The digestive system affects everything from energy levels to immunity. A gastroenterologist is a doctor who diagnoses, treats and helps prevent problems of the food pipe, stomach, intestines, liver, gallbladder and pancreas. People see a gastroenterologist in Chennai for many reasons, from acid reflux and constipation to liver disease and cancer screening.
Prashanth Hospitals has gastroenterologists and GI surgeons at its Kolathur and Velachery branches. Each doctor below is listed with their branch, so patients can choose someone close to home.
Gastroenterologists and GI Surgeons at Prashanth Hospitals
The digestive care team includes medical gastroenterologists, who treat with medicines and endoscopy, and GI and laparoscopic surgeons, who treat conditions that need an operation.
Dr. G. Gopalaswamy
- Location: Kolathur
- Qualifications: MBBS, MS (General Surgery), FRCS (Glasgow)
- Experience: 47+ years
- Designation: Managing Director, Prashanth Group of Hospitals
- Department: Surgical Gastroenterology and Andrology
Dr. G. Gopalaswamy is a surgeon whose practice covers gastrointestinal surgery and male reproductive health. His work includes laparoscopic (keyhole) and endoscopic procedures for digestive conditions, along with assessment and treatment of male infertility.

Dr. Prashanth Krishna G
- Location: Kolathur
- Qualifications: MS (General Surgery), MRCS (Edinburgh), Dip. MAS (France), FACS (USA)
- Experience: 11+ years
- Designation: Medical Director, Prashanth Group of Hospitals
- Department: Surgical Gastroenterology
Dr. Prashanth Krishna is a GI surgeon whose work includes minimally invasive and robotic surgery for digestive conditions. His areas of care include surgery for gastrointestinal cancers, surgery of the liver, pancreas and bile ducts (hepato pancreato biliary surgery) and complex hernia repair.

Dr. Chezhian A
- Location: Velachery
- Qualifications: MBBS, MD (General Medicine), DM (Gastroenterology)
- Experience: 25+ years
- Designation: Senior Consultant
- Department: Medical Gastroenterology
Dr. Chezhian A is a gastroenterologist in Chennai who consults at the Velachery branch. He treats long term and advanced digestive and liver conditions, including cirrhosis, pancreatitis and other complex problems of the digestive tract, with a focus on careful diagnosis and treatment planned for each patient.

Dr. Kayalvizhi Jayaraman
- Location: Kolathur
- Qualifications: MD (Internal Medicine), DM (Gastroenterology)
- Experience: 20+ years
- Designation: Consultant Gastroenterologist
- Department: Gastroenterology
Dr. Kayalvizhi Jayaraman is a gastroenterologist in Chennai who consults at the Kolathur branch. Her areas of care include motility disorders (problems with how food moves through the gut), liver disease, inflammatory bowel disease (IBD), GERD, IBS, gallstone disease, diarrhoea, constipation and gastrointestinal bleeding. She performs endoscopic procedures including ERCP and EUS, and combines medical treatment with diet and lifestyle guidance.

Dr. Madhusudhanan D
- Location: Velachery
- Qualifications: MS (General Surgery), FIAGES, FALS (Colorectal, Upper GI, Hernia)
- Experience: 16+ years
- Designation: Senior Consultant Surgeon
- Department: General and GI Surgery
Dr. Madhusudhanan D is a general and GI surgeon at the Velachery branch. His work includes basic and advanced laparoscopic surgery, surgery for gastrointestinal cancers, endoscopy and colonoscopy.

Dr. Parimuthukumar
- Location: Kolathur
- Qualifications: MBBS, MS, FACS, Dip. MIS (France)
- Experience: 15+ years
- Designation: Senior Consultant
- Department: Minimally Invasive GI and Bariatric Surgery
Dr. Parimuthukumar is a laparoscopic surgeon at the Kolathur branch. His work includes keyhole surgery for digestive conditions, abdominal wall reconstruction for complex hernias and bariatric (weight loss) surgery.

Dr. Sultan Nawahirsha
- Location: Velachery
- Qualifications: MBBS, MD (General Medicine), DM (Medical Gastroenterology)
- Experience: 11+ years
- Designation: Associate Consultant
- Department: Medical Gastroenterology
Dr. Sultan Nawahirsha is a gastroenterologist in Chennai who consults at the Velachery branch. He treats liver diseases, acute and chronic pancreatitis, gastrointestinal bleeding and inflammatory bowel disease. He also performs endoscopic procedures and manages GERD, acid peptic disease and functional bowel problems.

Medical Gastroenterologist vs GI Surgeon: What is the Difference?
The doctor list above includes both medical gastroenterologists and GI surgeons. The difference decides what kind of care each one provides.
A medical gastroenterologist manages digestive conditions with medicines, diet advice and non surgical procedures such as endoscopy. For acid reflux, IBS, liver disease or ongoing digestive discomfort, this is usually the first doctor to see. Treatment focuses on controlling symptoms and managing the condition over time without an operation.
A GI surgeon (surgical gastroenterologist) treats conditions that need an operation. This includes hernia repair, gallbladder removal, weight loss surgery and surgery for digestive cancers. Many of these operations are now done laparoscopically or robotically, through smaller cuts.
The two often work together. A medical gastroenterologist may diagnose and manage a condition for years, and refer the patient to a surgeon only if surgery becomes the better option. For anyone unsure which specialist to see, starting with a medical gastroenterologist is usually the right first step.
What Does a Gastroenterologist Do?
- Diagnosis of digestive problems: Gastroenterologists assess symptoms such as stomach pain, heartburn, constipation, diarrhoea or weight loss. They use tests such as endoscopy, colonoscopy and scans to find the cause.
- Management of long term conditions: Conditions such as IBS, IBD, GERD and liver disease need regular follow up and treatment plans that combine medicines, diet advice and procedures when needed.
- Specialised procedures: These include endoscopic ultrasound (EUS), ERCP to treat bile duct and pancreas problems, and removal of polyps during colonoscopy.
- Screening and prevention: Colonoscopy and liver tests help find colon cancer, hepatitis and other problems early.
- Diet and lifestyle guidance: Advice on food, weight, alcohol and daily habits helps prevent flare ups and protect the liver.
Why See a Gastroenterology Specialist?
- Early detection: Problems such as ulcers, liver disease or cancers can be found before they progress.
- Care for long term conditions: IBS, GERD and IBD need ongoing, specialist treatment to control symptoms.
- Access to procedures: Endoscopy and other procedures can diagnose and treat many problems without open surgery.
- Screening: Regular checks lower the risk of serious digestive diseases going unnoticed.
Conditions Treated
- Acid peptic disorders and GERD: Acid reflux, ulcers and gastritis, treated with medicines, lifestyle changes and procedures when needed.
- Liver and pancreas diseases: Hepatitis, cirrhosis, fatty liver and pancreatitis, managed with tests, medicines and procedures.
- Gastrointestinal cancers: Colon, stomach and pancreatic cancers, treated with a combination of surgery, endoscopic procedures and follow up care with the oncology team.
- Bowel and functional disorders: IBS, IBD, constipation and diarrhoea, managed with treatment plans, diet changes and regular review.
- Conditions needing surgery: Hernia, gallstones and other conditions treated with laparoscopic or open surgery.
When to Seek Emergency Care
Go to the emergency department straight away for:
- Vomiting blood or material that looks like coffee grounds
- Black, tarry stools or a large amount of blood in the stool
- Sudden, severe stomach pain
- Yellowing of the eyes or skin with fever or confusion
These can be signs of bleeding, a blockage or a serious infection that needs urgent care.
How to Book an Appointment at Prashanth Hospitals
Patients can call the hospital and speak with the reception team, who help find the next available slot with the chosen doctor. Online booking is also available on the hospital website, where patients can choose a doctor, date and time.
Patients who prefer a particular branch, such as Kolathur or Velachery, can mention this while booking. For a first visit, it helps to bring past medical records, scan reports and current prescriptions, so the doctor can understand the history quickly.
Conclusion
Digestive and liver problems are common, and many can be managed well when they are found early. Seeing a gastroenterologist in Chennai helps find the cause of symptoms and plan the right treatment, whether that is medicine, an endoscopic procedure or surgery. Prashanth Hospitals has medical gastroenterologists and GI surgeons at its Kolathur and Velachery branches, so patients can choose a specialist close to home.