According to the American Society for Bariatric Surgery and the National Institutes of Health, Roux-en-Y gastric bypass is the current gold standard procedure for weight loss surgery.
Sleeve gastrectomy, also called Gastric Sleeve or Vertical Gastric Sleeve (VGS) is a restrictive bariatric surgery. 
The LAP-BAND® System consists of an adjustable lap band designed to help you lose excess body weight, improve weight-related health conditions and enhance quality of life. The laparoscopic adjustable gastric banding reduces the stomach capacity and restricts the amount of food that can be consumed at one time....
In certain occasions we offer a revision operation for patients who had LAP-BAND or gastric bypass surgery and were not able to lose significant weight. 
Today 97 million Americans, more than one-third of the adult population, are overweight or obese.
Welcome
Dear Patients, Friends, and Colleagues:
You may have already heard that I am closing down my office on July 1, 2011. I have accepted a position as the head of the Center for the treatment of morbid obesity at the Chaim Sheba Medical Center (http://eng.sheba.co.il/) at Tel Hashomer, in Israel. Adjacent to Tel Aviv, it is the most comprehensive medical center in the Middle East, renowned for its leading-edge medicine. Tel Hashomer is the largest hospital in Israel and one of most advanced in the world. It is also a sister hospital to the MD Anderson Cancer Center and has exchange programs with other hospitals in Houston. I will be in charge of the surgical and medical treatment of morbid obesity. I will take part in advanced minimally invasive surgeries, coordinate research, and explore new frontiers in the field.
My family and I love Houston and its wonderful people. The decision to accept this new position and move back to Israel has not been easy for us, but we now recognize that it is a move we must make at this point in our lives.
I have arranged with my colleagues, Dr. Terry Scarborough and Dr. Sherman Yu at Texas Laparoscopic Consultants (http://www.tlcsurgery.com/), located on the 9th floor in the same building as my office, to accept my patients and respect, in full, all previous arrangements my patients and I had. I have complete confidence in these excellent surgeons and I know my patients will find a great practice there to continue their care.
My office manager, Brenda, is staying at least until the end of this year to facilitate patients’ transition to their new practice.
If you would like to reach me, please call Brenda or look for me on Facebook (details will be posted later).
Below please find Texas laparoscopic Consultants letter.
Sincerely,
Hadar Spivak, MD
Dear Dr. Spivak's Patients,
We will miss Dr. Spivak as much as many of you will as well. His departure will leave a void in the Houston Bariatric Community, as he is a well respected and influential surgeon in this field. However, we understand and respect his desire to pursue an academic career in one of the top medical centers in the Middle East. The Chaim Sheba Medical Center is very lucky to have him.
For the last 3 years, since moving on from the University of Texas-Houston medical school, we have developed a comprehensive weight loss surgery center here at Park Plaza. Over the course of that time, we have often helped cover Dr. Spivak's patients and in fact have likely seen some of you already as patients. Texas Laparoscopic Consultants is looking forward to extending our complete care to all of Dr. Spivak's patients, and we will continue to respect the previous arrangements that you may have made with his office as well. To this end, we are excited to have Brenda in our office to help with this transition.
Please feel free to call us at 713-493-7700 to arrange for your appointment today and to answer any questions that you may have. For more information about Drs. Sherman Yu and Terry Scarborough please go to www.tlcsurgery.com.
Sincerely,
The Team at Texas Laparoscopic Consultants
1200 Binz St. #950
Houston, TX 77004
Hadar Spivak, MD, FACS, specializes in advanced laparoscopic weight-loss procedures such as the Roux-en-Y gastric bypass, the LAP-BAND® System, and the gastric sleeve. Dr. Spivak has performed thousands of laparoscopic bariatric procedures and his weight loss surgery practice in Texas is designated as "a center of excellence" by the American Society for Metabolic and Bariatric Surgery (ASMBS). Dr. Spivak offers a personal commitment and an unparalleled record.
Owing to Dr. Spivak's experience in weight loss procedures, he is one of the few surgeons in the US chosen to be part of an FDA trial evaluating the efficacy and safety of the LAP-BAND device. He is the first surgeon to perform the LAP-BAND procedure in Texas and one of the few pioneers in laparoscopic Gastric Bypass and Gastric Sleeve in the country. 
Dr. Spivak's office is located at
Park Plaza Hospital Medical Bldg
1200 Binz, Suite 1470, Houston, TX 77004
Tel. (713) 520-8900 or
Fax. (713) 520-8905
Dr. Spivak has extensive experience in advanced weight loss procedures and his credentials speak for themselves. Whether it is the LAP-BAND System, Roux-en-Y gastric bypass, Gastric Sleeve or revision surgery, Dr. Spivak will help you determine the ideal weight loss procedure for you to reach maximum health and well-being.
Dr. Spivak has his own surgical team and only uses the best anesthesiologists for his patients. Surgery for weight loss is performed in Houston at Park Plaza Hospital. In addition to advanced surgical procedures, Dr. Spivak and his team offer post-operative care and a comprehensive program for bariatric patients including in-office fluoroscopy for immediate diagnosis and detailed follow up.
Dr. Spivak completed General Surgery residency at Mt. Sinai Hospital and Beth Israel Medical Center in New York. After completing two exclusive fellowships – one in Surgical Endoscopy at Beth Israel Medical Center and the other in Laparoscopic (M.I.S) Surgery at Emory University Hospital in Atlanta –he went on to direct the Advanced Laparoscopy Unit at Rabin Medical Center, Israel. He moved to Houston, Texas, in 1999 and established a practice dedicated to the surgical treatment of obesity.
Board certified by the American Board of Surgery and a fellow of the American College of Surgeons, Dr. Spivak’s work has been recognized internationally. He has received awards and distinctions for his contributions in furthering the field of minimally invasive surgery. He teaches advanced surgery to surgeons from the US and abroad. He also participates in several professional societies such as the Society of American Gastrointestinal Endoscopic Surgeons (SAGES), the American Society of Bariatric Surgery (ASBS), and the Society for Surgery of the Alimentary Tract (SSAT). Dr. Spivak is well published and has presented his laparoscopic achievements in many scientific meetings. He is a reviewer for scientific publications such as Surgical Endoscopy, Journal of the American Medical Association (JAMA), and Obesity Surgery.
“I began surgical residency in 1990 when the laparoscopic field and techniques were just introduced in the U.S. During my residency and fellowships in New York and Atlanta, I had the opportunity to be trained with some of the best laparoscopic surgeons in the U.S. I became convinced that laparoscopic surgery is superior to traditional open surgery and now I perform all my procedures using this method. For the last 12 years I made a commitment to specialize in the surgical treatment of obesity, providing optimal care for my patients before, during and after surgery."