Eric F. Kuehn, M.D.

Eric Kuehn attended Wake Forest University as an undergraduate, then received his M.D. degree from the Medical College of Georgia School of Medicine. He completed his internship in internal medicine at the University of North Carolina at Chapel Hill and did his residency training in Radiation Oncology at the University of Florida. Dr. Kuehn joined the practice in 1995. He is a member of the Mission Hospitals Cancer Committee, is the physician advisor to the System’s cancer data service, and is the Medical Director of Mission’s Radiation Oncology department. He is also Course Director for Mission’s.

Leta Carlson Lamb, M.D.

Leta Lamb attended Duke University for her undergraduate education. She is a graduate of the Medical College of Georgia School of Medicine. She completed her transitional internship at the Medical College of Georgia and her residency training at M.D. Anderson Hospital at the University of Texas. Dr. Lamb has held academic appointments at the University of Texas and the Medical University of South Carolina. She joined the practice in 1997.

Kellie Smith Condra, M.D.

Kellie Condra received her B.S. in Biology from East Tennessee State University and then received her M.D. degree from the University of Tennessee College of Medicine. She completed her transitional internship in Internal Medicine at East Tennessee State Quillen College of Medicine. She then did her residency training in Radiation Oncology at the University of Florida. Following residency, Dr. Condra held an academic appointment at Duke University in the Department of Radiation Oncology. Dr. Condra joined the practice in 2000. She is currently the Medical Director of Mission Breast Program.

Sesalie Smathers, M.D.

Sesalie Smathers attended Appalachian State University as an undergraduate majoring in chemistry. She received her MD degree from the University of North Carolina at Chapel Hill School of Medicine. She completed her transitional internship at Virginia Mason Medical Center and her residency at the University of Washington Medical Center in Seattle, Washington. Dr. Smathers joined the practice in 2001.

Matthew C. Hull, M.D.

Matthew Hull has over 20 years of experience in the field of radiation oncology as a radiation therapist, physician assistant, and radiation oncologist. He received his B.S. in the Physician Assistant program from the University of Wisconsin. He received his MD degree from the Medical College of Wisconsin. He completed his internship at Aurora HealthCare in Milwaukee, Wisconsin and his residency at the University of Florida. Dr. Hull joined the practice in 2003.

W. Mark McCollough, M.D.

Mark McCollough attended the University of Florida as an undergraduate, where he received his B.S. in chemistry. He then received his MD degree from the University of Florida College of Medicine. He completed both his internship and residency at the University of Florida. He has held academic appointments at the University of Florida College of Medicine in the Department of Radiation Oncology. Dr. McCollough joined our practice in 2003. He is the Medical Director of Margaret Pardee’s Radiation Oncology department.

Marilyn L. Haas, PhD, ANP-C

Marilyn Haas received her Baccalaureate in nursing from Valparaiso University. She continued her training and received her Master’s in nursing education from the University of Florida and Master of Science in nursing from Clemson University. Her doctorate in nursing and nurse practitioner certificate were achieved at the University of South Carolina. She is nationally certified as an adult nurse practitioner by the American Nurses Credentialing Center. As a nurse practitioner at MRO, she assists in managing patients who are undergoing radiation therapy and works closely with the physicians. She joined the practice in 1997.