Meet the BMI Team

The multidisciplinary bariatric team at UC San Diego Health — which includes nationally and internationally recognized surgeons, physicians, registered nurses, program psychologist, registered dietitians, patient advocates and support staff — is dedicated to helping you lose weight and restore your health through comprehensive, personalized care.

Meet Our Medical Team
Weight Loss Surgeon, Santiago Horgan, MD

Santiago Horgan, MD
Director, Bariatric and Metabolic Institute
An internationally recognized expert in esophageal disease, bariatric surgery, and new technologies for minimally invasive, surgical approaches, Dr. Horgan provides patients with faster recovery and less scarring.

See a list of Dr. Horgan's publications at

Weight Loss Surgeon, Eduardo Grunvald, MD Eduardo Grunvald, MD
Director of Weight Management Program
Dr. Grunvald is integrally involved with managing surgical and nonsurgical weight loss efforts, and assesses patients before surgery to evaluate existing comorbidities.
Weight Loss Surgeon, Garth Jacobsen, MD Garth Jacobsen, MD
Bariatric Surgeon
Director, UCSD Hernia Center
A specialist in gastric banding, Dr. Jacobsen was closely involved with the FDA trials for the approval of the Lap-Band system. 

See a list of Dr. Jacobsen's publications at


Allied Health Professionals
Mary Kirk
Nurse Practitioner
Mary is a nurse practitioner who specializes in caring for bariatric patients. She provides patient education and medical care before and after surgery.

Jill Fisher, MS, RD
Registered Dietitian
Jill is the BMI dietitian and works with patients to help them through the pre-op and post-op phases of diet and meal planning, as well as providing healthy eating tips to help maximize success.


Weight Management Coordinators
Cheryl Singer Sheryl Singer
Health Educator
Sheryl has over 10 years as a clinical nutritionist and has helped hundreds of people lose weight and keep it off long-term. She helps patients improve chronic conditions such as diabetes and high cholesterol.

Jeanette Limcolioc Jeanette Limcolioc
Program Nurse
Jeanette is a registered nurse with a special focus in disease prevention through weight management. She works closely with patients to achieve their weight-loss goals.