Dr. Timothy William is currently the Infectious Diseases Consultant of Jesselton Medical Centre Kota Kinabalu, Sabah and The Director of the Jesselton Medical Centre Infectious and Tropical Diseases Department. He is also the President of the Infectious Disease Society of Kota Kinabalu Sabah and an Horonary Clinical Fellow of the Menzies School of Health Research, Darwin Australia. He graduated from University of Malaya Kuala Lumpur in 1995. He became a Member of the Royal College of Physicians, United Kingdom in 2002 and later conferred to be a Fellow of the Royal College of Physicians of Edinburgh in 2014. He was trained to be a General Physician in Queen Elizabeth Hospital from 1999 to 2002 and then underwent Post Graduate Subspecialty Training in Infectious Diseases in Kuala Lumpur Hospital and the Royal Darwin Hospital, Australia.
Dr Timothy William was the Infectious Disease Consultant for the Queen Elizabeth Hospital, Kota Kinabalu and the Sabah State from 2006 to 2015. He is in the National Guideline Committee for Adult Vaccinations, HIV/AIDS, Malaria and Infection Control. He is also the lead person forming the Sabah State Guidelines for the Management of Malaria, Dengue, Cholera, and Leptospirosis. He obtained the Kuala Lumpur Rotary Club Award for Service in Managing patients with Severe Acute Respiratory Syndrome (SARS).He also led the Sabah State Clinical Management for the H1N1 Epidemic, Management for MERS/COV, H7N9 and Ebola.