Chai Urgent Care, Mill Basin is an urgent care center in Brooklyn, located at 5322 Avenue N. They are open 7 days a week, including today from 10:00AM to 4:00PM seeing walk-in patients with non-emergent healthcare conditions. Unlike most urgent care and walk-in clinics, Chai Urgent Care, Mill Basin offers you the ability to book online in advance through Solv prior to arriving at the clinic..