Junior Resident-St. Johns Medical College, Bangalore-01.02.1989 to 28.02.1992,
Assistant Professor- Father Muller Medical College, Mangalore- 02.11.1992 to 31.05.1995, 01.06.1995 to 15.03.1997 and 20.10.2003 to 30.06.2004,
Associate Professor-Father Muller Medical College, Mangalore- 01.07.2004 to 31.03.2009,
Professor-Father Muller Medical College, Mangalore- 01.04.2009 to 16.03.2022 and 19.03.2022 to till date
General Surgery
Laparoscopic Surgery
EVLA
Chairperson of Central Library Committee
Pg Co-Ordinator of Surgery , Unit Chief
Association of Surgeons of India (No. 14193)
Indian Medical Association
Life Member of World Association of Laparoscopic Surgeons
Hillock on the back- A rare case of angiomyxoma of the back, Dr. Vishnu VK, Dr. John Joseph Martis, Dr. Vinod Kumar B, , Dr. Alphonsa Mary Job, Global Journal for Research Analysis, Vol. 11, Issue 9, September 2022
The incidence of persistence cervicalgia among students and the risk factors contributing towards it, Rahul P Nambiar, John Joseph S Martis, Reshmina Chnadni Clara Dsouza, Shubha N Rao, Manish Singh, Sheldon Mathias, Ip Indian Journal of anatomy and surgery of head neck and Brain 202: 6(2): 49-52.
MRI of brain Tumors- A Surgeons view, Lijin J L, John Joseph S. Matis, Reshmina Chandni Clara Dsouza, Elroy Saldanha, Peter penual Joshua, IP Indian Journal of Anatomy and surgery of head neck and brain, January- Narch 2018, 4(1): 18-19
Comparision of Tramadol drip versus local application ofprilocaine for ESWL, Anju Mahajan, Prashanth Adiga, Aaron Fernandez, John Joseph S Martis, Ip Journal of Urology, Nephrology and Hepatology Science, January- March 2021: 4(1),4-6
Knowledge and attitude of undergraduate students on oral cancer, Sheldon George Mathias, Reshmina Chandni Clara Dsouza, John Joseph S Martis, Shubha N Rao, Vinod Kumar, IP Inidan Journal of Anatomy and Surgery of Head, Neck and Brain, January-March 2018, :4(1):6-8.