Stamford Bridge's Millennium Hotel helped to accommodate NHS staff, while Chelsea made financial donations.
London was the early epicentre of the COVID-19 pandemic in the United Kingdom.
Chelsea quickly responded by offering assistance to the National Health Service and charities supporting elderly and vulnerable groups.
The club provided more than 115,000 free meals to five nearby hospitals and offered the Millennium and Copthorne hotels at Stamford Bridge as accommodation for NHS staff.
In addition to this, Chelsea worked with a wide range of charities that support the elderly, the vulnerable and those who live in sheltered accommodation.
Head coach Frank Lampard and his first-team squad also offered their help and made financial donations.
All Premier League players wore the NHS logo on their shirts following the restart.
"All the healthcare professionals who are doing everything they can, they are the real heroes," Chelsea midfielder Jorginho said.
"They are there on the front line, making sacrifices and putting their own life at risk to save the lives of others, shift after shift.
"I believe they deserve all the support in the world."