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Office and Staff
Charles D. Callery, M.D., F.A.C.S.
Dr. Callery is a General Surgeon, certified by the American Board of Surgery, and a Fellow of the American College of Surgeons. He specializes in metabolic and bariatric surgery. He has been performing gastric bypass and lap band for patients with severe obesity since 1991. Dr. Callery is a member of the American Society for Metabolic and Bariatric Surgery (ASMBS) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES). He serves as Chief of Staff - elect at Pomerado Hospital. He operates at Pomerado Hospital, Poway and Sharp Memorial Hospital, San Diego.
Sam Filiciotto, M.D., F.A.C.S.
Dr. Filiciotto is a General Surgeon who assists Dr. Callery in surgery. He trained at the University of Iowa and New York Medical College. He performs hernia repair, laparoscopic gall bladder removal, and other abdominal and breast surgical procedures. Dr. Filiciotto is fluent in Spanish. His phone number is 858-487-8741.

Tory Boyle, FNP-C

Tory is our nurse practitioner. She sees patients for their first visit, coordinates care, assists Karen and Dr. Callery in the office, and provides medical perspective for the support groups. She received her nursing degree from Saddleback College, her Bachelor of Science from the University of the State of New York, and her adult and pediatric Nurse Practitioner Masters degree from Cal State Long Beach in 1996. Tory has a background in emergency medicine, Life Flight, family practice, and currently works for Arch Health Partners in urgent care and for our practice.

Lisa Haas, RMA
Lisa is our office manager. She attended Fullerton College and then received her Medical Assistant certificate from Concorde Career Institute, Garden Grove in 2000. She joined Dr. Callery's practice in March 2003 with 2 years of experience in internal medicine and cardiology. She manages operations, patient financial matters, and coordinates relations with health plans.

Karen Merdinger, R.D.
Karen is our Registered Dietician having joined the practice in 2008. She received her BS in Foods and Nutrition from San Diego State University as well as her BS in Business Administration from the University of Montana. Karen completed her dietetic internship through the master’s program at the University of Nevada. She is a member of the American Dietetic Association. Karen is a regular contributor to

John Callery
Mr. Callery is the director of Thinner Times Forum, an international online community that supports bariatric patients by facilitating peer-to-peer communication. Thinner Times Forum has more than 35,000members, over 1,000,000 threaded posts, and receives approximately 750,000 hit/month.

He received his bachelor’s degree in business administration from the University of San Diego in 2008, with an emphasis in marketing and development.


# Article Title
1 Gastric Bypass and Lap Band Surgery Work Up Steps
2 Dr. Callery's CV
3 Bariatric Surgery Center of Excellence
4 Privacy Policy
5 Directions & Maps
6 Welcome to ThinnerTimes!