Lexington Office

Dr. James Dewar

MD, FAAP

Dr. Dewar was born in Yakima, Washington, but has proudly called South Carolina home since the seventh grade—and has been a devoted Gamecock ever since. From Irmo High School to the University of South Carolina for both his undergraduate education and medical degree, his roots in the Midlands run deep.

After completing his residency at Palmetto Richland Children’s Hospital and spending time practicing in Flagstaff, Arizona, Dr. Dewar returned home to join Palmetto Pediatrics in 2003. Since then, he has remained dedicated to caring for the children and families of his community.

Dr. Dewar believes strong physician-patient relationships begin with meaningful conversation. He takes the time to ensure both parents and patients feel heard, understood, and confident in their care. Whether addressing a puzzling rash, a lingering fever, or a routine wellness visit, he is committed to providing thoughtful answers and ensuring every question is addressed.

Outside the clinic, Dr. Dewar and his wife, Melanie, are proud parents of four children—one son and three daughters. He enjoys attending church, cheering on two of his daughters at volleyball games, and watching his youngest daughter sing and play guitar in musical performances. He is also proud to see his oldest son continue the family tradition of attending the University of South Carolina.

A dedicated LEGO enthusiast, Dr. Dewar is always adding a new creation to his display at the Lexington office. He and his family also enjoy hiking and exploring trails throughout South Carolina.

Dr. Alex Gaudin

MD, FAAP

Originally from Starkville, Dr. Alex Gaudin earned her undergraduate degree in Biology from Mississippi State University before attending University of Mississippi Medical Center for medical school. She completed her pediatric residency at Prisma Health Children's Hospital in 2025 and joined Palmetto Pediatrics that same year.

She has a passion for preventive care, education, and child development. Her approach is to listen first, validate concerns, and connect families with appropriate resources depending on your child’s individual needs.

A self-described Disney fan, Dr. Alex Gaudin enjoys beach days, walks with her family and dog, cross-stitching, and reading. She and her husband, Nathan Gaudin, have one son, Oliver.

Dr. Sonya Head

MD, FAAP

After completing her medical degree at the University of South Carolina School of Medicine and residency at Palmetto Health Children's Hospital Dr Head returned to her hometown of Aiken SC. After five years in private practice she returned to the midlands in 2006 and joined Palmetto Pediatrics of Lexington.

During her 25 years in private practice Dr Head has enjoyed empowering parents and watching her patients grow into confident and accomplished young adults. She believes relationships are the cornerstone of pediatrics.

Dr Head enjoys playing tennis , mahjong and spending time with her husband and three dogs as they navigate an empty nest. Dr Head's youngest daughter has recently finished her freshman year at Clemson University and her oldest daughter is graduating from Wofford and entering Wake Forest University for graduate school.

Dr Head looks forward to meeting you and watching your family grow.