With 27 years of experience, he has been associated with various prestigious hospitals and clinics. Currently, Dr. Ashish Mittal is working with Center for Occupational & Environmental Health (COEH), Lok Nayak Hospital,. He has previously practised medicine at Ranbaxy Laboratories Limited, Vill. Toansa, Distt. Nawanshahar, Punjab, Civil Hospital, Hoshiarpur, Punjab. Apart from hospital affiliations, he has been working actively in various fields. He is a member of Indian Medical Association (IMA), Indian Association of Occupational Health. He earned his MBBS from Dayanand Medical College & Hospital Ludhiana, Punjab. After that, he went on to do AFIH from CLI (Central Labour Institute), Directorate General Factory Advisory Service and Labour Institute, Mumbai and D.H.H.M from Indira Gandhi National Open University (IGNOU), New Delhi.