John Muir, Kaiser bringing vaccine clinic into Rossmoor ACOVID-19 vaccination clinic is coming to Rossmoor next month for residents who are 75 years or older, in a partnership with Contra Costa County, Kaiser Permanente, John Muir Health and the Golden Rain Foundation. John Muir Health (JMH) will operate the clinic at the Event Center starting Monday, Feb. 1, for its patients and any residents