Meet the Doctor

Sonya Leigh Merrill, MD, PhD, is on the active medical staff at 2 hospitals, Texas Health Presbyterian Hospital of Dallas and Medical City Dallas. She is board certified in internal medicine and sleep medicine.

Dr. Merrill graduated from Wellesley College and completed Master of Arts and Doctor of Philosophy degrees at the University of London. She graduated from Harvard Medical School and did her internal medicine residency at Texas Health Presbyterian Hospital of Dallas. She also received fellowship training in sleep medicine at University of Texas Southwestern Medical School.