Dr. Alka is Director of Department of Nuclear Medicnine in Jaypee Hospital, Noida. Presently working as a Director in Nuclear Medicine Department at BLK Super Speciality Hospital, New Delhi. He previous Experiences are: Sr. Consultant – Fortis Escorts Heart Institute, New Delhi, Sr. Consultant & Head – Dr. B. L. Kapur Memorial Hospital, New Delhi, Consultant & Head – Dr. B. L. Kapur Memorial Hospital, New Delhi, Consultant & Head – Sitaram Bhartia Institute of Science & Research, New Delhi, Associate Consultant – Sitaram Bhartia Institute of Science & Research, New Delhi.