Find A Doctor

Ramiro "Sonny" Cavazos, M.D., F.A.C.S., F.A.S.M.B.S.
Medical Director

Dr. Ramiro “Sonny” Cavazos received advanced fellowship training in weight-loss surgery at the prestigious Wittgrove Bariatric Center under the guidance of world renowned surgeon and past president of the American Society for Bariatric Surgery, Dr. Alan Wittgrove of San Diego, California. Dr. Cavazos is the Medical Director of Bariatric Surgery at Northeast Baptist Hospital in San Antonio.

Dr. Cavazos received his undergraduate degree at the University of Texas at Austin. He attended medical school at the University of Texas at Houston. His residency in general surgery was completed at Exempla Saint Joseph Hospital in Denver, Colorado. He then began fellowship training in San Diego. Dr. Cavazos is a board certified surgeon with the American Board of Surgery and a member of the American Society for Bariatric Surgery. Read More

Frank "Terive" Duperier, M.D., F.A.C.S.

Frank "Terive" Duperier, M.D, one of a select group of highly-skilled San Antonio bariatric surgeons, has years of experience in advanced laparoscopic and bariatric surgery including REALIZE Band, Allergan LAP-BAND, Sleeve Gastrectomy, Laparoscopic Gastric Bypass, and Revisional weight loss surgery procedures.

Dr. Terive Duperier obtained his fellowship training at the world-famous Cleveland Clinic Foundation in Cleveland, Ohio. This is the highest level of surgical training one can complete. He has a very broad experience in many advanced laparoscopic procedures including: laparoscopic weight loss surgery, anti-reflux surgery, and endocrine surgery. He also completed a Mini-Fellowship in Endocrine Surgery at the Cleveland Clinic. Read More

John J. Gonzalez, Jr., M.D.

John J. Gonzalez, Jr., M.D. was born and raised in San Antonio, Texas and attended Central Catholic High School. He received his Bachelor of Science degree from Stanford University. He then attended The College of Physicians & Surgeons at Columbia University where he was awarded his Medical Degree. His residency in General Surgery was completed at Harvard University/Massachusetts General Hospital. Dr. Gonzalez received advanced laparoscopic training under the tutelage of world-reknowned laparoscopic surgeon Dr. Morris Franklin at the Texas Endosurgery Institute.

During his 2-year fellowship at TEI, he received additional training at the Institut de Recherche Contre les Cancers de l’Appareil Digestif, a minimally invasive surgery center in Strasbourg, France. He also studied foregut and weight loss surgery at the Wakefield Clinic under Dr. Richard Stubbs in Wellington, New Zealand. Read More

Carlos G. Martinez, MD

Carlos G. Martinez, MD, received his advanced fellowship training in weight loss and minimally invasive surgery at the top ranked Baylor College of Medicine, the Michael E. DeBakey Department of Surgery in Houston, Texas.

At Baylor, Dr. Martinez presented current research and numerous papers to national society meetings including the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), American Society for Metobolic and Bariatric Surgery (ASMBS), and the American College of Surgeons (ACS). He has extensive experience in many general surgery laparoscopic techniques and weight loss surgeries and specializes in laparoscopic gastric bypass, sleeve gastrectomy, Lap Band®, and revisional bariatric procedures. Read More

Michael V. Seger, M.D., F.A.C.S

A native of Lubbock, Texas, Dr. Michael V. "Mickey" Seger attended college at The University of Texas at Austin, where he received a bachelor of arts in zoology. Upon graduation, he moved south to San Antonio to attend medical school at the University of Texas Health Science Center. He completed residency training at the Texas Tech University Health Sciences Center. Dr. Seger completed an advanced laparoscopic fellowship at the University of Texas HSC Houston under the guidance of Philip L. Leggett, M.D.

In July of 2004, the Seger family moved back to San Antonio to join New Dimensions Weight Loss Surgery where he served as president in 2007. With the addition of their twin girls in October 2007, Dr. Seger and his wife Jennifer are the proud parents of five children.

Dr. Seger founded the Minimally Invasive Surgeons of Texas advanced laparoscopic and bariatric surgery training program in San Antonio, where surgeons from around the country come to learn these highly specialized procedures. He is a national proctor for Ethicon Endosurgery traveling around the country teaching surgeons how to place and manage the REALIZE Band. Read More


Please call 210 297-1055 to schedule an appointment .

Physicians are members of the medical staff at one or more of Baptist Health System's affiliated hospitals. However, these physicians are independent contractors who are neither employees nor agents of those hospitals or of Baptist Health System and, as a result, none of these hospitals nor Baptist Health System is responsible for the acts of these physicians in their medical practices.