Leadership Team - Carl Vinson VA Medical Center Dublin, Georgia
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Carl Vinson VA Medical Center Dublin, Georgia


Leadership Team

David L. Whitmer, FACHE, Medical Center Director

David L. Whitmer, FACHE | 478-272-1210 Ext. 2901

Medical Center Director

David L. Whitmer has over 25 years of management and leadership experience at the National Institutes of Health (NIH) and the Veterans Heath Administration (VHA) and is currently the Director at the Carl Vinson VA Medical Center in Dublin, GA. A board-certified healthcare executive, Whitmer recently completed a yearlong assignment as the Interim Director for the Roseburg VA Healthcare System (RVAHCS) in Roseburg, OR. The RVAHCS consists of a medical center located in Roseburg, OR, two Outpatient Clinics located in Brookings and North Bend, OR, and the Eugene VA Health Care Center in Eugene, OR. As the Chief Operating Officer for the VA Sunshine Health Care Network (VISN 8), starting May 2014, Whitmer held a senior leadership position responsible for innovatively applying planning and health administration skills to provide Veterans with high quality care consistent with community standards and industry best practices. Whitmer holds a Master of Political Science degree with an emphasis in public administration and a Bachelor of Education degree both from the University of South Florida. A former high school teacher and football coach in Leesburg, Florida, he started his NIH career as a presidential management intern in 1993, spending his first year as an administrative officer for the National Cancer Institute (NCI). Whitmer held progressively more challenging management positions at NIH, including serving for nearly eight years as the SES Executive Officer for the National Eye Institute (NEI), where he helped support the nation’s vision research program. Whitmer is committed to community involvement and has been very involved in outside volunteer positions. He is an active member of the American College of Health Care Executives (ACHE). When not at work, Whitmer enjoys spending time with his family, playing golf, SCUBA, boating, and gardening.

Dr. John O'Brien, Chief of Staff

Dr. John O'Brien | 478-272-1210 Ext. 2903

Chief of Staff

Dr. John O'Brien began his role as Chief of Staff at Carl Vinson VAMC in Sept. 2019. He is from Missouri and a graduate of the University of Missouri Columbia) School of Medicine. After completing his Internal Medicine residency and Gastroenterology Fellowship, he accepted an Inflammatory Bowel Disease Fellowship at Johns Hopkins Hospital followed by an appointment as a Medical Staff Fellow / Clinical Research Associate in the National Institute of Diabetes and Digestive and Kidney Diseases branch at the National Institutes of Health. Dr. O'Brien accepted a full-time, tenure-track, position at Washington University School of Medicine / Barnes-Jewish Hospital. He was then recruited to Indiana University School of Medicine where he accepted his first administrative role as the Gastroenterology (GI) Fellowship Director. Then, Dr. O'Brien accepted a Chief of Gastroenterology & Hepatology at the Southern Illinois University (SIU) School of Medicine. He was selected as the next Director of the Endoscopy Lab and Division Chief of GI / Hepatology and Nutrition at Creighton University School of Medicine and became a Professor of Surgery with the department. Dr. O'Brien was recruited to Michigan as the Chair of the Department of Medicine at the Ascension Providence Hospitals overseeing more than 600 physicians. He also accepted an appointment as a Clinical Professor of Medicine at Wayne State University. Dr. O'Brien is a member of the Alpha Omega Alpha Medical Honor Society, Fellow in the American College of Physicians, Fellow in the American College of Gastroenterology and was selected as the Crohn’s and Colitis Foundation of American (CCFA) Physician of the Year several years ago. He is board certified in both Internal Medicine and Gastroenterology. Dr. O'Brien brings a wealth of experience in medical education, research, clinical medicine, and administration to the Carl Vinson VAMC.


Gerald "Jay" DeWorth | 478-277-2702

Associate Director

Gerald M. “Jay” De Worth was officially appointed as the new Associate Medical Center Director for the Carl Vinson VA Medical Center on June 16, 2012. Immediately prior to his current assignment, De Worth served as the Executive Assistant to the Medical Center Director at the VA medical center in Alexandria, VA. During a VA career that spans 27 years, De Worth has occupied a variety of positions of increasing responsibility, including Director of Facilities Management at the Alexandria VA Health Care System; Director of Patient Support Services at the John J. Pershing VA Medical Center in Poplar Bluff, MO; and Chief of Clinical Nutrition at the Charlie Norwood VA Medical Center in Augusta, GA. He began his VA career as a clinical dietician at the Birmingham VA Medical Center in Alabama. De Worth’s VA experience is broad and encompasses multiple areas: customer service representative for the Alexandria VA Health Care System and Veterans Integrated Service Network (VISN) 16; strategic planning; VA and Department of Defense (DoD) collaboration; Community-based Outpatient Clinic (CBOC) implementation planning; patient safety; Operation Enduring Freedom (OEF)/Operation Iraqi Freedom (OIF) program; suicide prevention program; and mental health environment of care. He has a passionate commitment to ensuring superior customer service wherever he works and is particularly enthusiastic about initiatives relating to VA’s Patient and Family Centered Care (PFCC) initiatives. A member of the American College of Healthcare Executives (ACHE), De Worth continually seeks new challenges that will expand his knowledge base related to VA healthcare. A native of New Jersey, De Worth received his undergraduate degree at the University of Alabama and pursued graduate work at Central Michigan University. He has a beautiful wife, Jackie, and three lovely daughters.

Pamela Jackson, DNP, RN, Acting Associate Director for Patient Care Services

Pamela Jackson, DNP, RN | 478-277-2730

Acting Associate Director for Patient Care Services

Dr. Pamela L. Jackson is the Acting Associate Director of Patient Care Services at Carl Vinson Veterans Affairs Medical Center, Dublin, GA. The daughter of a Veteran and an Army Reserve Veteran herself, Dr. Jackson has over 30 years of nursing background with experience in nursing leadership/management (off-tour nursing supervisor), professional education, emergency medicine, psychiatric, ambulatory surgery, and home health care. She began her nursing career as a licensed practical nurse in 1987 and continued her educational pursuit until she obtained a terminal degree in 2014. She holds a Doctorate in Nursing Practice-(DNP) in Administration with an Educator Concentration from Samford University, Birmingham, AL. Dr. Jackson has also obtained ANCC’s distinguished certification as an Advanced Nurse Executive. Her professional involvement at the national level includes her recent appointment to the Substance Abuse and Mental Health Services Administration’s (SAMHSA) Minority Fellowship Program (MFP) at the American Nurses Association. She is a member of Sigma Theta Tau Nursing Honor Society and Alpha Kappa Alpha Sorority, Inc.