He resigned last month after criticising the government's approach to the pandemic.
People are being asked to stay in their county and keep social contacts down as part of Level 3 Covid-19 restrictions which came in overnight.
It means pubs and restaurants can stay open, but are limited to outdoor seating for a maximum of 15 people.
All religious services are to move online and just 25 people can attend weddings and funerals.
However, more restrictions aren't being ruled out with the Tanaiste Leo Varadkar telling members of his party a circuit breaker is being considered.
The former Clinical Director of the Dublin Midlands Hospital Group, Dr. Martin Feeley - who resigned after criticising the government's approach to covid-19 - believes the latest restrictions are too severe.