Meet Our Doctors

Michal Baird, MD

Dr. Baird has been on staff since 2003. She graduated from the Medical University of South Carolina and completed her residency training in Worcester, Massachusetts in 1982. Dr. Baird is board certified in emergency medicine. She has a great passion for helping her patients develop healthy eating habits, engage in moderate exercise and achieve their weight loss goals.


John Parker, MD

Dr. Parker graduated from the Medical University of South Carolina, served 25 years in the U.S. Army and retired at the rank of Colonel. He has been part of the Metabolic Medical staff since 2005. Dr. Parker is board certified in General surgery. He is dedicated to helping people manage their weight so they can lead happy, healthy, productive lives.


Jane L. Tyler, MD

Dr. Tyler graduated from Georgetown University and completed her residency at the Medical University of South Carolina. She attended Vanderbilt University and McGill University for fellowship programs and was on staff at the McGill University Hospital. Dr. Tyler cares deeply about preventative medicine and she uses Metabolic Medical Center's proven weight loss programs to change patients' lives.


G. Dennis Vaughan III, MD

Dr. Vaughan graduated from the University of Virginia School of Medicine. He completed his residency at the Baylor College of Medicine for general surgery and the Medical University of South Carolina for thoracic surgery. There are 28 publications to his credit concerning general and cardiovascular surgery. Dr. Vaughan joined the staff in 2006 after watching his wife and daughter achieve excellent results with the Metabolic Medical Center program.


Peter Zvejnieks, MD

Dr. Zvejnieks (Dr. Z) attended the Medical College of Georgia and completed his residency in pathology at the University of Colorado Health Sciences Center. He is board certified in anatomic and clinical pathology as well as dermatopathology. Dr. Z strives to help each patient understand their fastest road to healthy weight loss. Interpreting your test results and designing the ideal program for you is his number one goal.