Our Doctors

Barlow Pulmonary Medical Group

Main Campus

David R. Nelson, M.D. Medical Director, Internal Care

Dr. David R. Nelson has served on the hospital's medical staff since 1991. A board-certified pulmonologist, he provides clinical management oversight for critically ill patients and the staff caring for them. Dr. Nelson's expertise in critical care and pulmonary medicine includes the diagnosis and treatment of lung diseases of many types and severity.

Dr. Nelson practices full-time at Barlow's Main Campus in Los Angeles and also oversees care given at Barlow's satellite facilities at Presbyterian Intercommunity Hospital (PIH) in Whittier and Valley Presbyterian Hospital (VPH) in Van Nuys.

Scott A. Sasse, M.D.

Medical Director, Utilization Review

Medical Director, Respiratory Therapy

Azmy Ghaly, M.D.

Medical Director, Wound Care

Nancy E. Waters, M.D.

Medical Director, Infectious Diseases


Nadeem A. Chishti, M.D.

Medical Director


Jerrold S. Dreyer, M.D.

Medical Director

Suman N. Patel, M.D.

Medical Director

Nachemia Peleg, M.D.

Medical Director