As you might have encountered, the official MMC website http://mmc.gov.my has been down for over a month, and there is no clue for visitors since the administrators of the website did not provide a redirection or a new link.
Sivanewari wrote in :
Sometimes we received fake MC from staff so we check the doctor details use MMC reg no. But now we can’t check , kindly update us where we can check.
Well Sivanewari and others : you can visit the temporary MMC website which is http://mmc.moh.gov.my
The link to search for registered medical practitioners is at the bottom of the page as circled in the picture below