She attended medical school at Western University of Health Sciences, College of Osteopathic Medicine of the Pacific. Her training includes a residency program at Adventist Hinsdale Hospital. Areas of expertise for Dr. Hephner include diabetes, hypertension (high blood pressure), and preventive care. She takes several insurance carriers, including Aetna EPO, Blue Cross/Blue Shield, and Coventry. Dr. Hephner's hospital/clinic affiliations include Northwestern Medicine Central DuPage Hospital and Northwestern Medicine Regional Medical Group. She has an open panel.