joining Valley Health, Nantz served in executive roles with Bon Secours Mercy Health, including most recently as chief administrative officer and Atlantic Group President; before then, he was executive vice president and chief strategy officer at Bon Secours. He has also held executive positions at Carolinas Healthcare System (now Atrium Health) and Carolinas Medical Center ‐ NorthEast, and leadership roles in the audit practice of a Big 5 accounting firm. He is a Certified Public Accountant and a fellow in the American College of Healthcare Executives.

Nantz is a visionary executive with a record of improving patient satisfaction, quality metrics, and physician and employee engagement. During his 30-plus year tenure in health care, his professional accomplishments include building advanced clinical programs and successful physician and community partnerships, and instituting organizational effectiveness and strategic business plans at the local, regional, and system levels.

Nantz earned a Master of Health Administration from Pfieffer University, and a Bachelor of Science in Accounting from the University of North Carolina ‐ Charlotte. An engaged community leader, he has volunteered in leadership roles with numerous non‐profit and civic organizations, including chambers of commerce, the American Heart Association, the March of Dimes, and organizations supporting the fine arts. He and his wife, Courtenay, reside in Winchester.

  • Bob Amos
    Bob Amos, MBA Chief Financial Officer, Valley Health View Profile
  • Mark Baker
    Mark Baker Vice President, Facilities, Safety and Supply Chain View Profile
  • Barbara Ballard
    Barbara Ballard, MBA Chief Information Officer, Valley Health View Profile
  • N. Travis Clark
    N. Travis Clark, MOL Vice President, Operations, Shenandoah Memorial Hospital and Page Memorial Hospital View Profile
  • Carmen Clipper
    Carmen Clipper Vice President, Planning and Growth View Profile
  • Jennifer Coello
    Jennifer Coello, MHA Vice President, Operations and Administrator, Warren Memorial Hospital View Profile
  • Carla Dallmann
    Carla Dallmann, BSN, MBA, MJ, CPHRM, CPCO Vice President, Risk Management, Valley Health View Profile
  • Jeffrey Feit
    Jeffery Feit, MD, MS Chief Population and Community Health Officer, Chief Medical Information Officer View Profile
  • James Freilich
    James Freilich, MD Vice President of Medical Affairs, Warren Memorial Hospital View Profile
  • Kenneth Janowski
    Kenneth Janowski, DO, CPE Vice President of Medical Affairs, Winchester Medical Center View Profile
  • Kenneth Janowski
    Sherif Kaiser, MD, MPH Vice President, Medical Affairs, Hampshire Memorial Hospital and War Memorial Hospital View Profile
  • Susan Lessar, MS, RDN, CNSC
    Susan Lessar, MS, RDN, CNSC Vice President, Operations, Service Excellence View Profile
  • Christine Lowman
    Christine Lowman, CPA, CHFP Vice President Finance and Corporate Controller, Valley Health View Profile
  • Jake Meza
    Jake Meza, MBA Vice President, Operations, Ambulatory, Post-Acute and Community Services View Profile
  • Julie Miksit
    Julie Miksit, RN, BSN, MBA Vice President of Operations and Service Lines, Winchester Medical Center View Profile
  • Nicolas C. Restrepo
    Nicolas C. Restrepo, MD Valley Health Chief Quality and Patient Safety Officer View Profile
  • Brad Rogers
    Brad Rogers, MHA Chief Operating Officer, Valley Health Medical Group, and Vice President, Valley Physician Enterprise View Profile
  • Chris Rucker
    Chris Rucker, MHA Chief Strategy Officer and Chief of Staff, Valley Health View Profile
  • Iyad Sabbagh
    Iyad Sabbagh, MD, MBA Chief Physician Executive and President, Valley Physician Enterprise View Profile
  • Elizabeth Savage
    Elizabeth Savage, MSOD Chief Human Resources Officer, Valley Health View Profile
  • Kevin Sheppard
    Kevin Sheppard, MHA Vice President of Operations-Clinical Services, Winchester Medical Center and Valley Health View Profile
  • Heather Sigel
    Heather Sigel, MBA Vice President, Operations Hampshire Memorial Hospital and War Memorial Hospital View Profile
  • Tonya Smith
    Tonya Smith, MHA Senior Vice President, Acute Care, President, Winchester Medical Center View Profile
  • Theresa L. Trivette
    Theresa L. Trivette, DNP Chief Nursing Executive (CNE), Valley Health View Profile
  • William "John" Zehner
    William "John" Zehner, MD Vice President, Medical Affairs, Page Memorial Hospital and Shenandoah Memorial Hospital View Profile

Valley Health System Board of Trustees

  • Harry Smith – Chair
  • Thomas T. Gilpin – Vice Chair
  • Melody Eaton, PhD, MBA, RN, CNE, FAAN – Secretary
  • Jason Aikens
  • Daniel V. Alexander, DO, FHRS, FACC
  • Jeff Boehm
  • Steve Cluss
  • Julia M. Connell
  • Chad Dansie, MD
  • Dottie Day
  • Marie Imoh
  • Katherine Johnson, MD
  • Tom Leslie, DDS
  • Mark Nantz, MHA, President and CEO
  • Mary Beth Price
  • Clifton L. “Kip” Rutherford
  • Gerald "J.J" Smith
  • Thomas Wise, MD