
FRCS (Lond), FRCS (Neurosurgery), CCST (UK), Spine Fellowship (USA). Skull-base & Vascular Fellowship (USA). Director – Department of Neurosurgery and Spine.
| Head of Dept. Neurosurgery	 | AMRI Hospital, Salt Lake | Feb 2016 to Jan 2020 | 
| Senior Consultant | Fortis Hospital | Aug 2012 to Jan 2016 | 
| Medical Director | Institute of Neurosciences | June 2011 to July 2012 | 
| Head of Neurosurgery | West Bank Hospital, Andul Road, Howrah | 2002 to 2010 | 
| FELLOW  IN SKULL-BASE & MICROVASCULAR NEUROSURGERY | Louisiana State University Shreveport, Louisiana,   USA Consultants: Dr. A Nanda | 22nd Dec 2000  to 31st Aug 2001 | 
| SPECIALIST  REGISTRAR  NEUROSURGERY | Charing Cross   Hospital, London Consultants: Mr. N Mendoza, Mr. D Peterson | 18th Oct 1999  to 17th Oct 2000 | 
| SPECIALIST  REGISTRAR  NEUROSURGERY | Addenbrookes Hospital, Cambridge Consultants: Mr. DG Hardy, Mr. R Macfarlane | 15th Jul 1998  to 17th Oct 1999 | 
| LOCUM  CONSULTANT NEUROSURGEON | Manchester  Royal Infirmary  Manchester, UK. | 1st Feb 1998  to  15th Jul 1998 | 
| SPINE  FELLOW | Ohio State   University  Columbus, Ohio, USA Consultants: Dr. Gary L Rea, Dr. Lawrence J Mervis | 1st  Nov    1996 to 31st Jan 1998 | 
| SPECIALIST  REGISTRAR  NEUROSURGERY | Oldchurch Hospital, Romford, Essex Consultants: Mr. N Garvan, Mr. J Benjamin | 1st Jan 1996  to  31st Oct 1996 | 
| REGISTRAR  NEUROSURGERY | Royal Free Hospital, LondonConsultants: Mr. R Maurice-Williams, Mr. R Bradford | 1st Jan 1995  to  31st Dec 1995 | 
| REGISTRAR  NEUROSURGERY | National Hospital for Neurology and Neurosurgery, London Consultants:  Mr. HA Crockard, Mr. M Powell | 1st  Aug 1994  to  31st Dec 1994 | 
| REGISTRAR  NEUROSURGERY | Great Ormond   Street Hospital  for  Sick Children, London Consultants: Mr. R Hayward, Mr. W Harkness | 1st  Feb 1994  to  31st July 1994 | 
| REGISTRAR  NEUROSURGERY | National Hospital for Neurology and  Neurosurgery, London Consultants:  Mr. HA Crockard, Mr. M Powell | 1st  Aug 1993  to  31st Jan 1994 | 
| REGISTRAR  NEUROSURGERY | National Hospital for Neurology and  Neurosurgery, London Consultants:  Mr. R Hayward, Mr. W Harkness | 15th  Feb1993 to 31st July 1993 | 
| S. H. O. NEUROSURGERY | Addenbrookes Hospital,  Cambridge Consultants: Prof. J Pickard, Mr. DG Hardy | 1st  Aug 1992  to 31st Jan 1993 | 
| S. H. O. ORTHOPAEDICS | Addenbrookes Hospital, Cambridge Consultants: Mr. CR Constant, Mr. BF Meggitt | 1st  Feb 1992  to  31st Jul 1992 | 
| S. H. O. A & E | St. George's Hospital, London Consultants: Mr. DB Wijetunge, Dr. L Stevens | 1st  May 1991  to  31st Oct 1991 | 
| S. H. O. SURGICAL GASTRO-ENTEROLOGY | Medical College Hospitals, Calcutta Consultant: Mr. D Sengupta | 1st  Aug 1990  to  21st Apr 1991 | 
| S. H. O. GENERAL SURGERY | Medical College Hospitals, Calcutta Consultants: Professor DK Roy, Dr. PK Sen | 1st  Aug 1989  to  31st Jul 1990 | 
| HOUSE   OFFICER | Rotating through Departments of  Medicine / Surgery / Obstetrics and   Gynaecology | 1st  Aug 1988  to  31st Jul 1989 |