Vice Presidents

Amanda Billings

Vice President for Development

Amanda Billings

Amanda Billings was named Vice President for Development in November 2014. She leads UT Southwestern Medical Center’s philanthropic strategies, which allow the Medical Center to continue to conduct world-class research, educate tomorrow’s health care leaders, and deliver quality patient care. Previously, Ms. Billings was Interim Vice President for Development and Director of Development Communications at UT Southwestern, where she was highly involved in the Building the Future of Medicine campaign to support the construction of William P. Clements Jr. University Hospital.

Before joining UT Southwestern in 2010, Ms. Billings spent 13 years leading communication and marketing efforts for the American Red Cross, both regionally and nationally.

She holds a bachelor’s degree in political science from Austin College in Sherman, Texas, and has done graduate work in English literature at the University of North Texas.


Will Daniel, M.D.

Vice President and Chief Quality Officer

Will Daniel, M.D.

Holder of the:

  • William T. Solomon Professorship in Clinical Quality Improvement at UT Southwestern Medical Center

Will Daniel, M.D., a leader in driving clinical improvement, quality measures, and measureable outcomes, as well as positive transformational changes, was named Vice President and Chief Quality Officer in November 2016.

Most recently, Dr. Daniel was Vice President and Chief Quality Officer for Saint Luke’s Health System in Kansas City, Missouri, a 10-hospital system that has won national recognition for quality.

He received his undergraduate degree from Princeton University, then earned his M.D. at UT Southwestern Medical School in 1990. After completing his residency at Washington University/Barnes Hospital in St. Louis, he returned to UT Southwestern for a cardiology fellowship. He also completed an advanced cardiovascular interventional fellowship at Saint Luke’s Mid America Heart Institute. Dr. Daniel served as a Clinical Professor of Medicine at the University of Missouri in Kansas City and as the Medical Director for Quality for the Mid America Heart Institute.


Ruben E. Esquivel

Vice President for Community and Corporate Relations

Ruben E. Esquivel

Vice President for Community and Corporate Relations of UT Southwestern Medical Center since 1995, Ruben E. Esquivel began his career as an assembler with AVO International Inc. While working, he attended college at night to earn a degree in electrical engineering from the New Jersey Institute of Technology. His work at AVO culminated in being named President and CEO of the company in 1985 and Vice Chairman in 1994.

Mr. Esquivel has served as Chairman of the Board of Managers of the Dallas County Hospital District (dba Parkland Health & Hospital System) and Chairman of the Board of Directors of the Dallas-Fort Worth Hospital Council Foundation. He currently serves on several local boards, including the Dallas Zoological Society, State Fair of Texas, Stemmons Corridor Business Association, and the YMCA of Metropolitan Dallas.


Juan M. Guerra Jr., M.B.A.

Vice President for Facilities Management

Juan M. Guerra, Jr.

Juan M. Guerra Jr., M.B.A., joined UT Southwestern Medical Center in February 2016 as Vice President for Facilities Management. He oversees facilities planning, design, construction, repairs, maintenance and operations for the multicampus Medical Center, consisting of 12.7 million square feet. He has more than 30 years of experience in facilities management, both in operations and capital programs.

Prior to joining UT Southwestern, Mr. Guerra served as Associate Vice President for Facilities at Texas State University for seven years and was responsible for a portfolio of 8 million square feet of campus facilities, 250 buildings, and more than $1.3 billion in capital improvements. He spent 20 years in the Civil Engineer Corps and served in the U.S. Navy from 1983 to 2003, overseeing maintenance and operations on military installations. A Registered Professional Engineer in Texas and California, he is a member of numerous state and national professional associations.

He holds a bachelor’s degree in engineering from Stanford University and two master’s degrees – in civil engineering from the University of California, Berkeley, and in business from Webster University.


Angelica Marin Hill, M.B.A.

Vice President for Government Affairs and Policy

Angelica Marin Hill

Angelica Marin Hill became Vice President for Government Affairs and Policy in March 2014. Focusing on analytical approaches to legislative issues and strategic communications, her office is responsible for state and federal appropriations that are crucial to UT Southwestern Medical Center’s advancement as a world-class research institution.

Previously, Ms. Hill was Assistant Vice President for Legislative Budget and Policy at UT Southwestern, where for seven years she was involved in government relations, strategic planning, and legislative analysis. From 2001 to 2004, she served as a senior analyst for the Texas Senate Finance Committee, overseeing appropriations for higher education and health and human services agencies, among others, accounting for more than 70 percent of a $117 billion state budget. She has also worked in private industry, focusing on state and federal policy in health insurance reform.

Ms. Hill has an undergraduate degree in history from Harvard University and a Master of Business Administration from the University of Texas McCombs School of Business.


Christopher Madden, M.D.

Vice President and Chief Operations Officer, UT Southwestern Medical Group, and Professor, Department of Neurological Surgery

Christopher Madden, M.D.

Christopher Madden, M.D., was named Vice President and Chief Operations Officer, UT Southwestern Medical Group in July 2019. He is responsible for the Medical Group’s clinical practice and clinical administrative functions at all sites of service, including UT Southwestern Hospitals and Clinics, Parkland Health & Hospital System, Children’s Health, the Veterans Affairs North Texas Health Care System, and all UTSW clinically affiliated partners.

Dr. Madden guides the overall direction of the Medical Group, including patient care, the development of strategic and marketing priorities, physician contracting, and financial performance. Dr. Madden works with Clinical Department Chairs to ensure that clinical activities at all sites of service are synergistic with UT Southwestern missions and priorities. In addition, Dr. Madden continues to build relationships with our affiliated partner institutions.

He previously served as interim Director of the Peter O’Donnell Brain Institute, as Chief Medical Officer for Parkland Health & Hospital System, and as Associate Vice President for Parkland Affairs.

Dr. Madden completed his residency at Ohio State University and a fellowship in skull base surgery at Addenbrooke’s Hospital in Cambridge, England. He earned his medical degree at the University of Texas Health Science Center in San Antonio.

Becky McCulley, RN, M.S.N.

Vice President, Clinical Programming and Facility Development

Becky McCulley, RN, M.S.N.

Becky McCulley, RN, M.S.N., became Vice President, Clinical Programming and Facility Development in August 2019. She focuses on the planning and development of all Health System clinical facilities. She also leads clinical programming and workforce development efforts to provide a comprehensive range of clinical services that meet the highest standards of clinically excellent, team-based care and service to patients and their families.

Ms. McCulley previously was Associate Vice President and Chief Operations Officer for UT Southwestern University Hospitals, leading the transition from the now-closed St. Paul University Hospital to William P. Clements Jr. University Hospital.

She has held many leadership positions throughout her career at UT Southwestern, including Associate Vice President and Chief Operations Officer for Neurosciences and Emergency Services, Associate Vice President and Chief Operations Officer for Neurosciences and Surgical Services, and Associate Vice President for Clinical Program Development. She served as Vice President, Patient Care Services and Chief Nursing Officer from 1994 until 2005.

Ms. McCulley earned a bachelor of science in health care administration from East Texas State University in Commerce. She then earned a bachelor of science in nursing and a master’s degree in nursing administration, both from the University of Texas at Arlington.


Mack Mitchell, M.D.

Vice President for Medical Affairs and Professor, Department of Internal Medicine

Mack Mitchell, M.D., M.B.A.

Holder of the:

  • Nancy S. and Jeremy L. Halbreich Professorship in Gastroenterology

Mack Mitchell, M.D., a Professor of Internal Medicine, is the UT Southwestern Vice President for Medical Affairs. He is also the Chief Medical Officer for the Southwestern Health Resources Physician Network. Dr. Mitchell’s clinical expertise is in gastroenterology and liver diseases, and his research has been focused on alcoholism.

He earned his medical degree from Johns Hopkins University School of Medicine, where he was elected to Alpha Omega Alpha, and he has been listed repeatedly as one of D Magazine’s Best Doctors in Dallas.

Before coming to UT Southwestern, Dr. Mitchell was the Chief of Gastroenterology and the Medical Director of Ambulatory Services at Johns Hopkins Bayview Medical Center; the Chairman of Internal Medicine at Greater Baltimore Medical Center; and the Chairman of Medicine at Carolinas Medical Center in Charlotte, North Carolina.

He is currently President of ABMRF/The Foundation for Alcohol Research, and was recently honored with the Seixas Award for Distinguished Service by the Research Society on Alcoholism.


Eric Peterson, M.D.

Vice Provost and Senior Associate Dean for Clinical Research, Vice President for Health System Research, and Professor, Internal Medicine

Eric Peterson, M.D.

Holder of the:

  • Adelyn and Edmund M. Hoffman Distinguished Chair in Medical Science

Eric Peterson, M.D., M.P.H., an internationally acclaimed leader in cardiovascular clinical research, joined UT Southwestern Medical Center in November 2020 as the inaugural Vice Provost and Senior Associate Dean for Clinical Research and as Vice President for Health System Research.

Dr. Peterson joined UT Southwestern from Duke University, where he was a distinguished tenured professor in the Division of Cardiology, Department of Medicine from 2006 through October 2020 and where he served as Executive Director of the Duke Clinical Research Institute. At Duke, Dr. Peterson led numerous multicenter clinical trials, prospective registries, and implementation programs.

He currently serves as Principal Investigator of the Analytic Centers for American College of Cardiology’s National Cardiac Database, the American Heart Association’s Get With the Guidelines Database, and the Society of Thoracic Surgeons’ National Cardiac Surgery Database. He also is Principal Investigator of the National Heart, Lung, and Blood Institute’s Spironolactone Initiation Registry Randomized Interventional Trial (SPIRRIT) in Heart Failure with Preserved Ejection Fraction and leads several ongoing industry-sponsored clinical trials, registries, and implementation research studies.

With more than 1,400 peer-reviewed publications to date, Dr. Peterson ranks among the top 1 percent of published researchers in clinical medicine and has been named one of the most highly cited researchers in the world by Thomson Reuters.

Dr. Peterson earned his medical degree from University of Pittsburgh and completed his residency at Brigham and Women’s Hospital. He also completed a fellowship in general internal medicine at Harvard University and a fellowship in cardiology at Duke University.


Russell Poole, M.B.A.

Vice President of Information Resources and Chief Information Officer

Russell Poole

Russell Poole, a veteran technology leader, joined UT Southwestern Medical Center as Chief Information Officer in October 2020. Mr. Poole provides strategic leadership over the University’s information technology and leads the digital transformation that supports the continued growth and success of all of UT Southwestern’s core missions.

Mr. Poole came to UT Southwestern from University of Colorado Anschutz Medical Campus, where he led the University’s overarching technology environment since 2013. That included its network, enterprise applications, data centers, web services, academic and learning management systems, classroom and educational support, information security, compliance, and other critical areas across the campus.

In his role as Associate Vice Chancellor for the Office of Information Technology and CIO at Anschutz Medical Campus, he was responsible for the campus’s academic IT infrastructure and coordination of technology services across five affiliate hospitals, which provide clinical care in Denver and throughout Colorado.

Before working at the University of Colorado, he was Director of the Technology Services Organization and Facilities within the College of Computing at the Georgia Institute of Technology.

Mr. Poole holds both a Master of Business Administration and Bachelor of Science in mechanical engineering from the University of Florida.

Natalie Ramello, J.D.

Vice President for Institutional Compliance and Chief Compliance Officer

Natalie Ramello

Natalie Ramello joined UT Southwestern as Vice President for Institutional Compliance and Chief Compliance Officer in September 2019.

Ms. Ramello has more than a decade’s worth of experience as a health care attorney, risk manager, and compliance officer. She received her Bachelor of Arts in psychology with a minor in business from the University of Colorado Boulder; her Juris Doctor from Loyola University Chicago School of Law with a concentration in health law; and her Master of Social Work and Master of Laws (LL.M.) in Health Law from Loyola Chicago. She is pursuing a Master of Health Administration from Ohio University.

Most recently, Ms. Ramello worked as Chief Compliance and Risk Officer at CommunityCare, a health care services company in Oklahoma. Prior to that, she was Regional Director of Compliance, Privacy, and Risk Management at Providence St. Joseph Health/Covenant Health System in Lubbock. She has worked at several law firms and coordinated clinical research program compliance at Bay Area Medical Center in Marinette, Wis., where she served on the Institutional Review Board (IRB). She also taught Health Law and Ethics as an adjunct faculty member at Texas Tech University in Lubbock.


John Douglas Rutherford, M.D.

Vice President for Clinical Operations and Professor, Department of Internal Medicine

John Douglas Rutherford, M.D.

Holder of the:

  • Jonsson-Rogers Chair in Cardiology

John Douglas Rutherford, M.D., serves as Vice President for Clinical Operations at UT Southwestern Medical Center and holds a Chair in Cardiology. He joined the UT Southwestern faculty as Professor of Medicine in 1993 and received the Distinguished Physician Award in recognition of outstanding individual contributions to Parkland Memorial Hospital in 1995 and the Gifted Educator Award from the American College of Cardiology in 2011.

Dr. Rutherford, who earned his medical degree from the University of Otago in his native New Zealand, was the recipient of a traveling research fellowship from the New Zealand National Heart Foundation and was a Research Fellow in Medicine at Harvard Medical School.

Dr. Rutherford was recruited to the Harvard faculty in 1978 as a cardiologist and later was appointed co-director of the Samuel A. Levine Cardiac Unit at Brigham and Women’s Hospital in Boston.


Marcia Schneider, M.B.A.

Vice President, Health System Strategy and Business Development and Chief Strategy Officer

Marcia Schneider

Marcia Schneider rejoined UT Southwestern in February 2019 as Vice President, Health System Strategy and Business Development and Chief Strategy Officer.

A veteran health care system executive, Ms. Schneider directs the strategic planning, business development, and health care delivery system transformation for the UT Southwestern Health System.

Previously, she was Assistant Vice President for Health System Planning and Performance at UT Southwestern, supporting the strategic development of the UT Southwestern-Texas Health Resources collaboration and the resulting Southwestern Health Resources network. She also led the planning and programming for UT Southwestern’s William P. Clements Jr. University Hospital, which opened in December 2014.

Most recently, she was Vice President of Administration at Baylor Scott & White Health, leading operational transformation.

Ms. Schneider holds a Bachelor of Arts in Biology from the University of Texas at Austin and a Master of Business Administration from the University of Texas at El Paso.


Michael Serber, M.B.A.

Vice President, Finance and Institutional CFO

Michael Serber

Michael Serber, M.B.A., has been with UT Southwestern Medical Center since 2003. As Vice President for Finance and Institutional CFO, Mr. Serber is responsible for oversight of all financial activity at UT Southwestern and directs seven financial and operational departments across campus: Accounting and Fiscal Services, Budget and Resource Planning, Supply Chain Management, Sponsored Programs Administration, Auxiliary Enterprises, and Real Estate Services, and Southwestern Heath Resources Finance. Additionally, in 2016, Mr. Serber was named Treasurer for all Southwestern Health Resources legal entities.

Prior to joining UT Southwestern, he was the manager of the Capital Planning Group at American Airlines.

Mr. Serber received his Master of Business Administration from the Fuqua School of Business at Duke University in 1999 and a Bachelor of Science from Cornell University in New York in 1994.


Erin Sine, J.D.

Vice President for Legal Affairs

Erin Sine

Erin Sine, a collaborative and solutions-oriented leader, became Vice President for Legal Affairs in September 2021. She oversees a team of experienced attorneys, risk managers, and support staff who help advance UT Southwestern’s work and strategic priorities in compliance with all appropriate laws and regulations. As the Chief Legal Officer, Institutional Ethics Officer, and the designated Public Information Official for the University, Ms. Sine is responsible for providing guidance to executive leaders, faculty, and staff to ensure UT Southwestern Medical Center maintains the highest levels of public trust as a state institution.

Ms. Sine joined the Office of Legal Affairs in 2010 and was the Director/Managing Attorney – General Legal Services since 2015, during which time she gained broad experience in legal and regulatory matters affecting an academic medical center. Before joining UT Southwestern, Ms. Sine was a commercial litigation associate at the law firm of McGuireWoods in Richmond, Va.

She holds a Bachelor of Arts in Communications and English from Clemson University and earned her Juris Doctorate from Tulane University School of Law.


Cameron W. Slocum, M.B.A.

Vice President and Chief Operating Officer for Academic Affairs

Cameron W. Slocum, M.B.A.

As Vice President and Chief Operating Officer for Academic Affairs, Cameron W. Slocum, M.B.A., focuses on administrative, strategic, and financial functions to support UT Southwestern’s academic missions. His reporting relationships to the leadership of Academic, Health System, and Business Affairs allow him to improve day-to-day operating activities.

He joined UT Southwestern Medical Center in September 2014. Previously, Mr. Slocum held the position of Vice President and Chief Operating Officer for the University of Texas Medical Branch Schools of Medicine, Nursing, and Health Professions, and the Graduate School, and also worked as Executive Director of the Faculty Group Practice Plan during his 16-year tenure with UTMB.

He is the author of “UTMB: From Disaster Planning to Long-Term Recovery,” which appeared in the Domestic Preparedness Journal. In 2012, Mr. Slocum was honored by the Houston Business Journal with a “40 under 40” award, which recognizes the top 40 young professionals in the Houston region. He is an active leader in the Association of American Medical Colleges’ Group on Business Affairs and served as National Chair in 2014 and 2015.

Mr. Slocum earned a bachelor’s degree in finance from Texas A&M University and a Master of Business Administration from the University of Houston – Clear Lake.

Valla Wilson

Vice President for Internal Audit and Chief Audit Executive

Valla Wilson

Valla Wilson became Vice President for Internal Audit in June 2019. She also serves as Chief Audit Executive, reporting to UT Southwestern Medical Center President Daniel K. Podolsky, M.D., and the Audit Committee Chair. Previously, Ms. Wilson worked as Interim Vice President for Institutional Compliance and HIPAA Privacy Officer during a national search to fill the position while also performing her duties as Associate Vice President for Internal Audit, a position she held for three years following three years as Assistant Vice President.

In her new role, Ms. Wilson is responsible for leading the Office of Internal Audit to assess risks and perform internal audits (compliance, financial, operational, and information technology), consult, and conduct investigations.

Before joining UT Southwestern, Ms. Wilson spent six years at Duke University in Durham, North Carolina, serving first as Director of Internal Audit for Duke Medicine and later as Chief Compliance, Privacy, and Audit Officer for the Private Diagnostic Clinic of Duke Medicine. Ms. Wilson also previously worked in chief compliance and chief audit executive roles for Lakeland Regional Health System of Lakeland, Florida, as a manager for Arthur Andersen, and years in other internal audit and operational management positions.

She received Bachelor of Science degrees in business administration and business education from Peru State College in Peru, Nebraska. She is a Certified Internal Auditor and a Certified Healthcare Internal Audit Professional, and she holds a Certification in Risk Management Assurance.