Prof Ashok Rattan is a medical microbiologist by profession. He was conferred APJ Abdul Kalam Award for Lifetime Contribution to Medical Sciences in 2018 and Shriniwas Oration in 2021 by Indian Association of Microbiologists for his contribution to laboratory diagnosis of  Tuberculosis. He was Advisor in Pathkind Laboratories till Dec 2021. Now he is Chairman medical committee and quality of Redcliffe Laboratories.

He has held important positions in academics:

  1. All India Institute of Medical Sciences, New Delhi; (from Assistant Professor to Addl Professor)
    1. JN Medical college, Aligarh; (Demonstrator and Lecturer)
    1. Mahatma Gandhi Medical University, Jaipur (Prof & Head)
    1. Hamdard Institute of Medical Sciences and Research, New Delhi); (Professor)
    1. Sharjah Medical College, UAE (Visiting Professor)
  2. in industrial research [Ranbaxy New Drug Discovery (Director) and Fortis Clinical Research Ltd (CEO)]
  3. in Diagnostic labs [Religare SRL Diagnostics (Director), Star Metropolis (Medical Director and COO) and Pathkind Labs (Advisor)];
  4. in tertiary care hospital [(JN Medical College, AIIMS and Medanta the Medicity (Chairman, Laboratory Medicine)] and
  5. Public Health [CAREC, PAHO/WHO (Medical Microbiologist and Lab Director), Public Health Technology Transfer of PHFI (Consultant)]
  6. He has published over 100 research papers in peer reviewed international journals,
  7. guided over 40 students for their MD/MS/PhD and
  8. is named in 30 international patents.
  9. He is also the author of NBT sponsored book published by Churchill Livingstone, Antimicrobials in Laboratory Medicine (2000)
  10. Has contributed more than a dozen chapters in different books
  11. He has conducted workshops
    1. on WHONET in all nine SEARO countries;
    1. On different aspects of medical education in KL Wig CMET, AIIMS
    1. on Tuberculosis and Lab in care of HIV/AIDS in the Caribbean and
    1. Infections in Gynaecology in UAE, Oman and Behrain.
    1. On different aspects on laboratory diagnosis in the Pathkind Labs network.

While In college he captained the university cricket and Lawn Tennis teams.