• FEB 92-FEB 93 INTERN – MEDICINE,SURGERY,PEDIATRICS,OBS & GYN CHRISTIAN MEDICAL COLLEGE AND HOSPITAL VELLORE,INDIA–632004
• FEB 93-JAN 94 NON-PG REGISTRAR,NEUROSURGERY CMCH, VELLORE, INDIA.
• JAN 94-JAN 97 REGISTRAR,NEUROSURGERY(This included 9 months of General Surgery, 6 weeks of Anaesthesia, 6 weeks of Orthopedics, 3 months of Neurology, 1 month of Neuropathology) CMCH, VELLORE, INDIA.
• JAN 97-JAN 99 SENIOR REGISTRAR,NEUROSURGERY(This included 3 months of Neurosurgical Intensive Care)CMCH, VELLORE, INDIA.
• APR 99-MAR 00 LECTURER,NEUROSURGERY CMCH, VELLORE, INDIA.
• MAR 00-JAN 03 FELLOW,NEUROSURGERY FLINDERS MEDICALCENTRE, ADELAIDE,AUSTRALIA 
• APR 03-CONSULTANT,NEUROSURGERY APOLLO HOSPITALS,HYDERABAD. 

• Jacob Chandy Medal for Best Clinical outgoing student 1991(MBBS)-CMC Vellore
• Jacob Chandy Medal for Neurosurgery 1999, CMC Vellore.
• Herbert Kraus Medal for Neuro Oncology, NSI Conference 1998

Research And Publications

• Lath R, Rajshekhar V : Unilateral foot drop.  Post Graduate Medical Journal 72:572-573, 1996.  
• Lath R, Rajshekhar V, George V : Brain abscess as the presenting feature of Melioidosis.  British Journal of Neurosurgery 12:170-172, 1998. 
• Lath R, Rajshekhar V, Chacko G : Sacral Haemangioma as a cause of coccydynia.Neuroradiology 40:524-526, 1998. 
• Lath R, Rajshekhar V : Solitary cysticercus granuloma of brainstem; report of four  cases.  Journal of Neurosurgery 89:1047-1051, 1998. 
• Lath R, Rajshekhar V : Transoral transpharyngeal approach to extradural cervico-medullary compression in children. A review of 17 cases.Neurology India  (Suppl.1) 47:37, 1999. (Abstract)
• Lath R, Chacko G, Chandy MJ : Determination of Ki-67 labeling index in pituitary adenomas using the MIB-1 monoclonal antibody. Neurology India 49:144-147, 2001.
• Lath R, Rajshekhar V : Massive cerebral infarction as a feature of pituitary apoplexy.  Neurology India 49:191-193, 2001.  
• Lath R, Vaniprasad A, Kat E, Brophy BP : Traumatic aneurysm of the callosomarginal artery. Case report.  Journal of Clinical Neuroscience 9(4):466-468, 2002. 
• Lath R, Unosson D, Stahl J, Blumbergs PC, Brophy BP : Rhabdoid Glioblastoma :case report.  Journal of Clinical Neuroscience 10(3):325-8;2003
• Psaltis A,  Lath R, McDonald M.  Acute interhemispheric subdural haematoma. Journal of Clinical Neuroscience 11(5) : 546-548, 2004.  
• Lath R, Ranjan A. Antero-lateral approach for thoraco-lumbar decompression and instrumentation. (Abstract) Neurology India  2004.  
• Lath R, Ranjan A, Swarnalata G.  Solitary fibrous tumour of the meninges. Letter to Editor.  Neurology India 53:248-249, 2005
• Lath R. Hyponatremia in Neurological Diseases in the ICU. Review Article.  Indian Journal of Critical Care Medicine 9;47-51: 2005.  
• Ranjan A, Lath R. Microendoscopic Discectomy for Prolapsed Lumbar Intervertebral disc. Neurology India 2006;54:190-194.  
• Lath R, Ranjan A Ratnam BG, Swarnalata G. Desmoplastic Fibroma of the Frontal Bone. Neurology India 2006;54:314-315. 
• Lath R, Ratnam BG, Ranjan A. Diagnosis and treatment of multiple Hydatid cysts at the Craniovertebral junction.  Journal of Neurosurgery (Spine) 2007;6:174-177.
• Padua MD, Prabhakar S, Lath R. Demyelinating Disease of the brain simulating a space occupying lesion. Indain Journal of Pathology and Microbiology 2008;51:569. Letter. 
• Ippili K, Ratnam BG, Gowrishankar S,Ranjan A, Lath R. Olfactory Ensheathing Cell Tumor : Case Report. Neurology India 2009;57:76-78. 
• Lath R, Kumar S, Reddy R, Boola GR, Ray A, Prabhakar S, Ranjan A.Decompressive surgery for severe Cerebral Venous Thrombosis Neurol India. 2010 May-Jun;58(3):392-7.
• Sharma P, Swain M, De Padua M, Ranjan A , Lath R. Rosette-Forming Glioneuronal Tumors:  A Report of 2 Cases. Neurology India 2011;59:276-80
• Sharma P, Ranjan A, Lath R.  Lumbar nerve root hernia: An unusual complication of micro-endoscopic discectomy. Neurol India. 2011;59:313-4
• Sharma P, Gowrishankar S, Ranjan A, Lath R.  Disseminated cranio-spinal mesenchymal chondrosarcoma.  Case report.  Neurol India. 2012 Mar-Apr;60(2):252-4.
• Mehrotra RN, Ranjan A, Lath R, Ratnam R. Postmenopausal osteoporosis: Our experience.Indian J Endocrinol Metab. 2012 Dec;16(Suppl 2):S421-2. 
• Reddy SR, Ratnam BG, Lath R, Ranjan A. The significance of redundant nerve roots of cauda equina. Neurol India. 2013 Sep-Oct;61(5):562. 
• Sharma P, Ranjan A, Lath R.  Arteriovenous fistula of the filum terminale misdiagnosed and previously operated as lower lumbar degenerative disease. Asian Spine J. 2014 Jun;8(3):365-70
• Reddy SR, Ranjan A, Lath R. Multifocal CNS vasculopathy due to reactivation of latent varicella – a potentially reversible complication following radiofrequency ablation for trigeminal neuralgia. Neurol India. 2014 May-Jun;62(3):327-9
• Reddy SM, Lath R, Swain M, Ranjan A. Chronic Lymphocytic Inflammation with Pontine Perivascular Enhancement Responsive to Steroids (CLIPPERS) - a case report.  Ann Indian Acad Neurol 2015;18:345-7.
• Reddy SR. Lath R, dePadua M, Ranjan A.  Meningioma with intra and peritumoural abscess.  Case Report.  Indian Journal of Neurosurgery.  Indian J Neurosurg 2017.
• Ranjan A, Lath R, Sidhu HS. The advent and growth of Medical tourism in India with reference to Neurosurgery. CNS Quarterly Spring 2017 Issue: 21-23.
• Manda SV, Kataria Y, Tatireddy BR ,Ramakrishnan B , Ratnam BG, Lath R, Ranjan A, Ray A. Exosomes as a biomarker platform for detecting Epidermal Growth Factor Receptor (EGFRvIII) positive high-grade gliomas. Journal of Neurosurgery. (June 2017)

• LIFE MEMBER OF THE NEUROLOGICAL SOCIETY OF INDIA (NSI)
• LIFE MEMBER INDIAN SOCIETY OF STEREOTACTIC AND FUNCTIONAL NEUROSURGERY (ISSFN) 
• INTERNATIONAL MEMBER, CONGRESS OF NEUROLOGICAL SURGEONS, USA.(CNS)
• LIFE MEMBER ANDHRA PRADESH NEUROSCIENTISTS ASSOCIATION (APNSA)
• MEMBER ASIAN AUSTRALASIAN SOCIETY OF STEREOTACTIC AND FUNCTIONAL NEUROSURGERY (AASSFN)
• MEMBER WORLD SOCIETY OF STEROETACTIC AND FUNCTIONAL NEUROSURGERY (WSSFN)