WellMed offering 3,000 appointments for the Johnson & Johnson one-shot COVID-19 vaccine The appointments will take place for two days from Monday, April 12 to Tuesday, April 13 from 8 a.m. to 4 p.m. on each day. Author: KENS 5 Staff (KENS 5) Published: 12:30 PM CDT April 10, 2021 Updated: 12:42 PM CDT April 10, 2021 SAN ANTONIO — WellMed is opening appointments for more than 3,000 doses of the Johnson & Johnson/Janssen COVID-19 vaccine at the Doris Griffin Senior One-Stop Center. The appointments will take place for two days from Monday, April 12 to Tuesday, April 13 from 8 a.m. to 4 p.m. on each day. Anyone age 18 and older who needs to be vaccinated for COVID-19 can sign up online to get vaccinated. You can register at this website.