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Our Leadership

Steve Burriss

President

Steve Burriss serves as President of UNC REX Healthcare, an affiliate of UNC Health Care. From April 2012 to April 2015 he served as the chief operating officer at UNC REX, and oversaw all operations at the 660-bed organization, at six locations in Wake County, with more than 5,400 co-workers.

Prior to his role as COO, Steve served as senior vice president of operations and ambulatory services, managing a variety of areas, including UNC REX Cancer Center, heart and vascular services, physician services and ambulatory services. Under Steve's leadership, UNC REX added three new health campuses, two joint ventured surgery centers and more than 150 physicians.

Steve joined UNC REX Healthcare in 1998 as director of human resources and was later promoted to vice president of human resources. Steve was named a “COO to know” by Becker’s Hospital Review in 2013 and received recognition from the Triangle Business Journal as “40 Under 40.” During his tenure, UNC REX was highlighted as one of the Top 50 Hospitals in the U.S. by Becker’s Hospital Review. In 2017, Steve was also named one of the Top 100 CEO’s to Know by Becker’s.

Steve takes an active role in the Triangle community. He has served on the executive leadership team for the American Heart Association, the board for the Leukemia and Lymphoma Society, the executive leadership committee for Light the Night Walk, the board of directors for the Cary Chamber of Commerce and the Health Care Works Coalition. He served as the 2015 March of Dimes’ Triangle March for Babies Chairman.

Steve earned a Bachelor of Science degree in Business and an MBA from Marshall University.

Tate Bombard

Vice President of Legal Affairs
Tate oversees all internal and external legal functions at UNC REX Healthcare. Prior to this role, Tate served as the Executive Director of Physician Administration and Associate General Counsel at UNC REX Healthcare. He has been a UNC REX co-worker since 2010.

He currently serves on the Magellan Charter School Board of Directors, and is a Fellow in the Healthcare Roundtable for General Counsel. Tate received both his Juris Doctor and Bachelor of Science degree from the University of South Carolina.

Tate enjoys golf, travel, hiking and snow skiing.

Linda Butler, MD

Vice President of Medical Affairs/Chief Medical Officer/Chief Medical Information Officer

Linda is responsible for the UNC REX medical staff, quality programs and regulatory compliance. She was a pediatrician in Wake County for more than 13 years before joining UNC REX as chief medical officer in 2009.

Linda serves as a John Rex Endowment Board Member and Finance Committee Member. She is also on the boards of Raleigh Bicycle/Pedestrian Advisory Commission and Capital Care Collaborative. In 2012, she participated in Leadership NC as a member of class class XIX and was named to the Top 100 CMO’s to Know by Becker’s twice in 2013 and 2014. UNC REX CMO Linda Butler named "100 Hospital and Health System CMOs to Know," by Becker’s Hospital Review in 2013 and 2014.

She earned degrees in Nuclear Engineering from N.C. State University and University of Florida, and received her medical training at UNC Chapel Hill.

Linda enjoys cycling, traveling and cooking.

Sylvia Hackett, SPHR

Vice President, REX Healthcare Foundation

Sylvia oversees human resources, volunteer services and fundraising efforts for UNC REX Healthcare. She joined UNC REX in 1999.

Sylvia received a bachelor's degree in Business Administration from N.C. Wesleyan College and a Master's degree in Organizational Leadership and Change from Pfeiffer University.

Sylvia enjoys spending time with her family. A music lover, she plays keyboards and is now expanding her musical horizons by learning to play the guitar.

Chad T. Lefteris

Vice President of Operations

Chad is responsible for construction and design, real estate portfolio, facilities, culinary services, environmental services, ambulance transport, security, customer service, operational improvement, and the oncology service line. He joined the organization in 2007.

He is involved in the Greater Raleigh Chamber of Commerce, is a board member for the North Carolina Chapter of the Leukemia & Lymphoma Society, serves on the City of Raleigh's Unified Development Ordinance Advisory Group, is a founding board member for the Blue Ridge Corridor Alliance, and is a Fellow in the American College of Health Care Executives.

Chad received his bachelor's degree in business administration/health care management from Appalachian State University, and his Masters of Health Administration from Medical University of South Carolina.

Chad enjoys mountain biking, snow skiing, hiking, golf, and tennis.

Joel Ray, MSN, RN, NE-BC

Vice President of Patient Care Services/Chief Nursing Officer

Joel received his BSN from Arkansas State University and MSN in Adult-Health Nursing from Arizona State University. He served in U.S. Air Force Medical Service for 26 years before retiring as Colonel in 2008 and then served as the Director of Surgery Services at UNC Hospitals for five years.

Joel is a member of the American Organization of Nurse Executives and a published contributor to nursing journals. He currently serves on the Board of the Alice Aycock Poe Center for Education and was honored with the Faye L. Miller Distinguished Service Award in 2017.

Joel enjoys music, travel, cooking and spending time with family and friends.

Bob Ricker, RRT, MBA

Vice President, Physician Services

Bob Ricker is the Vice President of Physician Services at UNC REX Prior to this role, Bob served as the Executive Director of Operations with UNC Physicians Network and the Associate Vice President of Suburban Services at UNC REX. He has been a UNC REX co-worker since 1991 and currently serves on the Board of the Wake County Medical Society Community Health Foundation Board Treasurer and on the Board of UNC Physicians Network.

Bob received his Masters of Business Administration from Pfeiffer University in 2000, and his Bachelors of Science Degree from Greensboro College. He is a Registered Respiratory Therapist, and past NC Society for Respiratory Care President & National Delegate to the American Association of Respiratory Care. Bob served in the Marine Corps from 1976-1980. He actively serves on the Board of Directors for the Community Care of North Carolina.

Kirsten Riggs

Vice President, Heart & Vascular Services

Kirsten is responsible for the oversight, management, and strategic planning of the UNC REX Heart & Vascular division. Kirsten joined UNC REX in 1998 and has held prior leadership roles in surgical services and ambulatory administration.

Kirsten serves on the Alliance Medical Ministry Board and the North Carolina Heart & Vascular Research Board. She has a Bachelor of Science in Nursing from East Carolina University and an MHA from Pfeiffer University.

Kirsten enjoys reading, interior design, and spending time with her family.

Lisa Schiller

Chief Communications and Marketing Officer, UNC Health Care and UNC School of Medicine

Lisa leads communication and marketing for UNC Health Care and the UNC School of Medicine. She joined the health care system in 2006.

She serves on the Greater Raleigh Chamber of Commerce's Government Affairs and Inter-city committees, Raleigh Professional Women's Forum, Holt Brothers Foundation Board of Directors, Society for Healthcare Strategy & Market Development (SHSMD) Board of Directors, Healthcare Executive Forum, and is an honorary member of Alpha Kappa Psi – Eta Omega Chapter. Lisa received her bachelor's degree in communication from James Madison University.

Lisa enjoys spending time with her daughters, husband, and Goldendoodles. She also likes golfing, cooking, and attending sporting events and concerts.

Tammie Stanton, RN

Vice President of Post Acute Services for the UNC Health Care System

Tammie is responsible for the leadership and strategic planning for Home Health, Hospice, Inpatient and Outpatient Rehabilitation, and Skilled Nursing Facilities. Tammie also oversees the WakeBrook Mental Health Center in Wake County, and serves on the Wake County Mental Health Stakeholders Committee and the Crisis Cooperative Team.

She is on the UNC School of Medicine’s Innovations Committee, the N.C. Telehealth Task Force and the Geriatrics Advisory/Executive Board for UNC Department of Medicine. Tammie is also on the Board of Directors of Alliance Medical Ministry in Raleigh and the Charles House in Chapel Hill.

Outside of work, Tammie loves spending time with her family, doing yard work and learning to play golf.

Sean Tehrani, MD

Vice President, Regional Hospitalist Services

Sean oversees the Hospitalist programs at UNC REX and Johnston Health’s hospitals in Smithfield and Clayton. He joined UNC REX as Medical Director of the Hospitalist Team at UNC REX in 1999. 

He graduated cum laude from the University of California, Irvine. Sean completed his medical education and residency in Internal Medicine at George Washington University Medical Center.

Sean lives in Raleigh with his wife and two daughters. He plays tennis, soccer and the piano in his free time.

Tom Williams

Vice President, Ambulatory Services

Tommy is responsible for the strategic planning, development and operations of the UNC REX suburban facilities. He joined UNC REX in 2000.

He currently serves on the Transitions LifeCare, Founded as Hospice of Wake County, Board of Directors and also serves as treasurer of Prevention Partners Board of Directors

Tommy earned his bachelor's degree in business administration from N.C. Wesleyan College and his Master's in Health Administration from Pfeiffer University.

Tommy enjoys spending time with his wife and two children.

Andy Zukowski

Chief Financial Officer, UNC REX Healthcare

Andy joined UNC REX Healthcare as chief financial officer in August 2016. Prior to joining the executive team at UNC REX, Andy served as senior finance executive at the University of Michigan Health System. He oversaw all financial aspects of the Hospitals and Health Centers division, with a $2.5 billion operating budget.

Andy was an accounting major at the University of Toledo and earned his bachelor’s degree in Business Administration. Andy also earned a master’s degree in Business Administration from Eastern Michigan University.

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