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Praveen Raj



  • MBBS PSG Institute Of Medical Sciences and Research, Coimbatore, India
  • MS(General Surgery) Sri Ramachandra University, Chennai, India
  • DNB(General Surgery) Diplomate in National Board in General Surgery
  • DNB(Surgical Gastroenterology) Diplomate in National Board in Surgical Gastroenterology
  • Fellowship in Bariatric Surgery John Flynn Hospital, Tugun, Australia; Weill Cornell University, NYC, US
  • Ph.D Doctorate in Bariatric Surgery. First in Asia
  • FACS Fellow of the American College of Surgeons
  • FALS Honorary Fellowship in Advanced Laparoscopic Surgery by Indian Association of Gastrointestinal Endosurgeons (IAGES)
  • FMAS Fellowship in Minimal Access Surgery by the Association of Minimal Access Surgeons of India(AMASI)
  • FICS Fellow of the International College of Surgeons
  • FIBC Fellow of International Bariatric Club


    Consultant & Head
  • Dept of Minimal Access Bariatric & Robotic Surgery,
  • Department of Surgical Gastroenterology,
  • Gem Hospital & Research Centre, Coimbatore, India


  • President – International Excellence Federation for Bariatric Surgery (India Chapter)
  • Honorary Secretary – Obesity Surgery Society of India
  • Convener – Healthcare – Confederation for Indian Industries (Coimbatore)
  • Executive Member – Healthcare – Confederation for Indian Industries (Tamil Nadu)
  • Executive Member – Association for Healthcare providers of India (Tamil Nadu Chapter)
  • Program Committee Member – Asia Pacific Bariatric & Metabolic Surgery Society Congress – Japan 2018


  • Only Doctorate in the field Bariatric Surgery in Asia
  • Editor in Chief – “Bariatric Surgery Practice Guide “ by Springer, first of its kind from India.
  • International Centre of Excellence (ICE) in Bariatric Surgery (Surgeon/ Department) by Surgical Review Corporation,USA,2012
  • Member-lnternational Excellence Federation (Taiwan)- Only recognized training center and surgeon for Bariatric Surgery
  • First and Only International Center of Excellence and International Excellence Federation member in South India.
  • Organising Secretary LAPAROFIT 2010/2011/2013/2014, 2015 3rd, 4th, 5th, 6th & 7th International Conference & Live workshop on Bariatric & Metabolic Surgery, Which is the most popular conference for Bariatric Surgery in India
  • LAPAROFIT 2010-1“ Conference in the world to be done completely in High Definition mode from a venue of >500 kms
  • LAPAROFIT 2014 – 1st complete web conference in the world with 20 speakers around the globe & 900 delegates
  • Vocational Excellence Award – Honored with “Vocational Excellence Award” the highest honor from Rotary
  • Training Programs – Course convenor of >10 Bariatric hands on training programs & 8 Webcast programs having trained >200 Surgeons
  • First surgeon to perform Single Incision Laparoscopic gastric bypass in the country
  • Largest series of Single Incision laparoscopic gastric bypass performed in the country
  • Live Teleconference – Performed the 1st LIVE Teleconference on Bariatric surgery in July 2013.
Praveen Raj
Praveen Raj
Praveen Raj
Praveen Raj
Praveen Raj
Praveen Raj
  • Best Video Presentation – Laparoscopic D2 Gastrectomy, Annual Congress Of American College of Surgeons, New Orleans 2007.
  • Best Paper Presentation and Gold Medal – Laparoscopic Liver Resections -A Tertiary care experience, Annual Congress of Minimal Access Surgeons Of India, Jaipur 2010, India.
  • Best Plenary Paper – Randomised trail comparing Roux en y Gastric bypass and Duodenojejunal bypass with Sleeve gastrectomy, IFSO-APC 2011, Hokkaido, Japan.
  • Best International Abstract Award – Laparoscopic Ileal Interposition SAGES 201 1, San Antonio,USA Concomitant ventral hernia mesh repair with clean contaminated procedures, SAGES, 2013.
  • Top 15 papers, American Society of Metabolic & Bariatric Surgery, Atlanta 2013
  • Top International Paper – ’NASHOST’ trial Histological changes in NAFLD patients following Bariatric surgery, Obesity Week, Boston Nov 2014
  • President – International Excellence Federation(IEF)-India Chapter


  • Does Oschner-Sherren regimen still hold good in the management of appendicular mass – Turkish Journal of Emergency surgery. April 2009
  • Transumbilical Endoscopic appendectomy in humans: on the road to NOTES : a prospective study, J Laparoendosc Adv Surg Tech A. 2008 Aug; 18(4):579-82.
  • Evolution in techniques of laparoscopic pancreaticoduodenectomy: a decade long experience from a tertiary centre, J Hepatobiliary Pancreat Surg. 2009;J6(6 :731 -40.
  • Minimally Invasive oesophagectomy for carcinoma oesophagus-approaches and options in a high volume tertiary centre, J Indian Med Assoc. 2010 Oct; 108(10):642-4
  • Bariatric to Metabolic Surgery : management options and experience at a tertiary centre, J Indian Med Assoc. 2010 Oct; 108(10):645-7
  • Laparoscic totally extraperitoneal repair of inguinal hernia using two-hand approach -a gold standard alternative to open repair, J Indian Med Assoc. 2010 Oct;108(10):652-4.
  • Is Laparoscopic Duodenojejunal bypass with Sleeve an effective alternative to Roux en Y gastric bypass in morbidly Obese patients : Preliminary results of a Randomised trial, Obes Surg. 2012 Nar;22(S/ :422-6.
  • Concomitant Laparoscopic Ventral Hernia Mesh Repair and Bariatric Surgery: A Retrospective Study from a Tertiary Care Center. Obes Surg. 2012 May;22(5):685-9
  • Comment on: Functional Importance of Laparoscopic Sleeve Gastrectomy for the Lower Esophageal Sphincter in Patients with Morbid Obesity. Obes Surg. 2012 May;22(5):847-8.
  • Laparoendoscopic single-site lateral pancreaticojejunostomy. Pancreatology. 2011; 11(5):500-5.
  • Single incision laparoscopic colorectal resection: Our experience. J Minim Access Surg. 2012 Oct;8(4): 134-9.
  • Single port access sleeve is reasonable if done without any violation of basic principles, J Minim Access Surg. 2012 Oct;8(4): 163-4.
  • Combined surgical procedures using laparoendoscopic single-site surgery approach. Asian J Endosc Surg. 2013 dc/p;6(S)/ J 65-9
  • Laparoscopic Assisted Management of a Pararectal Toilgut cyst. Indian J Surg 2014
  • Review of various lever retraction techniques in single incision laparoscopic surgery for the exposure of hiatus JMAS, 2014
  • Comparison of Effects of Sleeve Gastrectomy and Gastric Bypass on Lipid Profile Parameters in Indian Obese : A Case Matched Analysis Obes Surg. 2017 Apr
  • Laparoscopic Management of Symptomatic residual appendicular tip: A rare case report. JMAS 2017 Apr
  • Do Bariatric Surgery-Related Type 2 Diabetes Remission Predictors Add Clinical Value? A Study on Asian Indian Obese Diabetics Obes Surg. 2017 Feb
  • First Virtual Live Conference in Healthcare J Laparoendosc Adv Surg Tech A. 2016 Sep
  • Comparison of weight loss outcomes 1 year after sleeve gastrectomy and Roux-en-Y gastric bypass in patients aged above 50 years J Minim Access Surg. 2016 Jul-Sep
  • Management of gastric leaks after laparoscopic sleeve gastrectomy for morbid obesity: A tertiary care experience and design of a management algorithm J Minim Access Surg. 2016 Oct-Dec
  • Laparoscopic Assisted Management of a Pararectal Tail Gut Cyst Indian J Surg. 2015 Dec
  • Preliminary Evaluation of Acoustic Radiation Force Impulse Shear Wave Imaging to Detect Hepatic Fibrosis in Morbidly Obese Patients Before Bariatric Surgery J Laparoendosc Adv Surg Tech A. 2016 Mar
  • Major venous resection and reconstruction using a minimally invasive approach during laparoscopic pancreaticoduodenectomy: One step forward Asian J Endosc Surg. 2015 Nov
  • Laparoscopic Undo of Fundoplication with Roux-en-Y Gastric Bypass in a Morbidly Obese Patient with Prior Nissen’s Fundoplication: A Video Report Obes Surg. 2016 Jan
  • Ligation of the intersphincteric fistula tract for the treatment of fistula-in-ano: experience of a tertiary care centre in South India
  • Management of Type 1 Late Sleeve Leak with Gastrobronchial Fistula by Laparoscopic Suturing and Conversion to Roux-en-Y Gastric Bypass: Video Report Obes Surg. 2015 Dec
  • Concomitant Bariatric Surgery with Laparoscopic Intra-peritoneal Onlay Mesh Repair for Recurrent Ventral Hernias in Morbidly Obese Patients: an Evolving Standard of Care Obes Surg. 2016 Jun
  • Management of Type 2 Late Sleeve Leak by Laparoscopic Suturing and Conversion to Roux-en-Y Gastric By pass: Video Report. Obes Surg. 2015 Oct
  • Bariatric Surgical Practice Guide – Editor in Chief: Dr. PraveenRaj Mar 2017


    International Federation for Obesity & Metabolic Surgery-Asia Pacific Chapter 2011, Hokkaido,Japan
  • 1. Laparoscopic Band Revision to Bypass-VIDEO
  • 2. Laparoscopic Revisional Bypass-VIDEO
  • 3. Single Incision Gastric bypass-first Indian report-VIDEO
  • 4. Laparoscopic Duodenojejunal bypass with Sleeve-VIDEO
  • 5. Laparoscopic Duodenojejunal bypass with Sleeve in the <32. 5 BMI
  • 6. Randomised trial comparing Duodenojejunal bypass with Sleeve against Roux en Y gastric bypass in the morbidly obese-Top 5 plenary paper

  • American College of Surgeons-Annual Congress, New Orleans, 2007
  • 1. Laparoscopic D2 Gastrectomy-Best Video Presentation
  • 2. ThoracoIaparoscopic Esopagectomy-Step by step approach

  • American College of Surgeons- Annual Congress, New Orleans, 2010
  • 1. Laparoscopic Hepatic resections-Oncologic safety-Video based presentation
  • 2. 3 field Oesophagectomy using thoracoscopy and laparoscopy
  • 3. Radical feasibility

  • Society of American College of Gastrointestinal Endosurgeons, San Antonio, USA.201 1
  • 1. Laparoscopic Ileal Interposition for treatment of type 2 diabetes mellitus – Best International Abstract
  • 2. Laparoscopic Duodenojejunal bypass with Sleeve Prospective series from a tertiary care centerfrom India.
  • 3. Single Incision Laparoscopic Surgery Is It A Feasible Alternative To Laparoscopic Surgery pectrum & Experiences From A Teritiary Centre

  • Obesity Expert Meeting, SaaIfelden, Austria 2011
  • 1. Single Incision Laparoscopic Gatsric bypass without violation of basic principles.
  • 2. Laparoscopic Duodenojejunal bypass with Sleeve Gastrectomy as a procedure for treatment of type 2 diabetes mellitus in < 32.5 BMI

  • Endoscopic and Laparoscopic Society of Asia(ELSA) 2011, Singapore
  • 1. Laparoscopic Ileal Interposition with Diverted Sleeve Gastrectomy: Technique
  • 2. Laparoscopic Duodeno-jejunal Bypass with Sleeve gastrectomy Morbid Obesity: How we do it and management of a possible complication
  • 3. Single Incision Laparoscopic Hellers Cardiomyotomy with Toupet Fundoplication: Using Conventional trocars and instruments
  • 4. Single Incision Trans Abdominal Pre-PeritoneaI Hernia Repair:
  • 5. Single Incision Laparoscopic Spleen Preserving Distal Pancreatectomy Is It Feasible
  • 6. Single Incision Total Proctocolectomy with Ileostomy
  • 7. Single Incision Laparoscopic Fundoplication : Using Conventional trocars and instruments

  • International Federation for the Surgery of Obesity &Metabolic Disorders-Annual Congress 2O11, Hamburg, Germany
  • 1. ”Laparoscopic Duodenojejunal Bypass With Sleeve Gastrectomy For Morbid Obesity – A Prospective Trial”
  • 2. “Laparoscopic Ileal Interposition With Diverted Sleeve Gastrectomy: Technique”

  • International Federation for the Surgery of Obesity &Metabolic Disorders-Annual Congress 2O12, New Delhi.
  • 1. Single Incision Laparoscopic Gastric bypass-VIDEO bases lecture
  • 2. Comparison of Single Incision Gastric bypass against conventional gastric bypass.

  • Annual Congress of the Association of Surgeons of Malaysia, Kuantan, Malaysia, 2O12
  • 1. Does Metabolic Surgery increase survival?

  • International Excellence Forum,Taiwan 2012
  • 1. Laparoscopic Duodenojejuna I bypass with Sleeve for the non-morbidly obese group of population

  • International Federation for the Surgery of Obesity & Metabolic Disorders- Annual Congress 2O13, Istanbul, Turkey.
  • 1. Single Incision Laparoscopic gastric bypass-How to manage traction and countetraction-VIDEO based description
  • 2. Revisional gastric bypass-Prospective series from a tertiary care center

  • International Federation for the Surgery of Obesity &Metabolic Disorders-Asia Pacific Chapter, Kaohshiung, Taiwan, 2O13
  • 1. Essence of Center of Excellence.
  • 2. Complications of gastric bypass
  • 3. Revisional gastric bypass-after primary and revisional RYGB
  • 4. Single Incision gastric bypass-Video

  • Society of American College of Gastrointestinal Endosurgeons, 2013, Baltimore, USA
  • 1. Concomitant ventral hernia mesh repair with clean contaminated procedures- Plenary session

  • Obesity Week 2013
  • 1. Comparison of sleeve gastrectomy against Roux en Y gastric bypass for patients above 50 yrs – Intercion results at 1 year – TOP POSTER
  • 2. Single Incision Multipost Laparoscopic Bariatric Surgery:- Ergonomic principles

  • Asia Pacific Bariatric & Metabolic Surgery Society – Annual congress, Krabi, Thailand, March, 2014
  • 1. Revisional surgery after Restrictre. Bariatric Surgery – lnsted Falla
  • 2. Single incision multiport sleeve gastrectomy to Roux en Y gastric bypass.

  • International Federation for the Surgery of obesty & Metabolic disorders – Animal congress, Nov 2014, Montreal – Canada
  • 1. Convomitant Ventral hernia repair & Bariatric Surgery for Recuirment ventral hernia.
  • 2. Single Incision multiport invensional sleeve gastrectomy to gastric bypass.

  • European chapter of the International Federation for the Surgery of Obesity & Metabolic Disorders, Brussels April 2014
  • 1. Principles of Single Incision multiport technique for Bariatric Surgery – Invited talk

  • Annual conference of the Singapore. Surgical society May 2014, Singapore
  • 1. Live webcast of Single Incision Gastric bypass.

  • Obesity week 2014 (Annual Congress of the American Bariatric & Metabolic Surgery Society), Boston, USA

    TOP INTERNATIONAL PAPER NASHOST trial Histological Charges in NASFLD patient following Bariatric Surgery – 6 month results.

    8th International Hand-on Soft Candaver Workshop: Metabolic and Bariatic Surgery April 2-3, 2015, Bangkok, Thailand
  • 1. Training faculty for Bariatric training program
  • 2. Invited talk – Gut & Metabolic Disease
  • 3. Invited talk – Difference between sleeve gastrectomy & gastric bypass

  • 4th Asia Pacific IFSO – APC 2015, April 9 – 11, 2015, Kintex, Goyang, Korea
  • 1. Management of complications after Roux en Y gastric bypass
  • 2. Video Laparoscopic conversion of Nissen Fundoplication to Roux en Y gastric bypass
  • 3. Video Laparoscopic Revisional Roux en Y gastric bypass & banded bypass

  • 2nd Keele Symposium on Bariatric Surgery, SLokes on kent, UK – Dec 8-10 2015
  • 1. International Faculty
  • 2. Peculiarity of Asians & Impact of Bariatric Surgery
  • 3. Complications on Bariatric Surgery

  • Arab Health Congress 2016 – 15th Middle East Surgery Conference
  • 1. International Faculty
  • 2. Predictors of Diabetes after Bariatric Surgery – Peculiarity in Asians

  • 4th International forum for Bariatric & Metabolic Surgeons – Nanjing, China – 5-7 May 2016
  • 1. International Faculty
  • 2. Revisional Surgery after Sleeve Gastrectomy – Current Evidence

  • Asia Pacific Metabolic & Bariatric Surgery Society Congress 2016 – 14-16 Apr 2016 – Kota Kinabalu, Malaysia
  • 1. International faculty
  • 2. Management of Post Sleeve Gastrectomy GERD – Principles

  • Bariatric Surgical training & Workshop – Chulalongkorn University, Bangkok – July 6-7 2016
  • 1. International Faculty
  • 2. Procedure Selection – GERD & Sleeve Gastrectomy
  • 3. Panel Discussion – Where’s the World moving to?
  • 4. Management of Reflux & Hiatus Hernia after Sleeve Gastrectomy

  • 21st World Congress of International Federation for the surgery of Obesity & Metabolic Diseases – Sept 28-30, 2016 – Rio de Janeiro, Brazil
  • 1. Laparoscopic conversion of Rouxen Y Gastric bypass to sleeve gastrectomy as a first step of duodenal switch for weight loss failure – Video.
  • 2. Applicability of ABCD score as a predicting factor for Type 2 Diabetes mellitus in Indian patients – Plenary session.