Our Team: Doctors
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Elizabeth S. Christian, MD
Elizabeth S. Christian, MD is a graduate of the Medical University of South Carolina. She completed her residency in Internal Medicine from Bowman School of Medicine in Winston Salem, North Carolina, and her fellowship from The University of Alabama Medical Center in Birmingham, Alabama, in Hematology, Medical Oncology. Dr. Christian is also a member in the South Carolina Medical Association; she is a former President of the South Carolina Oncology Society and serves as a member of the Roper St. Francis Cancer Committee, Piedmont Oncology Association, and American Society of Clinical Oncology as well as other local and state professional organizations. Dr. Christian has published works in the Journal of the Reticuloendothelial Society, Journal of Immunology, American Family Physician, American Journal of Clinical Oncology, and the American Journal of Medicine.
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David M. Ellison, M.D.
David M. Ellison, MD is board certified in Internal Medicine, Medical Oncology and Hematology. A graduate of Yale University, he completed his residency in Internal Medicine at Johns Hopkins Hospital and his fellowship at Duke University in Hematology/Oncology. Dr. Ellison is the Medical Director of Roper St. Francis Cancer Center, the Chairman of The Roper Cancer Committee and serves on the Board of Directors for Roper St. Francis Healthcare, as well as the Board of Directors for The Medical Society of South Carolina. He is the founding chairman of the Low Country Affiliate of the Susan G. Komen Foundation. Dr. Ellison has published works in The Journal of Immunology and the European Journal of Pharmacology and, most recently, in the Journal of Clinical Oncology.
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George F. Geils, Jr., M.D.
George F. Geils, Jr., MD is board certified in Internal Medicine, Medical Oncology and Hematology. Dr. Geils is the Medical Director for the Blood and Marrow Transplant Program for Roper St. Francis Healthcare. A graduate of the Medical University of South Carolina, he completed his residency at the University of Maryland Medical Center, and his fellowship at The University of Alabama at Birmingham in Hematology, Medical Oncology and Bone Marrow Transplantation. Dr. Geils is a member of the American Society for Blood and Marrow Transplantation, International Society of Hematotherapy and Graft Engineering, American Medical Association, American College of Physicians, American Society of Hematology, American Society of Clinical Oncology and various local and state professional organizations relating to his field. He serves as the Chairman of The Roper St. Frances Institutional Review Board, Chairman of the Roper St. Francis Pharmacy and Therapeutics Committee, and Member of the Roper Medical Executive Committee. Dr. Geils has several published works in the Journal of Clinical Oncology and the Journal of Hematotherapy. He continues his research in allogeneic stem cell transplantation, alloimmune recovery and cell-mediated graft-versus disease effect.
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James M. Orcutt, M.D.
James M. Orcutt, MD is board certified in Medical Oncology. He obtained his Doctorate of Medicine degree in 1990 from Bowman Gray School of Medicine of Wake Forest University. He then entered his internship in Internal Medicine at Carolinas Medical Center where he completed his residency in 1993. He subsequently completed his fellowship in Hematology and Medical Oncology from the Medical College of Virginia in 1996. Dr. Orcutt currently serves as the community leader and principal investigator for the Southeastern Cancer Control Consortium and Roper St. Francis Cancer Center. He also serves on the Roper St. Francis Healthcare Institutional Review Board. He has published works in Blood Journal. He is a member of the American Society of Clinical Oncology, American Society of Hematology, American College of Physicians, American Medical Association and various local and state professional organizations relating to his field.
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George P. Keogh, M.D.
George P. Keogh, MD earned his undergraduate degree in English Literature from the University of Pennsylvania in Philadelphia. He graduated from Columbia University College of Physicians and Surgeons in New York City and stayed for internship and residency in internal medicine at Columbia-Presbyterian Medical Center. He completed his fellowship in hematology and medical oncology at Duke University Medical Center in Durham, North Carolina. He is a member of The American Medical Association, American Society of Clinical Oncology and American Society of Hematology. Dr. Keogh has been published in Blood Journal, Breast Cancer Research and Treatment, and is an author of a clinical trial for Waldenström's macroglobulinemia that has been published in the Journal of Clinical Oncology. Dr. Keogh joined Charleston Hematology Oncology Associates, P.A., in 2004. He is board certified in medical oncology, hematology, and internal medicine.
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Gene B. Saylors, M.D.
Gene B. Saylors, MD is board certified in Medical Oncology and Internal Medicine. He received his Bachelor of Science in Cellular Biology from the University of Georgia. He obtained his Doctorate of Medicine degree from The University of South Carolina School of Medicine. He then entered his internship and completed his residency in Internal Medicine at the University of Alabama at Birmingham. He also completed his fellowship in Hematology and Medical Oncology while at The University of Alabama at Birmingham. Dr. Saylors holds memberships with the South Carolina Medical Association, American College of Physicians, American Society of Clinical Oncology and The American Society of Hematology. He has done extensive work with The University of Alabama at Birmingham in breast cancer and lymphoma, specifically the use of monoclonal antibodies in triple negative breast cancer, with funding by the Susan G. Komen for the Cure Foundation. Dr. Saylors has published works in the Journal of General Internal Medicine and Biology of Blood and Marrow Transplantation.
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Brian M. Lingerfelt, MD
Brian M. Lingerfelt, MD earned his undergraduate degree in Chemistry from Furman University in Greenville, South Carolina. He graduated from Virginia Commonwealth University School of Medicine at the Medical College of Virginia Campus in Richmond, Virginia and continued his medical training with internship and residency in Internal Medicine at Virginia Commonwealth University Health System. He completed his fellowship in Hematology and Medical Oncology at the Emory University Winship Cancer Institute in Atlanta, Georgia. Dr. Lingerfelt performed extensive laboratory research at Furman University synthesizing anti-cancer drugs and at Virginia Commonwealth University Health System analyzing the effect of checkpoint kinase inhibitors in multiple myeloma cell lines. His clinical research at Emory University focused on the inflammatory response to tyrosine kinase inhibitors in kidney cancer. He has published in the Journal of Supportive Oncology, the Journal of Pharmaceutical and Biomedical Analysis, and Bioorganic and Medicinal Chemistry. He is a member of the American Medical Association, the American Society of Clinical Oncology, and the American Society of Hematology. Dr. Lingerfelt joined Charleston Hematology Oncology Associates, P.A., in 2012.
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George F. Geils, Sr., M.D.
(Retired President)
George F. Geils, Sr., MD is board certified in Internal Medicine, Medical Oncology and Hematology. A graduate of The Medical University of South Carolina, he completed his residency in Internal Medicine from The University of Alabama Hospitals and Clinics and his fellowship in Hematology and Medical Oncology from The University of Alabama Hospitals and Clinics in Birmingham, Alabama. Dr. Geils is a founding member of the Southern Association for Oncology as well as holding memberships in the International Society of Hematology, American College of Physicians, American Society of Hematology, American Society of Clinical Oncology, South Carolina Oncology Society, and various other state and local professional organizations relating to his field. Dr. Geils has published professionally in Blood Journal, and has been the co-author of works presented at the American Society of Clinical Oncology.
Our Team: Physician Assistants
Susan G. Cump, PA-C
Susan G. Cump, PA-C, graduated from Trinity College in 1985 with a Bachelors Degree in biology, she attended PA school at Emory University in Atlanta, Georgia in 1987. Susie holds membership with The American Association of Physician's Assistants and the NCCP. Susie enjoys running and spending time with her family here in Charleston.
Mary S. MacDonald, PA-C
Mary S. MacDonald, PA-C, is a board certified Physician Assistant and has specialized in Hematology and Medical Oncology for 8 years. She completed her Master's degree as a Physician Assistant at the Medical University of South Carolina and received her Bachelor of Science with honors from Presbyterian College. She is a member of the South Carolina Association of Physician Assistants.
Jamie L. Witbeck, PA-C
Jamie L. Witbeck, PA-C is a board certified physician assistant. Jamie graduated Suma Cum Laude from James Madison University in Harrisonburg, VA in 2008, earning a Bachelor’s Degree in Kinesiology with a concentration in exercise science and a minor in biology. Jamie received her Masters in Physician Assistant studies at the Medical University of South Carolina in 2010. Originally from Pennsylvania, Jamie enjoys spending time outdoors in the beautiful weather of Charleston and stays active by running, dancing and going to the beach. She also has a passion for mission work in South Africa and plans to pursue other medical missions in the future. She is a member of the American Academy of Physician Assistants and the Alpha Eta Society, MUSC Chapter.
Eliza C. Hough, PA-C
Eliza C. Hough, PA-C is a board certified physician assistant. Eliza graduated Cum Laude from Clemson University in 2000 with a Bachelor's Degree in psychology and later received her Masters in Physician Assistant Studies from Medical University of South Carolina in 2009. She is a proud Charleston native who enjoys many things in her free time including inshore or offshore fishing with her husband and learning about photography. Professional memberships include American Academy of Physician Assistants, South Carolina Academy of Physician Assistants and Golden Key National Honor Society.
Joanna S. Harvey, PA-C
Joanna S. Harvey, PA-C is a board certified physician assistant. She graduated from Georgia Institute of Technology in Atlanta, GA in 2001, earning a Bachelor of Science in Industrial and Systems Engineering. Joanna received her Masters in Physician Assistant studies at Northeastern University in Boston, MA in2011. She is a member of the American Academy of Physician Assistants and South Carolina Academy of Physician Assistants. Joanna enjoys all things outdoors in beautiful Charleston, especially fishing and kayaking with family and friends.
Our Team: Nurse Practioners
Lisa S. Smith
Lisa S. Smith, MSN, APRN-BC, AOCN, received her Master's degree in nursing with an oncology specialty from Emory University after graduating from the Medical College of Georgia with a Bachelor of Science in nursing. She received an associate of science from Middle Georgia College. Ms. Smith is board certified as an adult nurse practitioner by the American Nurses Credentialing Center and as an advanced oncology certified nurse by the Oncology Nursing Certification Corporation. She is a member of Sigma Theta Tau Honor Society of Nursing, American Academy of Nurse Practitioners, Low Country Advanced Practice Nurses Association, and the National Oncology Nursing Society nurse practitioner special interest group.
Rebecca Orr
Rebecca M. Orr, MSN, ANP-BC, is a board certified adult nurse practitioner by the American Nurses Credentialing Center. She graduated with honors from the Medical University of South Carolina receiving a Masters of Science in Nursing with a specialty in Palliative Care. Rebecca also received her Bachelor of Science in Nursing from the Medical University of South Carolina. Rebecca has extensive clinical experience in the specialty of pain management. She is a published author in Nursing 2011 and is a member of Sigma Theta Tau Honor Society of Nursing.
