Mercy Clinic Primary Care - South Lindbergh. 4460 S. Lindbergh Boulevard St. Louis, MO 63127. Phone: (314) 843-7557. Schedule Online. 2. 1707.6 Miles away. Mercy Clinic Primary Care - Southfield Center. 5425 Southfield Center St. Louis, MO 63123. Phone: (314) 543-5258..