- Under Graduate Teacher from 1981.
- M.S. General Surgery - Post Graduate Teacher from 1981.
- M.Ch., Oncology Examiner from 1990.
- M.Ch., Oncology Examiner and Selection committee member from 1990.
- D.Nb. appraiser and Examiner from 2000.
- IMA clinical oncology course director from 2011.
- IMA Professor of Clinical Oncology from 2014.
- Emeritus Professor of Surgical Oncology, The Tamil Nadu Dr. M.G.R. Medical University from 2012 to till date.
- Professor and Head of the Department, Surgical Oncology, Govt. Rajaji Hospital and Madurai Medical College, Madurai from 1998 to 2011.
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Professor and Head of the Department, Surgical Oncology, Sri Ramachandra Medical University – Porur Chennai from 2011 – 2018.
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MBBS., Under Graduate student under Madurai Medical College, Madurai from 1971 to 1976 and own the medals.
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P.G. student in MS (General Surgery) under Madurai Medical College, Madurai from 1978 to 1981 and got the 1st rank in university and own the medals
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1981 – MNAMS., General Surgery
- Mutational and analysis of the candidate tumor suppressor gene INGI in Indian oral squamous cell carcinoma - in Oral Oncology 37 (2001) 222-224.
- The success rate of Fine Needle Aspiration of Cytology in Clinical palpable masses in Indian Journal of Oncology.
- Usage of imprint Cytology in establishing the diagnosis of Thyroid Neoplasms in Indian Journal of Surgery.
- Detection a rare point mutation at codon 59 and relatively high incidence of H-ras mutation in Indian Oral Cancer - in International Journal Of Oncology 13: 971-974, 1998.
- The effect of 3-week Tamoxifen treatment on estrogen receptor levels in primary breast tumours a flow cytometric study - in British Journal of Cancer (1988) 77 (10), 1657-1660.
- Assistant Professor in General Surgery, Madurai Medical College, Madurai from 1981 to 1985.
- Assistant Professor in Surgical Oncology, Govt. Cancer Hospital, Karapettai, Kanchipuram from 1987 to 1989.
- Assistant Professor in Surgical Oncology, Madurai Medical College from 1989 to 1998.
- Professor and HOD of Surgical Oncology, Madurai Medical College from 1998 to 2011.
- Emeritus Professor of Surgical Oncology, The TamilNadu Dr. M.G.R. Medical University from 2012 to till date.
- Honorable Professor of Oncology, Indian Medical Association from 2014.
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Professor and Head of the Department, Surgical Oncology, Sri Ramachandra Medical University – Porur Chennai from 2011 – 2018
