• Dr. A.J. Chitkara after senior residency, was Assistant professor in Pediatrics at Maulana Azad Medical College and associated LNJP & GB Pant Hospitals New Delhi till 1987. Since then consultant in pediatrics at various private hospitals. Joined Max Hospital, Pitampura in October 2005, Max superspeciality Hospital, Shalimar Bagh, Delhi in 2013 and currently Director &Head Pediatrics.

• He is a member of Asian Society for Pediatric Infectious Diseases (ASPID) (1999),Indian Academy of Pediatrics Committee on Immunization (IAPCOI) (2000 - 2002) (2010 - 2012),Founding Member - Influenza Foundation of India (IFI), to spread awareness about Influenza disease & its prevention,Editorial Board Member - Indian Pediatrics,Editorial Board Member - Pediatrics Today,Editorial Board Member - Journal of Pediatrics Infectious Diseases (Turkey)

• International Fellow, American Academy of Pediatrics (AAP) 2004

• Fellow, Indian Academy of Pediatrics (2007)

• Chairperson, 2014, IAP Infectious diseases chapter.