Physicians and Staff

Duke Weight Loss Surgery brings together surgeons, nutritionists, psychologists, and a support staff committed to helping you achieve your weight-loss goals and ensure a safe and successful pre- and postoperative experience.

Click a name to learn more about a physician, nurse, program coordinator, or insurance specialist who offers weight loss surgery services.

Appointment Telephone
919-660-2229

Katherine L. Applegate, PhD

• Psychiatry and Behavioral Sciences / Medical Psychology

Appointment Telephone
919-660-2229

Eric J. DeMaria, MD

• Surgery / General Surgery

Appointment Telephone
919-660-2229

Kelli E. Friedman, PhD

• Psychiatry and Behavioral Sciences / Medical Psychology

Appointment Telephone
919-660-2229

Dana D. Portenier, MD

• Surgery / General Surgery

Appointment Telephone
919-660-2229

Aurora D. Pryor, MD

• Surgery / General Surgery

Appointment Telephone
919-660-2229

Ranjan Sudan, MD

• Surgery / General Surgery

Appointment Telephone
919-660-2348

Alfonso Torquati, MD, MSci

• Surgery / General Surgery

Nutritionist

• Patrick Mahaney, RD, LDN
• Elizabeth Keenan, RD

Nurse Practitioners

• Hilary Blackwood, NP
• Deborah Brown, RN, FNP-C

Nurses

• Mary Whitman, RN
• Frances Kovens, RN, MSN, CNOR

Anesthesiologists

• Edward G. Sanders, MD
• Ruth E. Long, CRNA