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Medical City Dallas

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Division Leadership

Erol R. Akdamar, FACHE


Akdamar began his career with HCA as an administrative resident in 1993. Since that time he has become known for his exceptional leadership and growth initiatives in the hospitals he has served from Louisiana to Georgia and Texas. His mantra of “excellence always” has resulted in exceptional employee engagement, outstanding quality, and earnings performance.

Medical City Healthcare is distinguished as the first regional brain attack network in the United States, with four comprehensive stroke centers, and six primary stroke centers geographically positioned to provide rapid access to high quality stroke care across the region. Five Medical City Healthcare hospitals hold the prestigious Magnet Recognized® status from the American Nurses Association — a designation of quality achieved only by the top 5 percent of hospitals nationwide. Eight Medical City Healthcare hospitals are on The Joint Commission’s 2014 list of Top Performers on Key Quality Measures™.

Akdamar is a graduate of Louisiana State University in Baton Rouge, Louisiana and received his Master of Health Care Administration from Tulane University School of Public Health and Tropical Medicine in New Orleans. He was recognized by Modern Healthcare as a 2006 "Up & Comer" for management in the healthcare industry. He is a Fellow with the American College of Healthcare Executives and currently serves on the Council on Policy Development of the Texas Hospital Association and as a member of the Regional Policy Board of the American Hospital Association.

M. Wayne Martin, CPA

Chief Financial Officer

Martin’s financial expertise serves one of the largest divisions in the HCA portfolio. He began at HCA in October 2013, the same day Erol Akdamar assumed his role as division president.

Prior to joining Medical City Healthcare, Martin worked at the Methodist Healthcare System, an HCA Joint Venture for 15 years most recently serving as the CFO for Methodist Hospital and Methodist Children’s Hospital. During his tenure, the system experienced phenomenal growth and expansion and Martin was instrumental in improving earnings growth, productivity, and overall performance. Prior to that tenure in San Antonio, Martin worked in HCA’s Internal Audit Department in Nashville after serving 5 years in public accounting firms in Memphis, TN and Nashville, TN.

Martin is an honors graduate of Memphis State University in Memphis, Tennessee.

Scott Robins, MD

Chief Medical Officer

Dr. Robins was named to his current position in March 2011. He brings extensive medical and leadership experience to his role serving Medical City Healthcare. His focus is to ensure HCA’s outstanding clinical care through the provision of exceptionally effective and compliant quality management programs, including patient and employee safety initiatives.

Prior to joining HCA, Dr. Robins was the chief medical officer for Covenant Health System in Lubbock where he provided oversight for Case Management, Clinical Documentation, Infection Control, and Clinical Affairs. He developed a Clinical Integration model that included more than 250 employed and independent physicians dedicated to improving quality and efficiency. Dr. Robins has also helped to grow a 170-member employed medical group, built a Hospitalist service, and developed an Independent Review Board in support of an emerging cancer research institute. His expertise combines more than 20 years in a physician administrative role and 26 years in the practice of Internal Medicine.

Dr. Robins received his degree from Texas Tech and completed medical school at the University of Texas Medical Branch in Galveston.

Zach Mueller, DNP, RN, NEA-BC

Chief Nursing Executive

Mueller was promoted to chief nursing executive of Medical City Healthcare in May 2017 after serving as senior vice president and chief nursing executive at Medical City Dallas and Medical City Children's Hospital.

Under his leadership, women's services and NICU patient satisfaction scores increased significantly and Medical City Dallas received an unprecedented third Magnet designation for nurseing excellence. As a Registered Nurse, Zach has worked as a clinician in oncology and in the emergency department, and has served in a variety of leadership roles including in director roles over education, pediatrics, and cardiovascular services. Prior to joining Medical City Dallas, Zach served as Associate Chief Nursing Officer at The Medical Center of Aurora in Colorado.

Zach is active in several professional organizations, including the Emergency Nurses Association (ENA), and the American Organization of Nurse Executives (AONE). His career achievements include speaking nationally and internationality on a variety of nursing and healthcare topics, as well as being named a Dallas-Fort Worth Great 100 Nurse in 2014.

Zach holds two doctoral degrees, a Doctor of Nursing Practice and Doctor of Nursing from the University of Colorado, as well as a master’s degree in nursing, and two undergraduate degrees. He is board certified by the American Nurses Credentialing Center as a nursing executive, advanced.

Jamie Youssef

Chief Development and Strategy Officer

Youssef was named to his current position in July 2015 after serving as senior vice president and chief development and operations officer at Medical City Dallas Hospital. He will lead the strategic growth of the division including physician partnerships, service line development, regional outreach, and other efforts to improve health care programs in the communities served by Medical City Healthcare.

He began his career at Medical City Healthcare in 2011 as vice president of neurosciences, orthopedics, oncology, bariatrics, and robotic surgery and was promoted to senior vice president and chief development and operations officer in 2013. Prior to joining HCA, Jamie served as vice president of Integrated Healthcare Strategies, a strategic consulting firm focused on physician development, and as director of operations for OhioHealth.

Youssef holds Bachelor of Science and Master of Healthcare Administration degrees from The Ohio State University.

Leah Miller

Chief Information Officer

As the chief information officer, Miller delivers a wide array of clinical and facility solutions to Medical City Healthcare's physicians, caregivers, hospitals, surgery, oncology, imaging, and free-standing surgery centers spanning Dallas-Fort Worth and surrounding areas. She focuses on deconstructing and solving the most complex organizational challenges to advance HCA’s competitive advantage and technology-enabled, patient-centric business.

Prior to accepting a pivotal HCA executive role in healthcare, Miller garnered a breadth of management experience in and recognition for her distinguished leadership, organizational transformations and solution delivery accomplishments in large-scale healthcare, retail software, government and automotive manufacturing sectors.

Miller earned her Bachelor of Science in Computer Science with Software Engineering from Weber State University and Master of Finance and Accounting from DeVry University. Additionally, she had secured CMMI (Capability Maturity Model Integration) Training, PMP (Project Management Professional), HCA Emerging Leader, and C3 Consulting's Facilitator Training certifications.

James H. Burrell III, MD

Chief Medical Information Officer

Dr. Burrell joined HCA in 2013 and serves the division as chief medical informatics officer, chief medical officer of the employed medical group, and medical director of the developing ACO model. Before that he was the chief medical officer for Cigna HMO in Phoenix, a Level III patient centered medical home with 25 clinics and 200 physicians that operated a 40,000-member Medicare Advantage Plan and a commercial ACO.

Dr. Burrell also served as chief executive officer and chief medical officer of a Catholic hospital network with 22 rural clinics in western Texas after the hospital acquired a professional association of 180-physicians that Dr. Burrell developed upon his retirement from 18 years in clinical practice.

Dr. Burrell was an undergraduate at Texas Tech University, and attended the University of Texas Medical Branch for medical school and Internal Medicine residency.

Mark E. Whitley

Senior Vice President of Planning and Development

Whitley is responsible for strategic planning, business intelligence, acquisitions, and joint ventures for the hospitals and outpatient centers in Medical City Healthcare in Dallas-Fort Worth and Oklahoma City.

He began his career with HCA in 2005 as the vice president of the Outpatient Services Group. In that role, he was responsible for all Medical City Healthcare outpatient development, including acquisitions and the development of new ambulatory surgery centers, imaging centers, and oncology centers. Prior to joining HCA, he worked for nine years as a healthcare management consultant with Arthur Andersen and Ernest & Young and one year at Tenet Health System in outpatient development.

Whitley earned his bachelor’s degree in finance and management from The University of Texas at Austin and his master’s degree in health administration from Trinity University in San Antonio, Texas.