Our Doctors

Susan Caldwell-Claytor, M.D., F.A.A.P.

Originally from Ohio, Dr. Claytor has been a South Carolina resident since the age of 17. She received her B.S. degree from The University of South Carolina and her medical degree from The Medical University of South Carolina in Charleston. She returned to Columbia for her pediatric training at Palmetto Richland Memorial Children’s Hospital where she also served as Chief Resident of Pediatrics. She is board certified through the American Board of Pediatrics and is a member of the American Medical Association, Columbia Medical Society and a Fellow of the American Academy of Pediatrics. She has participated in the pediatric training program at Children’s Hospital for over two decades as a Clinical Associate Professor of Pediatrics in the School of Medicine.

In addition to her expertise in well child care and routine pediatric disorders, Dr. Claytor has a special interest in multiple birth families, adolescent medicine and ADD/ADHD. Dr. Claytor is married and has four daughters including a set of twins. Outside the practice of medicine, her interests include family, church, medical missions, and equestrian activities

Randall S. Colby, M.D., F.A.A.P.

Dr. Colby first came to Columbia, South Carolina 24 years ago to attend the University of South Carolina where he received a B.S. degree in Chemistry. He then attended the University of South Carolina School of Medicine in Columbia. His pediatric training was done at Palmetto Richland Memorial Hospital and he served as Chief Resident of Pediatrics during his final year. He then went on to complete a Medical Genetics Residency at the Greenwood Genetic Center in Greenwood, South Carolina. Dr. Colby is board certified through the American Board of Pediatrics. He is a fellow of the American Association of Pediatrics and a member of the South Carolina Medical Association.

Besides general pediatric well and sick care, Dr. Colby’s medical interests include: genetic disorders, birth defects, syndromic conditions, and causes of developmental delay and mental retardation. Dr. Colby has two daughters (currently twelve and fourteen years old) and is married to Billie Jean Waddell M.D. (a physician in aesthetic medicine). His personal interests include church, family, reading, and boating activities.