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Ralph H. Johnson VA Medical Center


Leadership Team

Portrait of Scott R. Isaacks, MBA, FACHE

Scott R. Isaacks, MBA, FACHE | (843) 789-7200

Director, CEO

Mr. Scott R. Isaacks, MBA, FACHE, FAAMA, is the Director at the Ralph H. Johnson VA Medical Center, appointed in November 2014. He served as the Associate Director at the Charleston VAMC from August 2010 until assuming his role as Director. The Ralph H. Johnson VA Medical Center and its six community-based outpatient clinic (CBOCs) serve approximately 75,000 Veterans along the South Carolina and Georgia coast, providing comprehensive primary, mental health and specialty care. Charleston VAMC provides more than 1 million outpatient visits and 4,500 inpatient stays each year, and serves as a regional referral center for a number of medical specialties. Charleston VAMC is also a major teaching hospital and research facility with more than 95 principal investigators performing more than 280 studies, funded in excess of $28.8M annually. Mr. Isaacks has led in improvements that have resulted in Charleston VAMC being recognized as a top performer for quality of care and efficiency both within VA and nationally amongst public and private sector hospitals and health care systems.
Mr. Isaacks began his VA career at the Miami VAMC in 1992 as an Administrative Resident. He has held a variety of administrative and clinical management positions in services, including serving as Executive Assistant to the Director, Staff Assistant to the Chief of Staff, and Acting Associate Director. He has also served as Acting Director in Birmingham, Dublin and Charleston. Before coming to Charleston, Mr. Isaacks served as the Assistant Director at the Birmingham VA Medical Center. Throughout Mr. Isaacks’ career, he has had responsibility for oversight of clinical and administrative operations at the Miami, Amarillo, Birmingham, and Charleston VA Medical Centers.
Mr. Isaacks earned a Bachelor of Arts Degree in English and Economics from the University of Miami and a Master of Business Administration Degree with a concentration in healthcare management from the University of Tennessee.

Portrait of Sharon Castle, PharmD, BCPS

Sharon Castle, PharmD, BCPS | (843) 789-7500

Acting Associate Director, COO

Dr. Sharon Castle is the Acting Associate Director at the Ralph H. Johnson VA Medical Center. She is the Chief, Pharmacy Service and the PGY-2 Pharmacy Administrative Residency Director. Dr. Castle received her Doctor of Pharmacy degree from the University of Kentucky. She is Board Certified in Pharmacotherapy by the Board of Pharmacy Specialties. She holds an adjunct faculty appointment with the South Carolina College of Pharmacy and serves on numerous VISN and National VA workgroups, including the National Clinical Pharmacy Advisory Board.

In 2017, she won the Lewis Blackman Healthcare Executive award for her leadership in opioid safety initiatives. For the past 11 years, she has led workload capture documentation education for pharmacists at all VAs throughout the country. In 2015, she was part of a group of pharmacists that received an Under Secretary for Health Pharmacy Benefits Management Innovation Award. She also led a national group to improve patient satisfaction survey questions for pharmacy. Prior to arriving in Charleston, Dr. Castle was the Chief, Pharmacy Service at the VA Medical Center in Huntington, WV where she held an associate professor appointment with the Marshall University School of Medicine Department of Pharmacology and Clinical Assistant Professor appointments at West Virginia University and Ohio Northern University. Dr. Castle’s early career focused on clinical pharmacy practice in infectious disease, internal medicine and critical care.

Portrait of Florence N. Hutchison, MD

Florence N. Hutchison, MD | (843) 789-7202

Chief of Staff

Dr. Hutchison is Chief of Staff at the Ralph H. Johnson VA Medical Center and Associate Dean and Professor of Medicine at the Medical University of South Carolina. She is a graduate of Millsaps College and the University of Mississippi School of Medicine. She completed her residency in internal medicine at St. Mary’s Hospital and Medical Center in San Francisco, CA, and a fellowship in nephrology at the VA Medical Center in Martinez, CA. Dr. Hutchison is board certified in internal medicine and nephrology.

After completing her fellowship, she served as a staff nephrologist at the VA Medical Center in Martinez, CA, and was also Assistant Professor of Medicine at UC, Davis. Dr. Hutchison became Chief, Dialysis Unit at the VA Medical Center, Charleston, South Carolina, in 1989, as well as Associate Professor of Medicine at the Medical University of South Carolina (MUSC). She was named Chief, of Medical Specialty Service in 1997, and was appointed Chief of Staff in 2000. She is also a Professor of Medicine and Associate Dean for VA Affairs at MUSC.

Dr. Hutchison has served as the Director of the VISN 7 Research Service Line, the Chair of the VISN 7 Compliance Committee, a member of the VHA National Finance Committee, and as an advisor to the National VA Office of Research Compliance and Assurance. She has served as Program Chair for the National Women in Nephrology organization, as a member of the Program Committee for the National Kidney Foundation, the Public Advisory Committee for the American Physiological Association, the nominating committee of the Southern Society for Clinical Investigation, and currently serves as a member of the Board of Directors of the OQUIN Foundation. She was Co-Chair of the VHA Systems Improvement Subcommittee of the Systems Redesign Steering Committee and on the VHA Chiefs of Staff Advisory Board and numerous other national committees. Dr. Hutchison recently served as the Acting Chief Medical Officer for VISN 7 for more than

Portrait of Garett Schreier, MSN, RN

Garett Schreier, MSN, RN | (843) 789-7411

Associate Director for Patient/Nursing Services

Garett Schreier, MSN, RN, was appointed as the Associate Director, Patient Care Services/Executive Nurse at the Ralph H. Johnson VA Medical Center in Charleston, SC on May 1, 2016. He served in the same capacity at the W.G. (Bill) Hefner VA Medical Center in Salisbury, NC since August 2013.

Mr. Schreier served as the Director of Quality Management at the Lebanon VA Medical Center, Lebanon, Pennsylvania, and was the Deputy Nurse Executive at the Lebanon VA prior to his role in QM. Mr. Schreier served a detail to VA Central Office to support the implementation of the Caregiver Support Legislation. Mr. Schreier has been an Associate Chief of Nursing Service for Geriatrics and Extended Care, Acute Care, and Mental Health at various times during his VA Career. During this time Mr. Schreier served as the Clinical Nurse Advisor for the Geriatric Nursing Field Advisory Committee for the Office of Nursing Services. Mr. Schreier is a Veteran of the United States Navy and served as a Fleet Marine Force Navy Corpsman. Mr. Schreier went on to receive a commission as a Nurse Corps Officer.

Mr. Schreier holds a Master’s of Science in Nursing from the University of Phoenix and Bachelor of Nursing from York College of Pennsylvania.