Gregg Koval is an Endocrinologist in Atlanta, Georgia. Dr. Koval has been practicing medicine for over 42 years is highly rated in 3 conditions, according to our data. His top areas of expertise are Melorheostosis, Osteopenia, Melorheostosis with Osteopoikilosis, and Thyroid Nodule. Dr. Koval is currently accepting new patients.