COVID-19 Vaccine Info Pfizer and Moderna COVID-19 booster vaccinations will be available by APPOINTMENT ONLY beginning, Monday, October 25, 2021, to established patients of Calvert Internal Medicine Group. Non established patients can receive the 1st and or 2nd dose of the Pfizer or Moderna COVID-19 Vaccine. Please call 410-535-2005 or visit our website at Calvertmedicine.com […].