GEM Obesity & Diabetes Surgery Centre is now the proud recipient of South India’s FIRST & ONLY Bariatric Surgery Centre of Excellence (COE).
Internationally renowned Prof.C.Palanivelu , a pioneer in the field of laparoscopy and robotic surgery started the department way back in 2002, proudly so as to say that GEM hospital was oneof the earliest hospitals in the country to start an exclusive bariatric surgery centre.
Dr. P. Praveen Raj is responsible for placing GEM Obesity and Diabetes centre as a centre of excellence globally. He and his team are credited with performing over 3000 bariatric surgical procedures.
Step into a realm of specialized care at GEM Hospital’s Medical Gastroenterology department, where our focus is on the meticulous diagnosis and treatment of digestive system disorders. Encompassing the stomach, intestines, liver, pancreas, and gallbladder, our comprehensive approach acknowledges the pivotal role of the digestive system in breaking down food for essential nutrients. From addressing common issues like malnutrition, weight loss, and gastrointestinal discomfort to tackling more complex challenges such as ulcers and cancer, our highly experienced gastroenterologists bring a wealth of expertise to the forefront.
Beyond diagnosis and treatment, our commitment extends to personalized care, empowering patients to manage symptoms and enhance their overall quality of life. GEM Hospital takes pride in delivering exceptional medical gastroenterology services, providing not just recovery but a journey towards lasting digestive well-being under the dedicated guidance of our skilled team.

Our mission

Our mission is to “holistically and safely approach to treat obesity and its associated disorders”. This is effectively done with our multi disciplinary team headed by Dr.Praveen raj. The team consists of Bariatric surgeons, Bariatric anaesthetist, bariatric nutritionist, Psycologist, physiotherapist, fitness trainer,intensivist,Physician, Cardiologist and a bariatric coordinator.

Our vision

Our vision is to ‘motivate and empower people in their fight against obesity’ by creating awareness, giving support and extending out our resources for effective coverage of affected people.

Our strengths

  • Patient first approach
  • High ethical values
  • Highest level of safety and professionalism
  • Empathy and kindness
  • Quality teamwork
Bariatric surgery(obesity treatment) is mainly for people who have a body mass index (BMI) of more than 30. This body mass index is the main criterion on which the eligibility of bariatric surgery is considered such as, 1. Patient has a BMI of 30-35 with serious health issues related to obesity, 2. Patient has a BMI of 35-40 along with serious health issues related to obesity (such as heart disease) and last 3. Patient has a BMI of 40 or more
The principle of this weight loss surgery is to confine the intake of food and drink and to limit the absorption of food in the intestine. This reduction of nutrients and calorie absorption enables the patient to lose weight. In this modern medical era, some teens and adults are potential patients for minimally invasive laparoscopic bariatric surgery. This is more advantageous than the other types of weight loss surgery options.
Laparoscopic Bariatric surgery (weight-loss surgery) includes a variety of procedures performed on people who are obese. This weight-loss operation proceeds by reducing the size of the stomach with an implanted medical device (gastric banding) or through the removal of a portion of the stomach (sleeve gastrectomy) or by resecting and re-routing the small intestines to a small stomach pouch (gastric bypass surgery).


A study done by the best bariatric surgeons of GEM Hospital on the effects of Sleeve gastrectomy and gastric bypass showed a three-fold improvement in the quality of life of patients following the procedure. Similar trends have been shown by different studies across the continents.
One more recent study done at GEM hospital on the impact of bariatric surgery on female reproductive health showed significant improvement in menstrual abnormalities associated with PCOD and primary infertility. The other benefits that have been noted include improvement in diabetes, hypertension, fatty liver disease, disease, sleep apnea, etc. This was predominantly done by our expert team of the best laparoscopic surgeons in Chennai.
bariatric surgery using the laparoscopy technique from Gem hospital, the best obesity surgery center in Coimbatore and Chennai not only helps in increasing the overall survival but the overall quality of life of an individual. In addition to providing a world-class obesity treatment in India, they have been performing the best weight loss surgery in Chennai. Bariatric surgery cost has been made affordable to the masses while also ensuring complete recovery with shorter hospital stays with definite results here.


Diabetes Surgery | Obesity treatment
Type 2 diabetes mellitus is an important component of metabolic syndrome which includes obesity, hypertension, and dyslipidemia. The concept takes its origin from Bariatric (also called Obesity surgery) which was initially intended to treat Obesity permanently.
This hormonal concept was further studied and the results have shown promising results in the control of diabetes even in patients using large doses of insulin and also inadequate control in spite of various medication usage. Hence this is ideally suited for those patients who want to get rid of their insulin shots and are also not able to achieve diabetes remission in spite of maximum medical therapy.
A recent Level I evidence that compared Bariatric surgery and medical therapy has clearly shown that surgery for diabetes provides the most effective diabetic control in the short and long term compared to medical therapy.
GEM Obesity & Diabetes Surgery Centre holds pride to have performed the largest number of such surgeries in Asia and is the only center experienced to perform all kinds of such operations including novel procedures like
  • Laparoscopic Duodenojejunal bypass,
  • Laparoscopic ileal Interposition, etc.

GEM Hospital offers a wide range of medical gastroenterology services, including

  • Diagnosis and treatment of all types of digestive disorders, including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), celiac disease, and GERD
  • Endoscopic procedures, such as colonoscopy and esophagogastroduodenoscopy (EGD)
  • Liver and pancreatic disease management
  • Nutritional counseling
  • Cancer screening and prevention

The benefits of gastroenterology care at GEM Hospital

  • We offer a wide range of services, so you can get all of your gastroenterology care in one place.
  • Our team of gastroenterologists are highly experienced and skilled in the latest diagnostic and treatment techniques.
  • We use state-of-the-art equipment and facilities.
  • We are committed to providing our patients with personalized and compassionate care.
When experiencing symptoms of a digestive disorder, it is important to consult a gastroenterologist for diagnosis and treatment. GEM Hospital is a leading provider of medical gastroenterology services, and we are committed to providing the best possible care to our patients. So, book a consultation today for a healthy tomorrow.


MS, MCh, DNB, FACS, FRCS(Hon) Ed.,
  • Chairman – GEM Hospital and Research Centre
  • Professor & Director – Institute of Gastroenterology & Minimal Access Surgery
  • Managing Trustee – GEM Digestive Diseases Foundation – Charitable Trust


Director Senior Consultant in BARIATRIC Surgeryy


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