Our Medical Staff


Dr. N. Ramakrishnan

Dr. Babu K. Abraham

Dr. R. Senthil Kumar

Dr. Ashwin K Mani

Dr. Ramesh Venkataraman

Dr. Dedeepiya Devaprasad

Dr. R. Ebenezer

Dr. C. Vignesh

Dr. Raymond Dominic Savio

Dr. R. Pratheema

Dr. Ashok Kumar

Dr. Bharath Kumar

Tirupakuzhi Vijayaraghavan

Dr. Balaji Venkatachalam

Dr. Meghena Mathew

Dr. Ajay Padmanaban

Dr. Pavan Kumar

Dr. Sristi Patodia

Dr. Sureshkumar

Dr. Rohit Aravindakshan Kooloth

Dr. Brahmananda Reddy Nagolu

Dr. C.V. Sasi Mayukha

Dr. Lakshmi Ranganathan


Dr. N. Ramakrishnan

AAB (Internal Medicine), AB (Critical Care), AB (Sleep Medicine), AB (Sleep Medicine), MMM, FACP, FCCP, FCCM, FAASM, FICCM, FISDA - Founder & Managing Director

Dr. N. Ramakrishnan is an American Board Certified Specialist in Internal Medicine, Critical Care Medicine, Sleep Medicine & Obesity Medicine and also has a Master’s degree in Medical Management (MMM) from University of Southern California. He is a Fellow of American College of Physicians (FACP), American College of Chest Physicians (FCCP), American College of Critical Care Medicine (FCCM), American Academy of Sleep Medicine (FAASM), Indian College of Critical Care Medicine (FICCM), Indian Sleep Disorders Association (FISDA). He has been practicing Critical Care Medicine for over 22 years and Sleep Medicine for over 20 years. He is currently a Senior Consultant in Critical Care & Sleep Medicine and Director, Critical Care Services at Apollo Hospitals and Medical Director & Tele-Intensivist at Advanced ICU Care, USA. He is the Founder and Managing Director of TACT Academy for Clinical Training which is India’s first simulation based healthcare training centre. He also established Nithra Institute of Sleep Sciences in 2004 which is the first- of-its- kind freestanding comprehensive sleep center. The Institute prides itself with being the first to offer University affiliated post-doctoral fellowship in Sleep Medicine and also being the first Sleep Center to be accredited by National Accreditation Board of Hospitals and Healthcare Organizations (NABH).

Dr. N. Ramakrishnan has served on different roles in the Executive Committee of the Indian Society of Critical Care Medicine (ISCCM). He was the Charter Secretary of Indian College of Critical Care Medicine (ICCM), the academic wing of ISCCM in which he also served as the Vice Chancellor. He is also a Past President of Indian Sleep Disorders Association (ISDA). He has over 100 peer reviewed abstracts and publications and is a respected teacher and invited speaker at national and international conferences. He has authored books in Critical Care and Sleep Medicine and is actively involved in education and training of healthcare professionals and general public.


Dr. Babu K. Abraham

MD, MRCP (UK), Fellowship in Critical Care Medicine (University of Toronto), FICCM - Director

He has a postgraduate degree in Medicine from the prestigious Kasturba Medical College in Manipal. He subsequently trained in Pulmonary Medicine in the United Kingdom and is a Member of Royal College of Physicians (MRCP), United Kingdom. He then pursued fellowship training in Critical Care Medicine at University of Toronto. He is currently a Senior Consultant in Pulmonary & Critical Care Medicine at Apollo Hospitals, Chennai. He is well respected as a clinician and teacher and has authored original publications in journals of repute. He is a course director for Advanced Trauma Life Support (ATLS) program.

Dr. Babu Abraham has been conferred the Fellowship of the Indian College of Critical Care Medicine and is the present secretary for examinations for the Indian College of Critical Care Medicine. He is an examiner for the National Board Critical Care Exam and for Diploma (IDCCM) and Fellowship (IFCCM) exams conducted by Indian College of Critical Care Medicine.


Dr. R. Senthil Kumar

MD, IDCCM, FICCM, EDIC - Director

He is currently a Senior Consultant in Critical Care Medicine at Apollo Hospitals, Chennai. He has a postgraduate degree in Anesthesia from Government Medical College, Nagpur, where he was ranked first in the university. He has completed the Indian Diploma in Critical Care Medicine (IDCCM), European Diploma in Intensive Care (EDIC). He is a fellow of Indian college of critical care medicine. He also has a Fellowship in Pain Medicine.


Dr. Ashwin K Mani

AB (Internal Medicine), AB (Pulmonary), AB (Critical Care) - Director

Dr. Ashwin K Mani is American Board certified in Internal Medicine, Pulmonary and Critical Care Medicine. He was trained at the prestigious Thomas Jefferson University Hospital, Pennsylvania. He has several original Publications and has been an invited speaker at national and International conferences. He is currently a Senior Consultant in Pulmonary Medicine and Co-ordinator of the Critical Care Unit at Apollo First Med Hospitals, Chennai. Dr. Ashwin Mani has a special interest in interstitial lung disease, Pulmonary hypertension, ARDS and non-invasive ventilation.


Dr. Ramesh Venkataraman

AB (Int Med), AB (Crit Care) - Director

Dr. Ramesh Venkataraman is American Board certified in Critical Care Medicine and is a Fellow of American College of Physicians (FACP), American College of Chest Physicians (FCCP), American College of Critical Care Medicine (FCCM) and Indian College of Critical Care Medicine (FICCM). He is a Senior consultant & the Department Coordinator for the Department of Critical Care Medicine at Apollo Hospitals, Chennai. He has completed a postdoctoral certification in clinical education and has a special interest in simulation-based education.

Since 2007, he has been an active educator for the ISCCM and is one of the core organizers for Chennai Chapter’s highly sought-after mechanical ventilation, hemodynamic monitoring and refresher courses. He has been an examiner for IDCCM and IFCCM examinations and a regular faculty in ISCCM national conferences. He is involved in the development of the 4C and the Critical Care Infectious Disease courses created by the Indian College of Critical Care Medicine. He is also currently the Associate Editor of the Indian Journal of Critical Care Medicine.


Dr. V. Dedeepiya Devaprasad

MD, DNB, IDCCM, EDIC, FICCM - Consultant

He has a postgraduate degree in Internal Medicine from Government Stanley Medical College, Chennai and also National Board of Examinations. He has won several gold medals during his under graduation and post graduate studies and subsequently pursued the Indian Diploma in Critical Care Medicine and European Diploma in Critical Care Medicine (EDIC). He is currently pursuing post-doctoral research in role of stem cells in healthcare He was recognized for his contributions to critical care medicine and awarded the fellowship of Indian College of Critical Care Medicine (FICCM). He is working as a Senior consultant in Critical Care Medicine and Corodinator of the Critical Care Unit at Apollo Speciality Hospitals.


Dr. R. Ebenezer

DNB(ANAES), IDCCM, IFCCM, EDIC – Consultant

He graduated from the Madurai Medical College and then completed his Masters in Anaesthesiology. He has completed Indian Diploma in Critical Care Medicine (IDCCM) and Indian Fellowship in Critical Care Medicine (IFCCM). He is also European diplomate in Intensive Care Medicine. He works as a Senior Consultant and is the Coordinator of the Critical Care Unit at Apollo Speciality Hospitals, Vanagaram, Chennai.


Dr. C. Vignesh

MD (Anaes), FNB (Critical Care), EDIC - Consultant

He graduated from Perundurai Medical College & Research Centre, Perundurai and post graduate degree in anaesthesiology from Sri Ram Chandra Bhanj Medical College, Cuttack, Orissa. He subsequently worked as Senior Resident in the Dept. Of Anesthesia, JIPMER, Puducherry and then pursued his Fellowship, National Board of Examinations in Critical Care (FNB) at Sir Gangaram Hospital, New Delhi. He has also completed the European Diplomate in Intensive Care Medicine (EDIC). He is a Consultant & the Academic Coordinator for the Department of Critical Care Medicine at Apollo Hospitals, Chennai.


Dr. Raymond Dominic Savio

MD (Internal Medicine), D.M (Critical Care), EDIC, FICCM – Consultant

He completed his graduation from Rajah Muthiah Medical College, Annamalai University with the distinction of “Best Outgoing Student” in addition to various other endowment awards for excellence in academics and fine arts. He completed his post graduation in Internal Medicine from J.S.S. Medical College, Rajiv Gandhi University of Health Sciences and subsequently his super specialization in Critical Care Medicine from S.R.M.C., Sri Ramachandra University. He additionally holds the European Diploma in Intensive Care (EDIC) conferred by the European Society of Intensive Care Medicine (ESICM) and a Fellowship with Indian College of Critical Care Medicine (FICCM) conferred by the Indian Society of Critical Care Medicine (ISCCM). Currently, he is the Lead Consultant for Critical Care Services at Apollo Proton Cancer Center, Chennai.


Dr. R. Pratheema

DNB (Anaes), IDCCM, IFCCM ,EDIC - Consultant

She has graduated from Vinayaka Missions Medical College, Salem and completed her post-graduation in Anaesthesiology - Diplomate (DNB) in Anaesthesiology from National Board of Examinations, Delhi, Superspecialisation in critical care- Indian Diploma in Critical Care medicine (IDCCM) and Indian Fellowship in Critical Care Medicine (IFCCM). She is also awarded European Diploma in Intensive Care (EDIC) by European Society of Intensive Care Medicine.

Apart from being a regular teaching faculty in various workshops and courses conducted by ISCCM and her contributions to various book chapters published by ISCCM, she is also the local host organizer/ course director for Emergency Neurological Life support (ENLS) course accredited by NeuroCritical care Society of USA. She also holds Certificate of honors in simulation-based training.

She is currently a Consultant at Apollo Speciality Hospitals, OMR.


Dr. Ashok Kumar

MBBS, DA, IDCCM - Consultant

Dr. Ashok graduated from BLDEA medical college, Bijapur. He has a post graduate degree in Anaesthesiology from Ambedkar medical college, Bangalore. Following this he completed his IDCCM and is currently working as Consultant at Apollo Hospitals, Chennai.


Dr. Bharath Kumar Tirupakuzhi Vijayaraghavan

MD, DNB, EDIC - Consultant

He has a post graduate degree in Anaesthesiology from the Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh. He completed this with Honors and was awarded the Bronze Medal for academic excellence by PGIMER. He subsequently went on to complete Fellowships in Critical Care from National University Hospital, Singapore and Sunnybrook Health Sciences Centre, Toronto. He has also completed the European Diploma in Intensive Care and is currently working as Consultant at Apollo Hospitals, Chennai.

He is also pursuing a MSc in Clinical Trials from the prestigious London School of Hygiene and Tropical Medicine and is deeply passionate about research in Lower Middle-Income Countries (LMICs). Specifically, he is interested in the establishment and development of research networks for critical care in LMICs and the epidemiology of critical illness in resource limited settings. He is the National Coordinator of the Indian Registry of IntenSive care (IRIS) and is a Member of the Research Committee, Indian Society of Critical Care Medicine

Dr. Bharath Kumar is also the PI for the LOVIT-India trial which is evaluating the role of IV Vitamin C in Sepsis and the HOPE trial which is evaluating the role of hydroxychloroquine prophylaxis for prevention of COVID-19 among healthcare workers. In addition, he serves on the Steering Committee of several International trials.


Dr. Balaji Venkatachalam

D. Diab, DNB, IFCCM, EDIC, MRCP (UK) - Consultant

He completed his Diploma In Diabetology from Madras medical college, which is the only MCI recognised Diabetology course in the country. He did his DNB - Internal medicine from Southern Railway HQ hospital, Chennai. Subsequently, he completed IDCCM and IFCCM, followed by European diploma in Intensive care medicine. He cleared his MRCP (UK) from London college of entry. He is a senior consultant - Critical care at Apollo hospital, Greams road, Chennai.


Dr. Meghena Mathew

DNB, IDCCM, EDIC, IFCCM - Consultant

She graduated from Christian Medical College, Vellore and has completed post-graduation in Pulmonary Medicine from National Board of Examinations, New Delhi (DNB). She has completed her Indian Diploma in Critical Care Medicine (IDCCM) and European Diploma in Intensive Medicine (EDIC) and Indian Fellowship in Critical Care Medicine (IFCCM). She is also AHA accredited ACLS/BLS instructor. She is currently working as Consultant in Apollo First Med Hospitals, Chennai.



Dr. Ajay Padmanaban

M.D (Anesthesiology), IDCCM, Pursuing IFCCM - Consultant

He graduated from Rajah Muttiah medical college, Annamalai University and completed his post graduate degree in Anesthesiology from Postgraduate Institute of Medical education and research (PGIMER) Chandigarh. He has completed Indian diploma in critical care medicine (IDCCM). He has also obtained the Indian fellowship in critical care medicine (IFCCM) in Apollo hospitals Chennai and has cleared European Diploma in Intensive Medicine (EDIC) first level. He has more than 7 years post MD experience in critical care. Currently he is a Consultant in Critical care in Apollo hospitals, Greams Road, Chennai.


Dr. Pavan Kumar

MD (Anesthesiology), FNB (Critical Care Medicine) - Consultant

He graduated from Mahadevappa Rampure Medical College, Rajiv Gandhi University of Health Sciences (RGUHS ), Karnataka and holds a post-graduate degree in Anaesthesiology from Byramjee Jeejeebhoy Medical College (BJMC), Gujarat University. He has completed his National Board Fellowship course, FNB in Critical Care Medicine at Sudhamayi Hospitals and Clinics, Amrita Vishwavidyapeetam, Kochi and now pursuing his European Diploma in Intensive Care.Currently, he is working as Consultant in Critical Care Medicine at Apollo Speciality Hospital, Vanagaram, Chennai.


Dr. Sristi Patodia

MD (General Medicine), IDCCM - Consultant

She graduated from Sri Ramachandra Institute of Higher Education and Research (formerly Sri Ramachandra Medical College & Research Institute), Chennai and went on to complete her MD in General Medicine, with a University Gold Medal. She has over 7 years of post MD experience with multispecialty hospitals across Chennai, particularly in the field of Critical Care. She has completed Indian Diploma in Critical Care Medicine (IDCCM) and is currently pursuing her European Diploma in Critical Care Medicine (EDIC). She is currently working as a Consultant in Critical Care Medicine at Apollo Proton Cancer Centre (APCC), Taramani, Chennai.


Dr. Sureshkumar

MD Anaesthesia and Intensive Care (EDAIC) - Consultant

He graduated from Kilpauk Medical college and he has completed MD Anaesthesia from Safdarjung Hospital, Delhi. He did 3 years of Senior residency in the same hospital, during which he got posted predominantly in ICU due to his interest in this field. Meanwhile he completed DNB Anaesthesia also. Subsequently he has completed European Diploma in Anaesthesia and Intensive Care (EDAIC). He has more than 8 years of post MD experience in various hospitals across Delhi and Madurai, especially in the field of Critical Care. Also he has done a fellowship in Pain management in Delhi pain management centre.


Dr. Rohit Aravindakshan Kooloth

MD (Anaesthesiology), IDCCM, EDIC, Fellowship in Advanced Intensive Care( FICM) - Consultant

Dr. Rohit graduated from Vydehi Institute Of Medical Sciences and subsequently completed his MD in Anaesthesiology from Government Medical College Surat. Following this he completed his IDCCM from Jaslok Hospital, Mumbai and worked in many leading corporate hospitals in Bangalore.

He then completed his European Diploma Of Intensive Care examinations (EDIC) from London after successfully completing the advanced fellowship training course under the Faculty Of Intensive Care, UK. He has a special interest in POCUS for the ICU and has completed the FUSIC certification course in the UK.He was working as an acting consultant with University Hospitals Birmingham before joining as Consultant with Apollo Hospitals Teynampet.


Dr. Brahmananda Reddy Nagolu

MBBS, DEM, MRCEM - Consultant

He graduated from Dalian Medical University and completed his post graduation degree in emergency medicine - MRCEM from the royal college of emergency medicine and is working as consultant at Apollo speciality hospitals, OMR.


Dr. C.V. Sasi Mayukha

DNB ( Anaesthesiology), IDCCM - Consultant

She graduated from PSG institute of medical sciences and research, Coimbatore. She did her post graduation in the field of Anaesthesiology from Madurai. She has completed her Indian Diploma in Critical Care Medicine (IDCCM) at Apollo hospitals, Chennai. She is currently pursuing her European Diploma in Critical Care (EDIC). She is currently working as a consultant at Vijaya group of hospitals , Chennai.


Dr. Lakshmi Ranganathan Ph.D

Clinical Research Manager

Dr. Lakshmi Ranganathan is working with our team as Research Manager. She has completed post doctoral research and holds a PhD in Biochemistry. She is the Site Implementation Officer of the Indian Registry of IntenSive care Registry (IRIS).