Dr. Prasanna Karthik S

Dr Prasanna Karthik S is a highly distinguished internal medicine and diabetology specialist in Chennai with 19 years of experience in clinical practice, medical education, and hospital administration.

He currently serves as a Senior Consultant at Gleneagles Global Health City, Perumbakkam, Chennai, where he provides comprehensive and evidence-based care for a wide range of medical conditions.

If you are searching for the best physician in Chennai or a trusted diabetologist in Perumbakkam, Dr Prasanna S is a Fellow of the Royal College of Physicians, Edinburgh (FRCP) and an MRCP (UK) holder, bringing strong international clinical credentials and over 16 years of academic excellence to his practice.

He consults in English and Tamil.

Areas of Expertise

Dr Prasanna Karthik specialises in comprehensive internal medicine and diabetology, with focused expertise in lifestyle diseases, stroke, and critical care management.

Diabetes and Metabolic Care

• Diabetes Management
• Prediabetes and Metabolic Syndrome
• Thyroid Disorder Management
• Lifestyle Disease Management

Cardiology, Stroke and Infectious Diseases

• Stroke Management
• Hypertension Management
• Cardiology Care
• Infectious Disease Management

Critical Care and General Medicine

• Critical Care Management
• Comprehensive Adult Medical Care
• Autoimmune Conditions Management

Professional Experience

Current Affiliation

• Senior Consultant, Gleneagles Global Health City, Perumbakkam, Chennai

Previous Affiliations

• Professor, Sri Venkateswaraa Medical College Hospital, Chennai
• Professor, Saveetha Medical College Hospital, Chennai
• Assistant Professor, Sri Muthukumaran Medical College Hospital, Chennai
• Resident, Madras Medical College, Chennai

Credentials and Qualifications

Educational Background

• MBBS from PSG Institute of Medical Sciences and Research, Coimbatore in 2007
• MD in General Medicine from Madras Medical College, Chennai in 2012
• MRCP (UK) from Royal College of Physicians, UK in 2015
• FRCP (Edinburgh) from Royal College of Physicians of Edinburgh in 2022
• FIAMS from Indian Academy of Medical Specialties in 2016
• FIACM from Indian Association of Clinical Medicine in 2024
• MBA in Hospital Administration from DY Patil University, Pune in 2025

Awards and Recognitions

• Best Teacher Award, IMA Academics, MSN-JDN Wing, Tamil Nadu (2023)
• National and Zonal Psychiatry Quiz Winner (2005-2006)

Research and Publications

Dr Prasanna Karthik S has published 70+ indexed research papers in national and international journals covering stroke, diabetes, cardiology, infectious diseases, and autoimmune conditions.

He has also authored a chapter in Translational Autoimmunity, Volume 4, Elsevier UK (2022) and contributed to handbooks and chapters for medical undergraduates.

Medical Registration

• Tamil Nadu Medical Council (Registration No. 81213)

Book an Appointment

Connect via HexaHealth to consult Dr Prasanna Karthik S for expert care in internal medicine, diabetes, hypertension, thyroid disorders, stroke management, and comprehensive adult medical care in Chennai.