• Diagnostic and Therapeutic endoscopies
• Diagnostic and Therapeutic colonoscopies
• Endoscopic stricture dilatation / Foreign body removal and placement of Self-expanding metallic prosthesis in the oesophagus.
• Percutaneous endoscopic gastrostomy, removal of gastric polyps and injection sclerotherapy of the bleeding vessel at the base of peptic Ulcer
• Endoscopic sclerotherapy and Endoscopic variceal band ligation of Oesophageal varices
• Cyanoacrylate Glue Injection In bleeding fundal varices
• Transjugular liver biopsies
• Diagnostic ERCP
• Endoscopic papillotomy and removal of common bile duct stones.
• Endoscopic biliary stenting of benign and malignant strictures of biliary tract.
• Endoscopic balloon dilatation of benign Biliary Strictures
• Endoscopic mechanical lithotripsy to crush the common bile duct stones.
• Endoscopic placement of double Biliary stents one each in the dilated right and left intrahepatic biliary ducts.
• Endoscopic pancreatic ductal papillotomy and removal of pancreatic ductal stones.
• Endoscopic transgastric, transduodenal and transpapillary drainage of pancreatic pseudocysts.
• Endoscopic placement of Self-expanding metallic prosthesis in malignant biliary strictures.
• Endoscopic placement of self-expanding metallic prosthesis in duodenal and gastric outlet obstruction.
• Submucosal Resection SMR for removal of early flat lesions of upper & Lower GI tract.
• Endoscopic intratumoral alcohol injection in patients with obstructive malignant growth in the oesophagus.
• Percutaneous intratumoral alcohol injection in patients with Hepatocellular carcinoma and percutaneous hypertronic saline therapy in hepatic hydatosis.
• Radiofrequency ablation of Intrahepatic tumors
• Endoscopic Ultrasound for diagnosis and management of various diseases of upper and lower gastrointestinal tract
• Double balloon Enteroscopy for diagnosis of obscure GI bleeding, intraluminal small bowel lesions causing obstruction, bleeding & chronic blood loss.
• Manometric studies of (a)UGI tract for diagnosis of achalasia cardia, motility disorder of the esophagus & stomach like gastro paresis and anorectal manometry and biofeedback
• CAPSULE Endoscopy  examination of small bowel
• Breath tests in various GI disorder
• Liver transplantation
• Laser lithotripsy for large CBD stones
• Double balloon endoscopy for assessment of small bowel disorders
• Fibro scan for noninvasive assessment of liver fibrosis
• Spy glass examination of CBD lesions with intra ductal laser assisted lithotripsy and  biopsy of intra ductal lesions
• POEM procedure for achalasia cardia
• EMR/ESD Techniques for submucosal lesions

CHAIRMAN OF INSTITUTE OF LIVER,
GASTROENTEROLOGY AND PANCREATICOBILIARY SCIENCES, GANAG RAM INSTITUTE OF POST GRADUATE MEDICAL EDUCATION AND RESEARCH –SINCE MAY 2014

Chairman and Director of GI Endoscopy in Department of Gastroenterology and Hepatology, FEB 2010-MAY 2014

Senior Consultant and Head of Hepatology Services and Teaching Coordinator, Aug 2004 – Feb 2010
Associate Consultant Gastroenterology, Sept 1996 – Aug 2004
Junior Consultant Gastroenterology, Sept 1991 – 1996 SIR GANGA RAM HOSPITAL, NEW DELHI since Sep 1991

ALL INDIA INSTITUTE OF MEDICAL SCIENCES, ANSARI NAGAR, NEW DELHI

Pool Officer in Gastroenterology, Jul 1990 – Sept 1991
Senior Resident in Gastroenterology, Jul 1987 – Jul 1990
Senior Resident in General Medicine, Jan 1987 – Jul 1987
Postgraduate in General Medicine, Jan 1984 – Dec 1986

• As a First person in Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi to start "MARS- Molecular Adsorbent Recirculation System" as an artificial liver support for the patient with Acute Liver Failure, 2004
• As a First person in Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi to be trained in "Liver Transplantation" from Liver Unit, Queen Elizabeth Hospital, Birmmingham, U.K, England- 1999
• As a First person in Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi to start "Transjugular Liver Biopsies" for diagnosis of unexplained liver diseases in patients with coagulation abnormalities, 1995
• As a First person in Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi to start "24 hours ambulatory pH monitoring studies" for diagnosis and management of patients with Gastroesophageal reflux disease, 1993
• As a First person in Department of Gastroenterology and Hepatology at Sir Ganga Ram Hospital, New Delhi to start "Microlith studies by polarizing microscopy" for diagnosis of Cholesterol monohydrate crystals and calcium bilirubinate granules in bile aspirated during either duodenal intubation or from bile duct during ERCP for diagnosis of microlithiasis of gallbladder and for recurrent idiopathic pancreatitis, 1991
• As a First person to have started the liver transplantation programme in 1999
• As a leader to have started a large number of diagnostic and therapeutic endoscopic ERCP and EUS guided procedures
• Was instrumental in starting the third space endoscopic procedures like POEM,EMR,ESD in the department
• Was instrumental in starting the neuromotility lab in the hospital

Participation In International Collaborative Studies As a co-investigator in Multinational study on "Role of Lamivudine followed by Pegylated Interferon vs. Pegylated interferon alone" in patients with HBeAg positive chronic Hepatitis B viral infection and raised serum transaminases. Published in American Journal of Gastroenterology 2006

• As a co-investigator in a Multinational study on "Role of Pegylated Interferon, Pegasus (Roche Pharma) in treatment of patients with Chronic HCV infection and normal serum transaminases"  2005 – 06
• As a co-investigator in a study on "Assessing Alcohol use associated with negative health outcomes in India" and its impact on liver disease in association with Public Health Institute, Alcohol Research Group, California, U.S.A. 2004
• As a principal investigator for assessment of TAF in treatment of HBV  infection as a part of multinational study group

He is founder member of  Delhi liver foundation trust, which is taking initiative in spreading knowledge about liver diseases amongst general population and doctors and organizing frequent camps for screening of Hepatitis B &C and Free Vaccination of thousands of potentially susceptible population in north India. In last few years it has organized many national/international conferences in India.

• Free Health Camps in rural India - Organised in Ballabhgarh District of Haryana as a part of rotatory internship programme of M.B.B.S. while being at All India Institute of Medical Sciences, Ansari Nagar, New Delhi.- 1983
• Public interest lectures in Gastrointestinal and liver diseases - For awareness of gastrointestinal diseases in general and liver disease in particular in various temples, Gurudwara and resident welfare associations in North India.
• Free Liver Camp for general public - Organized as a part of opening ceremony of Liver Clinic (April 29, 2002) at Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi in which general public interest lectures on liver disease were delivered and free HBV vaccination camp was organized for about 430 participants.
• Public awareness programme for Gastrointestinal and liver diseases - Organized by Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi during Digestive Disease Week held at Sir Ganga Ram Hospital, Rajinder Nagar form 1st - 7th November 2004 in which general public interest lectures on Gastrointestinal and liver diseases were delivered Public awareness programme for liver diseases
• Public awareness programme for Obesity -Organized by Noble Medicare on at Noble Medicare Janakpuri, to increase awareness about obesity and to increase awareness about newer modalities of treatment
• Public awareness programme for Gastrointestinal and liver diseases - Organized by Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi during Digestive Disease Week held at Sir Ganga Ram Hospital, Rajinder Nagar form 1st - 7th November 2004 in which general public interest lectures on Gastrointestinal and liver diseases were delivered Public awareness programme for liver diseases
• Organized by Department of Gastroenterology and Hepatology, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi on Hepatitis Day 19th May 2010 at Sir Ganga Ram Hospital, Rajinder Nagar which general public interest lectures on liver diseases were delivered and liver diseases detection camp was organized in which about 200 people were screened
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation at Laxmi naryaan Mandir, where 400 people were screened for hepatitis B and C, and vaccinated free of cost on 30 Nov 2012
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation at BEETHANY hospital  in Shilong on 15TH Sep 2013
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation at Lions club, Imphal  2013
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation AT Hotel tashi tarak, at Gangtok 2015
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation Sanghania Club, Gwalior ON 2ND OCT 2014
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation Blood bank Morena 2nd Oct 2014
• Organized hepatitis  B and C screening week from 24-31 july 2015, free vaccination of hepatitis B,at Noble Medicare Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation AT Hotel tashi tarak, at gangtok 2015
• Organized public awareness lecture on Know your liver in collaboration with Delhi liver foundation at Janakpuri cub, where 800 people had attended the talk, on 7th Aug 2015
• Organized public awareness lecture on Know your liver  and hepatitis screening camp where around 410 patients were screened for hepatitis B and C in collaboration with Delhi liver foundation and Sindhi  Samaj, Gwalior on 16th august 2015

• FCGP 1989 1st Position in India and Gold Medal Awarded by Indian Medical Association New Delhi
• Delivered an Oration in IMA college of general practitioners in KANPUR 1998
• DELHI rattan award for best gastroenterologist in 2004
• Distinguished Gastroenterologist 2004 Awarded by Delhi Medical Association
• Excellence   Award as  BEST  Gastroenterologist 2004 Awarded by Indian Society of Gastroenterology on behalf of Systopic  Laboratories Pvt. Ltd.
• Masters in Gastroenterology and Hepatology 2011 Awarded by JGCON – Gastrovisions 2011 at Jaipur Golden  Hospital
• Medicine oration by ASSAM MEDICAL COLLEGE in Dibrugarh in 2011
• First prize in the plenary session for our paper entitled ACLF-REVISED CLASSIFICATION in annual liver meeting held in Jaipur in 2015
• First prize in the plenary session for our paper entitled ROLE OF GCSF in decompensated chronic liver diseases in annual liver meeting held in Indore in 2016
• First prize and gold medal  for our  paper entitled ROLE OF GCSF in decompensated chronic liver diseases in DIGESTIVE DISEASE WEEK held In HONGKONG IN 2016
• SR NAIK award for the distinguished gastroenterologist by INDAIN SOCIETY OF GASTROENTEROLOGY   
• PRESIDENT INDIAN NATIONAL ASSOCIATION FOR STUDY OF LIVER 2016-2017
• EXECUTIVE MEMBER OF SOUTH ASIAN ASSOCIATION FOR STUDY OF LIVER-2017
• STEM CELL THERAPY IN LIVER DISEASES HAS IT COME OF AGE. PRESDENTIAL ORATION IN 25TH ANNUAL MEETING OF INDIAN ASSOCIATOON FOR STUDY OF LIVER ON 5.08.2017 HELD IN HOTEL PULLMAN NEW DELHI
• TIMES HEALTH CARE ACHIEVERS AWARD DELHI NCR.  LEGENDS IN GASTROENTEROLOGY  AWARDED BY TIMES OF INDIA ON 20.08.2017
• ISG –Zydus awrad award for the distinguished Gastroenterologist by INDAIN SOCIETY OF GASTROENTEROLOGY in2017
• DRONACHARYA AWARD FOR EXCELLENCE IN HEPATOLOGY AWARDEDBY integrated Health and Wellbeing (IHW) Council and media partner CNN News18, Omnicuris, India's Largest Online CME Platform on its initiative CME Excellence  Summit & AwardsAT HYATT HOTEL ON 08TH AUG2019
• DR PN CHUTTANI ORATION -ISG 2021-MENACE OF HEPATITIS B -LIGHT AT THE END OF A DARK TUNNEL
• LIFE TIME ORATION- Awarded by TRINITY an international medical students conference hled on June 2023, 27that 3 pm, in LOKMANYA TILAK MEDICAL COLLEGE AUDITORIUM MUMBAI, INDIA
• Life time achievement award Oration ‘Delivered in North East Medicon 2023at Greenwood resort Khanpara Guwahati Assam on 13th May 2023
• N MADAN GOPALAN ORATION – Awarded by INASL 2023 DURING ANNUAL MEETING IN BHUBHNESHWAR FROM 2 TH TO 9 TH AUGUST 2023
• As a guest speaker for the prestigious oration” Late Sushila Nayar hepatology oration: latest trends in hepatology” on the occasion of IMA AMS wet zone conference “MAHA-AMSCON & NIMACON 2024” at J.R. Shaw Auditorium, IMA hall, North Ambazari road, Nagpur on 22nd Sep 2024.

MBBS, 1982, All India Institute of Medical Sciences, New Delhi

Internship - All India Institute of Medical Sciences, New Delhi

MD (Medicine), 1986, All India Institute of Medical Sciences, New Delhi

DNB (Medicine), 1987, National Board of Examination, New Delhi   

DM (GASTRO), 1989, All India Institute of Medical Sciences, New Delhi

FCGP, 1989, Indian Medical Association, New Delhi, 1st Position in India and Gold Medal

Fellowship in Liver Transplantation 1999, Queen Elizabeth Hospital Birmmingham, England, United Kingdom

FRCP, 2005, Royal College of Physicians Edinburgh, UK

FIAMS, 2007, Fellow International Academy of Medical Sciences

FRCP, 2014, Royal college of physicians of London, UK

FAASLD, 2019 Fellow of American Association for the study of Liver Diseases,USA

1. Life member Indian Society of Gastroenterology.
2. Life member Indian Medical Association
3. Life member IMA college of General Practitioners
4. Life member IMA college of Medical Specialists
5. Life member Society of Gastrointestinal Endoscopists of India.
6. Life member Indian Society for Study of Liver diseases.
7. Life member of American Association for the study of Liver Diseases (AASLD)
8. Member of Asian Pacific Association for study of Liver diseases (APASL)
9. Member of Royal college of physicians Edinburgh
10. Member of Royal college of physicians of London 
11. Has been on advisory board of various national and international forums and consortia and task force for various types of hepatobiliary diseases like HBV,HCV,NAFLD,HCC,ALCOHOLIC LIVER DISEASE,STEM CELL THERAPY IN LIVER DISEASES AND ACUTE PANCREATITIS