Dr. Ramkumar S is Diabetologist, Thyroid Specialist and Endocrinologist in Chennai in Apollo Main Hospital, Greams Road, First Med Hospital, Kilpauk, and Bharthiraja Specialty Hospital, T Nagar. He is also visiting Endocrinologist in Chennai and Diabetes doctor in Chennai at Apollo Diabetes and Thyroid Clinic, Kotturpuram, and Endocrinologist in Anna Nagar in Apollo Sugar Endocrine Clinic. He is also the Pediatric Endocrinologist in Chennai in Apollo Children Hospital. Dr. Ramkumar S is the only Endocrinologist in Chennai to work in Government Hospital attached to Madras Medical College.Dr. Ramkumar S had received his super specialty degree in Endocrinology from the prestigious All India Institute of Medical Sciences (AIIMS), New Delhi. He has also done the Fellowship in Diabetes in the department of Endocrinology, Auckland City Hospital, Auckland. Dr. Ramkumar S has also done DNB Endocrinology certified by the National Board of Examinations and is the only Diabetologist and Endocrinologist to have dual DM Endocrinology and DNB Endocrinology in Chennai and in the state of Tamilnadu.