After acquiring his post graduate degree in Skin Diseases, Venereology & Leprology, Dr. Tannu started his career as lecturer in B.J. Medical College & Sasson General Hospital. With the thrust to acquire further knowledge he then acquired the diploma in the same science from Mumbai & Fellowship for Royal Society of Health, London. Post this, Dr. Tannu Started private practice in Pune. He was also a Visiting Specialist at many hospitals including Inlaks & Budhrani, Ruby Hall Clinic & Police General Hospital.