Chris Mowan, MBA, FACHE

President and Chief Executive Officer

Chris Mowan joined Medical City Dallas as President and Chief Executive Officer in July 2016. Previously, Chris served three years as CEO of MountainView Hospital, a complex teaching hospital in Las Vegas, Nevada. During his tenure at MountainView, he oversaw a $90 million facility expansion, achieved unprecedented ER growth and launched graduate medical education programs.

Chris’ career with HCA spans more than 20 years, starting with roots as a Medical City Healthcare division manager to roles as COO at Del Sol Medical Center in El Paso and as COO at Sunrise Medical Center and Children’s Hospital in Las Vegas, which was ranked as the #1 facility in Nevada by U.S. News & World Report under his leadership.

Chris is a graduate of Indiana University and holds a Master of Business Administration from Southern Methodist University. He is a Fellow of the American College of Healthcare Executives. Chris lives in Dallas with his wife, Natalie, and two daughters, Chloe and Ashley.

Joyce Soule, DNP, RN, NEA-BC, CNOR

Chief Nursing Officer, Medical City Dallas

Joyce Soule, DNP, RN, NEA-BC, CNOR, joined Medical City Dallas as Chief Nursing Officer in August 2017 with more than 20 years of nursing experience.

Prior to joining Medical City Dallas she served as Chief Nursing Officer at Wesley Medical Center in Wichita, Kansas, where she also oversaw Wesley Woodlawn, a community hospital, two off-campus emergency departments and hospital-based clinics. Joyce improved patient satisfaction scores, along with reducing-sepsis during her tenure with the organization.

Previously, she was Vice President of Surgical Services at Medical City Dallas and served in director positions at Medical City Arlington and Texas Health Harris Methodist Hurst-Euless-Bedford Hospital.

Joyce earned a Master of Science in Nursing Healthcare Administration and a Bachelor in Nursing from Graceland University in Independence, Missouri. She recently completed her Doctor of Nursing Practice (DNP) degree. She is a certified perioperative nurse and holds an advanced nursing executive board certification.

Joyce resides with her husband, Greg. They have four adult daughters, three off whom live in the DFW area. Joyce and Greg have four granddaughters and two grandsons, all whom reside in the DFW area. When not at work, she enjoys spending time with family and friends.

John Lazenby, MD

Chief Medical Officer

John Lazenby, MD, was named Chief Medical Officer of Medical City Dallas, Medical City Children’s Hospital, Medical City Women’s Hospital, Medical City Heart Hospital and Medical City Spine Hospital in June 2020.

He previously served as CMO of Memorial Hospital in Jacksonville, Florida. During his tenure, he provided leadership to the medical staff and oversaw several quality, clinical performance and service initiatives throughout the hospital.

Prior to joining HCA Healthcare, Dr. Lazenby spent five years at University of Alabama Birmingham Hospital where he served as Assistant Chief Medical Officer and Associate Professor of Medicine. Prior to joining the team at UAB, he spent 12 years in private practice in both Arkansas and Georgia.

Dr. Lazenby is board Certified in Pulmonary Disease and Critical Care Medicine. He earned his medical degree from the University of Arkansas and a Master of Business Administration from Auburn University. He has served as the Chief Executive Officer of his medical practice as well as the Chief Medical Information Officer of an acute care medical and surgical hospital. He is also a Fellow of the American College of Chest Physicians as well as a member of the American Association for Physician Leadership.

Andrea Daniels, RN, MSN

Chief Operating Officer

Andrea Daniels, RN, MSN, was named chief operating officer for Medical City Heart Hospital and Medical City Spine Hospital in December 2021. Daniels previously served as Medical City Healthcare’s division vice president of cardiovascular, brain and spine services since 2015.

Daniels helped to open the premier cardiac and spine care destination hospitals in 2019. She successfully launched a specialty physician governance structure for heart, brain and spine services that has been used as an HCA Healthcare best practice. She also helped build advanced life-support ECMO program, expanding the reach of this critical heart/lung bypass service regionally.

Prior to her roles within Medical City Healthcare, Daniels served for four years as executive director of cardiovascular services at Indiana University Health System (IU). Previous to that role, she served as director of cardiovascular services at Indiana University Health Goshen.

Daniels earned a Bachelor of Science in Nursing from Indiana University and a Master of Science in Nursing Administration from Ball State University. She also earned a Harvard Business School certificate for Healthcare Management.

Scott Anderton

Chief Financial Officer

Scott Anderton joined Medical City Dallas as chief financial officer in April 2022. In this role, Anderton oversees finance and accounting functions for Medical City Dallas, Medical City Children's Hospital, Medical City Women's Hospital Dallas, Medical City Heart Hospital and Medical City Spine Hospital.

Previously, Anderton served as CFO of HCA Healthcare's Doctors Hospital in Augusta, Georgia, since July 2020. He joined HCA Healthcare in 2010 as a staff auditor in the Internal Audit department moving into the hospital setting in 2016 as an assistant chief financial officer at HCA Healthcare's CJW Medical Center in Richmond, Virginia. In 2018, Anderton was promoted to chief financial officer of HCA Healthcare's Coliseum Health System, a 413 bed, multi-campus health system in Macon, Georgia.

Anderton holds a Master of Accountancy and a Bachelor of Science in Accounting from the University of Alabama.

Mary Beth Short

Vice President of Human Resources

Mary Beth Short was named Vice President of Human Resources at Medical City Dallas, Medical City Children’s Hospital, Medical City Women’s Hospital Dallas, Medical City Heart Hospital and Medical City Spine Hospital in July 2021. She brings more than 20 years of human resources experience, including more than 16 years in healthcare human resources to her position.

Mary Beth previously served as Vice President of Human Resources at Medical City Arlington, Medical City Alliance and Medical City North Hills. Prior to joining Medical City Healthcare, Mary Beth held human resources leadership positions at Medsynergies, Texas Health and Baylor Health Care System.

Mary Beth is a Navy veteran. She earned a Bachelor of Science in Business Studies, Human Resources Management from New Hampshire College and a Master of Business Administration from Texas Woman’s University.

Fausto Devecchi, MD

Assistant Chief Medical Officer of Medical City Dallas, Medical City Children’s Hospital, Medical City Women’s Hospital, Medical City Heart Hospital and Medical City Spine Hospital

Fausto Devecchi, MD, joined HCA two years ago as Physician Advisor and Physician Leader at West Florida Hospital (Pensacola, FL) where he was responsible for quality, accreditation, utilization, patient safety, coding, health Information management, revenue cycle and the development of clinical services.

He is board certified in cardiovascular diseases and clinical cardiac electrophysiology. He earned a master’s degree in business administration from Isenberg School of Management (UMass), and has certifications in Lean Six Sigma (American Society of Quality), Health Care Quality and Management (ABQARP) and Business Intelligence (HFMA). Devecchi is a Certified Physician Executive (AAPL) and he carries a specialization in Advanced Business Analytics (University of Colorado).

Dr. Devecchi graduated with honors in Medicine and Surgery at the University of Turin Medical School in Italy. He specialized in Internal Medicine at Roger Williams Medical Center at Boston University where he served as Chief Resident. While serving as Chief Fellow at the University of Iowa Hospitals and Clinics he specialized in Cardiovascular Disease. Lastly, he specialized in Cardiac Electrophysiology at Brown University. Prior to Joining HCA he spent 12 years in private practice in both Wisconsin and Indiana.

Dr. Devecchi is an active member of several societies including the American College of Healthcare Executives, the Healthcare Financial Management Association, the American Association for Physician Leadership, the American Board of Quality Assurance and Utilization Review Physicians, and the American College of Physicians.

Neyaz Mohammadi

Assistant Administrator

Neyaz Mohammadi is the assistant administrator at Medical City Dallas since December 2021.

Previously, she served as a Medical City Healthcare administrative resident since January 2021. During her tenure, she has played an integral part in the analysis and execution of several significant facility and division-wide initiatives and gained valuable experience with strategy, operations, data analytics and business development at Medical City Plano, Medical City Arlington, Medical City Dallas, and the Medical City Healthcare Division Office.

Neyaz holds a Master of Science in Health Care Administration from Trinity University. In addition, she holds a Master of Science in Medical Sciences from University of North Texas Health Science Center and a Bachelor of Science in Neuroscience from Trinity University.