All Patient First Locations. Patient First operates CenterCount Neighborhood Medical Centers across the Mid-Atlantic region. Every center is open 365-days a year from 8 am to 8 pm. Walk-in, no appointment necessary. Each location has on-site x-ray, lab, and prescription drugs.Baltimore and Surrounding Areas‧Lake Ridge‧Wyomissing Urgent Care‧Patient First Pasadena‧Central Park‧Lutherville.