Before completing his Ph.D. degree from Aligarh Muslim University, Dr. Diwan Taskheer Khan did his SSC, bachelors, and MA in Philosophy also from the same university. He qualified UGC,NET and was awarded JRF and PDF from Indian Council of Philosophical Research (ICPR) New Delhi in 2003 and 2008 respectively.

Soon, after completing his Ph.D. from AMU, Dr. Diwan Joined as lecturer in University of Technology and Applied Sciences formerly known as Nizwa College of Technology (NCT), Sultanate of Oman. As a course coordinator of Formal Logic and Business Ethics Dr. Diwan developed the teaching materials for the students. Apart from his regular teaching duty he also held the administrative positions and was the members of some important committees in the NCT, Oman.
He was the head of Project Steering Committee and the Department project Committee in NCT. In 2019 he joined as Assistant Professor in the Department of Philosophy, AMU Aligarh. His areas of interest include Existentialism, Phenomenology, Hermeneutics, Ethics, Logic, Contemporary Western Philosophy, Sufism, and Islamic Philosophy. He is the author of two books, and also published more than a dozen articles and book chapters in the national and international journals. Besides, serving as a member of different academic bodies in India, Sultanate of Oman, Dr. Diwan is the editor in Chief of a reputed international peer reviewed journal named The Sapience:IJCRHSS and Associate editor and of three other reputed journals. He has expertise in online platforms like Moodle and Share points also.