Meet Our Surgeons

Charles Callery, Medica Director, Bariatric Center at Pomerado Hospital, Poway, North San Diego County

Charles D. Callery, M.D., F.A.C.S.

Medical Director 

Dr. Callery is a General Surgeon specializing in weight loss surgery. As Medical Director, Dr. Callery provides clinical oversight and leadership at Palomar Medical Center Poway for our Bariatric Surgery Center of Excellence. He is certified by the American Board of Surgery and a Fellow of the American College of Surgeons. Since 1991, Dr. Callery has been performing bariatric surgery for patients with severe obesity.

He is a member of the American Society of Metabolic and Bariatric Surgery (ASMBS) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES).

"I find helping obese patients achieve a more normal and healthier life both technically challenging and personally rewarding. Obesity surgery is one of the most optimistic specialties of medicine." 

Sam Filiciotto, M.D.

Dr. Filiciotto is a General Surgeon assisting Dr. Callery with bariatric surgery. He trained at the University of Iowa and New York Medical College. Dr. Filiciotto is fluent in Spanish.

Ramin Sorkhi, M.D., F.A.C.S.

Dr. Sorkhi completed his residency in general surgery at Albert Einstein College of Medicine in New York, followed by an accredited fellowship in advanced laparoscopic surgery and bariatric surgery at Sinai Hospital in Baltimore. 

He is a board certified surgeon specializing in minimally invasive laparoscopic abdominal surgery.  He is a fellow of the American College of Surgeons, a Member of the Society of American Gastrointestinal Endoscopic Surgeons, and a Member of the American Society of Metabolic and Bariatric Surgery.



Meet Our Team

Florence Tai, RN, BSN, CBN

Bariatric Clinical Coordinator

Florence coordinates your surgical process with the hospital. She is a certified bariatric nurse and is available as a patient resource throughout your weight loss surgery journey with us. 


Karen Merdinger, RD

Registered Dietician

Karen provides specialized dietary support and education during your weight loss surgery journey.

Jim Wilkerson, RN, BSN, MHA, CCRN

Manager, Perioperative Services




Do you have questions about the Bariatric Center at Palomar Medical Center Poway in North San Diego County? For more information please visit our Surgical Procedures page, Contact Us or Find our Location(s).

ASMBS Center of Excellence