• Assistant professor of Neurosurgery- Sri venkateshwara  Institute of Medical Sciences ,Tirupathi. Period 1995-1998; 2 ½ years
• Professor of Neurosurgery –Sree chitra  Tirunal Institute for Medical  Sciences & Technology(SCTIMST), Thiruvananthapuram .Period 1998-2010;10 years

Subspecialities  in which  contributed at SCTIMST:

• Cerebrovascular Surgery : Complex  aneurysms (eg : basilar  Apex aneurysms, ophthalmic  aneurysms, gaint  aneurysms) and AVMs
• Endoscopic Neurosurgery : Endoscopic  third  ventriculostomy , intraventricular  tumour surgery
• Functional Neurosurgery  : Epilepsy  surgery  and Surgery  for  Movement  disorders –DBS for Parkinson’s  Disease
• Spine Surgery  : Surgery  for  Craniovertebral  Junctions anormalies  Atlantoaxial  Dislocation ,Basilar Invagination ,Cervical spine  fusions  and  corpectomy ,intramedullary  tumours .
• Image Guided Surgery : For cerebral gliomas.

Senior Consultant Neurosurgeon – Vikram Hospital  ,Bangalore (June 2010-March 2014)

Senior Consultant Neurosurgeon ,Sagar Hospital ,Banashankari (April 2014-to date )

• Neurological society of India (RNS-67)
• Andra Pradesh neuroscientists association
• NSI ,Kerala chapter
• The Asia Oceanian  Skull Base Society
• Asian Congress  of  Cerebrovascular Surgeons
• Indian Society  of cerebrovascular  Surgery
• Skull base surgery society of India
• Congress of neurological surgeons,USA

• Visiting Faculty to Microsurgery skills laboratory  at AIIMS ,New Delhi  & have been involved  in designing  the curriculum  for training  young qualified  Neurosurgeons  to hone their skills .The most recent was held from November  29th  to December 1st 2013 ,which was attended by  neurosurgeons  from all over India  & from Russia .
• Visiting  Faculty  to Institutes  in Tamil Nadu  where  I have been instrumental  in establishing  Epilepsy  Surgery .I have performed  more than  100 epilepsy  surgeries  and was  given  an award  of excellence  by the  Governor  of Tamil Nadu  recently .
• Invited National Faculty  to various neurosurgical  subspecialty societies  like skull Base surgery  society  of India ,Cerebrovascular  Surgery  Society  of India  ,Neurological Society of India ,and Neurosurgical  Society of India  & have given Invited talks  and been  Involved  in Conducting  workshops  organized by these  societies .The Most recent  conference  was organized by Skull Base Surgery  of India    and was held at PGI ,Chandigarh in 2013 & at JIPMER PONDICHERRY in 2014

• OUTCOME  AFTER CORPUS CALLOSOTOMY IN CHILDERN  WITH INJURIOUS  DROP ATTACKS AND SEVERE MENTAL RETARDATION ,CHATURBHUJ RATHORE ,MATHEW  ABRAHAM ,RAVI MOHAN RAO ,ANNAMMA GEORGE,P SANKARA  SARMA ,KURUPATH RADHAKRISHAN ,BRAIN  & DEVELOPMENT 29 (2007) 577-585
• DISTAL ANTERIOR  CEREBRAL ARTERY  ANEURYMS : SURGICAL MANAGEMENT . B RAVI MOHAN RAO,R N BHATTACHARYA,N SURESH NAIR ,RAJNEESH K,R GIRISH MENON  ET AL.INDIAN JOURNAL  OF CEREBROVASCULAR  SURGERY  VOL 1 ,NO1,PP19-25,APRIL 2005.
• BASILAR ARTERY ANEURYMS.RN BHATTACHARYA  ,H V  EASWAR,BJ RAJESH,S NAIR ,G MENON ,B RAVI MOHAN RAO ET AL.INDIAN JOURNAL  OF CEREBROVASCULAR  SURGERY  VOL 1 ,NO1,PP6-14,APRIL 2005
• OPTHALMIC  SEGMENT  ANEURYSMS.N SURESH NAIR ,R GIRISH MENON ,HV EASWER ,B RM RAO,B J RAJESH ,RN  BHATTACHARYA .INDIAN JOURNAL  OF CEREBROVASCULAR  SURGERY  VOL 1,NO1 ,PP6-14,APRIL 2005.
• BRAINSTEM CAVENOMAS .EXPERIENCE  WITH 25 PATIENTS .G MENON , S NAIR, R N BHATTACHARYA , R IYENGAR, BRM RAO ET AL.INDIAN  JOURNAL OF CEREBROVASCULAR  SURGERY  VOL 1,NO 2 ,PP68-73,OCTOBER  2005.
• INTRACRANIAL ARTERIAL ANEURYMS IN CHILDEREN  AND ADOLOSCENTS.G MENON,SV FURTADO, S NAIR , RN BHATTACHARYA ,BRM RAO ET AL .INDIAN JOURNAL OF CEREBROVASCULAR SURGERY  VOL 1,NO2,PP80-84,OCTOBER 2005.
• SPONTANEOUS  INTRACEREBRAL  HAEMORRHAGE : STILL A SURGEON’S DILEMMA. S NAIR ,G NAIR,G MENON, T  MUTHURETNAM,MATHEW ABRAHAM,MUKUND PRASAD , BRM RAO ET AL INDIAN JOURNAL OF CEREBROVASCULAR SURGERY  VOL 1,NO2,PP100-106,OCTOBER 2005
• PETROCLIVAL MENINGIOMAS.S NAIR,BRM RAO, G MENON,RN BHATTACHARYA.PROGRESS IN CLINICAL NEURO SCIENCES ,VOLUME 19 : PP 79-100.2004
• CHANGING  TRENDS  IN THE MANAGEMENT  OF PINEAL  REGION  TUMORS .RN BHATTACHARYA .PROGRESS IN CLINICAL NEURO SCIENCES ,VOLUME IXX ,PP 101-127,2004.
• CURRENT PERSPECTIVES IN HEARING  PRESERVATION  IN LARGE  ACOUSTIC SCHWANNOMAS .SURESH NAIR,R M RAO,R KACHHARA,H V EASWER,B J RAJESH , T MUTHURETNAM, G MENON , RN  BHATTACHARYA .PROGRESS IN CLINICAL NEURO SCIENCES ,VOLUME IXX,PP 216—225,2004