The Best Bariatric Surgeons - Sage Bariatric
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Picture of Dr. Allen Alvares, Dr. Sonny Cavasos and Dr. John J Gonzalez

Write us a comment below about surgeons John J. Gonzalez, MD,  Ramiro “Sonny” Cavazos, MD, and John Pilcher, MD. They continue to help others live a good and healthier life.  I am bariatric surgeon Dr. Allen Alvarez and I write to you the following introduction to let you know that I have worked with numerous surgeons from all over the world. I tell you this because it puts me in a position of tremendous amount of credibility to know that these are among the best bariatric surgeons.

Picture of Dr. Allen Alvarez, Dr. Sonny Cavazos and Dr. John Gonzalez - best bariatric surgeons

I have gained an exceptional and world travelled experience in medicine since the end of the 1980s when I began my training as an Emergency Medical Technician.  I started in Brownsville, Texas where this border town with Mexico was a place of nonstop EMS action.  I then earned my degree at the University of Incarnate Word in San Antonio, Texas and continued my emergency medicine experience in emergency rooms throughout Hawaii, Florida and Texas. Throughout these experiences, I continued to nurture a passion for medicine as I continued to train in some remote locations.   The ancient mayan state of Chiapas taught me the value of surgical obstetrics.  The beautiful back country of Baja California and the busy streets of Guadalajara enhanced my surgical experience in areas such as plastics, pediatrics and orthopedic surgery.  I was able to bring back this wealth of experience in 2003 when I landed in Manhattan.   A melting pot of surgeons in New York City molded my general and trauma surgery skills until 2009.  Six years ago, I returned full circle to San Antonio to further my career in advanced laparoscopic, minimally invasive surgery and bariatrics.   So, again, I tell you this to assure you that I am extremely confident to know that I am working side by side with the finest and best bariatric surgeons in San Antonio, Texas.


To start the lineup is  John J. Gonzalez, MD.  His technical skills are flawless making him an exceptional surgeon! I know him to not only be technically excellent, but also to have sound judgement in the operating room.   He works with a profound sense of humor and amazing loyalty that is well respected by our medical community.  Dr. Gonzalez completed his training in Harvard University/Massachusetts General Hospital. He received advanced laparoscopic training under the tutelage of world-renowned laparoscopic surgeon Dr. Morris Franklin at the Texas Endosurgery Institute.  I sincerely feel more confident knowing he is in my corner as we work together.  As you already know, I have worked with and known many surgeons and that is why I know Dr. Gonzalez is one of the finest and best bariatric surgeons in San Antonio, Texas!

Next, Dr. Ramiro “Sonny” Cavazos who in my opinion is among THE PREMIER and BEST BARIATRIC SURGEONS all around.  While Dr. Gonzalez continued his training in Bariatric Surgery several years after his time at the institute,  he and Dr. Cavazos solidified a strong partnership.   Dr. Cavazos learned bariatric surgery by the one and only Alan Wittgrove, MD in California.  Dr. Wittgrove pioneered the very first series of laparoscopic weight loss surgery in the early 90’s forever changing the course of bariatric surgery by making it a safer and more effective operation.  They shared an extremely amicable relationship with a sincere respect for their operative ability.  Dr. Wittgrove would refer to Dr. Cavazos as having one of the strongest work ethic he had ever seen which proved to him why so many patients and fellow staff members adored and loved Dr. Cavazos.  It was a difficult choice when he turned down an offer to be a staff surgeon at the prestigious Wittgrove clinic and to be working along side the former president of the American Society for Metabolic & Bariatric Surgery.  It was about ten years ago that Dr. Cavazos and his wife Dr. Monica Anz-Cavazos moved away from California and the Wittgrove team to face a new and challenging life together in San Antonio.   They combined the expertise of internal medicine and bariatric surgery and crowned the name Texas Center for Medical & Surgical Weight Loss which now lives under the website  I have learned an invaluable amount from the husband and wife team, and I have grown to know that Dr. Cavazos is truly among the BEST BARIATRIC SURGEONS in San Antonio, Texas.

Profile picture of Dr. John Pilcher - best bariatric surgeonsThat brings me to John Pilcher, M.D.  Hands down, Dr. Pilcher is the MOST RESPECTED and MOST KNOWLEDGABLE bariatric surgeon.   This former Air Force soldier completed his surgery training in Virginia, and then settled in San Antonio where he has been performing bariatric surgery since 1995.  What impresses me the most about my partner in the operating room is that his passion for teaching is unsurpassed!  He values education like no other! And he has an attention to detail that is exceptional.  I have worked in numerous different hospitals all over the world and I’ve worked along side a significant amount doctors and surgeons.   I truly believe that working side by side Dr. Pilcher ultimately leads to healthier and more successful patients all around.

I am very proud to say that Dr. Pilcher, Dr. Cavazos and Dr. Gonzalez are among THE BEST BARIATRIC SURGEONS!

I feel an incredible sense of honor and pride to be able to work side by side with these amazing surgeons.  It really has me feeling BLESSED!

Allen A. Alvarez, MD Bariatric Surgeon at

would love to hear from you below!

CategoryOur Team
  1. August 18, 2015

    This is an amazing article Dr. Alvarez! I completely agree with you that you are amongst the best Bariatric Surgeons! Not only are you all great at what you do, you 4 surgeons truely love what you do and it shows. You treat your patients with kindness and most respect! Thanks to Dr. Gonzalez and Dr. Cavazos and the entire staff I was am able to enjoy my life and live a healthier one. Always grateful to you. Christina Eguia

  2. August 19, 2015

    Each of these brilliant, compassionate surgeons have touched my life personally and professionally. The surgeons and Dr. Monica Anz-Cavazos are completely dedicated to changing lives through their comprehensive, multi-disciplinary medical and surgical weight loss program. Dr. Pilcher loaned me surgical journals to write papers in graduate school on the psycho-social aspects of Bariatric surgery, long before addressing the psycho-social aspects of obesity was popular! Dr. Cavazos, Dr. Gonzalez, and Dr. Alvarez all give freely of their time to speak to patients at conferences and seminars. I would recommend this team to anyone interested in seeking care for morbid obesity. They will stand with you and guide you through an amazing journey to a healthier life.

    • August 26, 2015

      Cyndi, You HELPED me make the TABS patient conference in San Antonio last year a wonderful success. So I thank YOU for ALL that you do for the Texas Association for Bariatric Surgery. I am SO LOOKING FORWARD to being a keynote speaker at the next conference for patients. EVERYONE should attend this amazing conference and I am hopeful we will have a date for that patient conference soon.

  3. August 19, 2015

    I have been fortunate to work with all of these surgeons. Dr pilcher I was in the military with and is by far a awesome surgeon. Sonny is what can can I say the most down to earth truly cares for his pts bed side manner is fabulous. Dr jj gonzalez. He is beyond words a great surgeon. If you met him on st. You would never know his profession. I have personally had him treaty own finds and family. He is not only your dr. He is your friend. You could never go wrong with anyone one of these surgeons. I being in the medical field for 21 years. Would let all of these guys operate on me or my family. Much love and success to you all.

    • August 26, 2015

      Great comments Kelly!!! So true about Dr. Pilcher – he is hands down the BEST. Sonny is extremely well grounded and like I wrote in the article, “patients and fellow staff members adore and love Dr. Cavazos.” AND Dr. John J. Gonzalez is simply the coolest! Most of all, THANK YOU for your trust in us.

  4. August 19, 2015

    Hands down after hearing each one of them speak. That is truly the surgeon you get. These surgeons care about their patients. You guys are amazing.

  5. August 19, 2015

    Hi, my name is Laura I live in ok ..mother of 5.. I’m dietetic and out of control .. I’m 5,2 inches tall and my weight is 248 ,and I want to say that I ready want to do something like this … The cost be a issue for me … I have Medicaid but it does not pay for this … I want to do this for my childern live longer and healthy for them ..but all of that I also want to do it for much is this on cash on hand .. Thank you .. For your time reading this ..

    • August 26, 2015

      Laura, I understand how hard it must feel to hear what you are going through right now – especially as you think about how this may all affect your children. I think reaching out to us is a great step in the right direction. We would love to send you a private message via your email, if that is ok?

  6. August 19, 2015

    I would agree with Dr. Allen that the team of doctors are The Best Bariatric Team. I would include Dr. Alvarez is an integral part of the team! I feel blessed to have had Dr. Cavazos to have performed my surgery in August of 2007. Eight years and counting, I just celebrated my 100 pound plus weight loss success!! Yes, it does work when you use the tool you were given. I feel blessed and grateful to my Dr.’s Sonny Cavazos and his wonderful wife Dr. Monica Anz-Cavazos who helped me tremendously when I had my surgery eight years ago! THANK YOU!

    • August 26, 2015

      Thank you so much Kathi! I agree wholeheartedly that Dr. Cavazos and his wife Dr. Anz-Cavazos are a tremendous team and do so much for their patients – truly wonderful. Thank you for including me in your comment and keep up the hard work of being healthy – mind, body, AND soul.

  7. August 29, 2015

    Dr. Allvarez, saved my life. I met Dr A when my Aunt was in the ER. Dr. A came out to introduce himself to the family. I was so amazed by his concern and in his manners n by how he treated the family. So after years of my own surgeries due to hernias n sometimes 2x year n being in n out of the hospitals due bowel obstructions, I went for the sleeve surgery n it has been the best decision that I made in 2014. It was hard in the beginning but its all been worth it. I feel 100% better, I am able to do so much more n not get tired. I wish I would have meant him sooner, so if anyone is thinking about having the surgery do it. You are in very good hands with Dr A n his staff.
    Mary Alice Danysh

    • August 29, 2015

      Thank you so much for the comment! I remember that day after your aunt’s surgery during my emergency room night call. Working for emergency rooms all over San Antonio is such a challenging experience and sometimes very hard on all our families. So I would like to give thanks to all my fellow general surgeons that cover the ER’s like Mission Trail, Downtown Baptist, NorthCentral, Methodist, Christus and the numerous SATELLITE ER’s across our region (like the ones you now see EVERYWHERE). Being a general surgeon on call in San Antonio is often thankless and very very underpaid! So your comment IS VERY APPRECIATED – Thank you

  8. December 29, 2016

    I have known Dr. Allen Alvarez since before he was DR. Alvarez. I never thought I would come under his care as a patient until I found that my health and my life were suffering as a result of my weight. In his clip he talks about a “leap of faith”. It truly is. After I had researched and thought about it, I took the leap of faith almost three weeks ago. I’m coming along well and I think that a great part of that is knowing that Dr. Amen is in my corner as well as his highly competent staff. I love that each day I am fitting more comfortably in smaller clothing and that my knees are not complaining so much! GOD bless Dr. Alvarez and the team!

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