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Saint Thomas West Hospital


Fahad Tahir
President and CEO, Saint Thomas Midtown and West Hospitals


Fahad Tahir, FACHE is President and Chief Executive Officer of Saint Thomas Midtown and West Hospitals, which are part of Saint Thomas Health in Ascension’s Tennessee market. In addition to leading both hospitals, Fahad’s responsibilities include partnering with payors, physicians/clinicians and stakeholders to progress the integrated deliver system’s managed care and value-based care strategies. Fahad’s leadership philosophy is to build a culture of trust to enhance clinical innovation and growth.

Prior to his current role, Fahad served as President and Chief Executive Officer of Saint Thomas Medical Partners, where he oversaw clinical, operational and financial performance of one of the region’s largest medical groups as well as physician network strategy, physician development and recruitment, service line development and managed care/value based care. During his tenure, Fahad restructured a physician governance model and organizational structure to develop a physician-led model, physician-administration dyad and defined roles for decision making. From 2014-2017, Fahad increased year over year growth in annual net revenue by 36%, implemented a $70 million capital investment of ten Care Centers in strategically significant markets, and integrated more than 500 primary care and specialty physicians/clinicians across 95 practices into a unified medical group.

Fahad has been part of the Ascension health system since 2003. Prior to joining Saint Thomas Health, Fahad served as Vice President of Physician Enterprise and Community Health Network at Providence, a health system in Washington, D.C. Fahad’s responsibilities at Providence included practice operations, clinical integration strategy and growth plan of the physician enterprise. He oversaw and directed the integration of several practices across specialties, patient centered medical home certification, and affiliations with several primary care and community health centers. Additionally, Providence obtained three CMS Innovation awards, totaling more than $18 million. These recognized programs included developing a clinically integrated network, new payment models for diabetes education and a clinically integrated prenatal care network. He was also Executive Sponsor for the implementation of a Health Information Exchange, an integrated electronic medical record system that brings together the health records of multiple physician group practices, clinics, hospitals and health centers. Prior, Fahad held roles in physician practice development, acquisitions and practice management at Ascension’s Columbia St. Mary's Health System in Milwaukee, WI.

Fahad earned his MBA from Loyola University Chicago and his bachelor’s degree in Finance from the University of Wisconsin-Milwaukee. Fahad is a Fellow in the American College of Healthcare Executives, as well as a Fellow of Washington DC's Health Care Advisory Board. He is a member of Medical Group Management Association and a member of the American Public Health Association.


Mark Marsden, CMO Mark Marsden
Chief Medical Officer

After twenty years as an Emergency Medicine physician at Saint Thomas West Hospital, Mark Marsden, MD was named its chief medical officer in October 2013. Prior to joining the administrative team, he served as president of the medical staff 2012-2013, Medical Director of the Emergency Department 2009-2013, and president of Emergency Medicine Consultants of Nashville, PC 2001-2013, as well as working full-time in the Emergency Room.

Dr. Marsden's medical career began in Saint Thomas West Hospital’s Emergency Department in July 1994. He had recently completed his residency in Emergency Medicine at University of Mississippi Medical Center. Mark graduated from Louisiana State University and Louisiana State University Health Science Center. Under his leadership in the Emergency Department, Dr. Marsden made many improvements including conversion to electronic medical records and digital imaging, and implementing Computerized Physician Order Entry. He was also instrumental in acquiring bedside ultrasound and a CT scanner for the Emergency Department.

Dr. Marsden is often seen making rounds and visiting hospital staff, interactions that he feels are important to building a positive team concept. He also believes the relationships he established in his twenty year career in the Emergency Department create a collaborative network to face the health care challenges of the day. As chief medical officer, Dr. Marsden works diligently to further his mission of improving quality care and patient safety.


Sam Straton
Chief Nursing Officer

As a registered nurse, Sam Straton brings 24 years of experience to this position, having worked in various nursing roles to include critical care, procedural care and case management. Sam joined the Saint Thomas team as the Director of Cardiac Services in November 2016. Before coming to Saint Thomas, she served in various leadership roles at Jewish Hospital and the University of Louisville Hospital in Louisville, Kentucky.

Sam received her Bachelor of Nursing degree from Regis University and is currently pursuing her Master’s degree. 



Harrison Kiser
Chief Operating Officer

Harrison Kiser previously served as Chief Operating Officer for several hospitals within Northwest Health System in Northwest Arkansas, part of Community Health Systems. These hospitals included NW Medical Center – Bentonville and Willow Creek Women and Children’s Hospital. Prior to his various hospital-based roles, Harrison served in a management position responsible for the 100+ multispecialty physician network.

He graduated from the University of Memphis with a Bachelor of Science in Business Administration in Finance and from David Lipscomb University with a Master’s of Business Administration in Healthcare Administration.