There is currently one Midlands location on the list of places accepting walk-ins. Author: WLTX Updated: 6:16 PM EST January 27, 2021 COLUMBIA, S.C. — Prisma Health has reopened walk-in COVID-19 vaccinations for those in phase 1a who do not have computer access. According to Prisma Health, the walk-ins will be based on vaccine availability and the health system will calculate the walk-in availability every day based on appointments. Limited walk-in appointments for vaccines will be allowed at the following locations: Gamecock Park, 22 National Guard Road, Columbia Kmart site at 1 Kmart Plaza, Greenville Prisma Health Tuomey Hospital Prisma Health Laurens County Hospital Prisma Health Oconee Memorial Hospital