Meet Our Doctors

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Walter Long, D.M.D.

Dr. Walter Long is a native of South Carolina, born and raised in Columbia. Dr. Long completed his undergraduate studies at Wofford College in 1996 with a B.S. in Biology. He received a Doctorate of Dental Medicine from the Medical University of South Carolina in 2000 where he also completed a one year residency in Advanced Education in General Dentistry in 2001.

For his post-graduate studies, Dr. Long attended the University of Washington in Seattle for a two year residency in the specialty of Endodontics. He then started his private practice in Charleston in 2003.


Leigh O’Neal, D.M.D., M.S.

Dr. Leigh O’Neal was born and raised in Columbia, South Carolina. She attended Clemson University for her undergraduate education and received her Bachelor of Science in Health Science.  Dr. O’Neal pursued her dental training from Harvard School of Dental Medicine and graduated in 2018 as a Doctor of Dental Medicine. Following her dental school graduation, she completed a General Practice Residency at The Ohio State University where she gained experience in trauma and surgical procedures while caring for medically compromised, special needs, and pediatric patients.

Dr. O’Neal then entered the Advanced Endodontics Residency Program at The Ohio State University. This program provided her with extensive training in local anesthesia, trauma, vital pulp therapy, regenerative endodontics, surgical endodontics, and non-surgical endodontics.