Marcie Aldridge CFNP is a dedicated physician at Southwest Mississippi Regional Medical Center. ... McComb, MS 39648 601-249-4415 More Information; Marcie Aldridge ... Locations; Patient & Visitors; Employee Portal; For Physicians; Bill Payment; Patient Portal; 215 Marion Avenue McComb, MS 39648 P.O. Box 1307 McComb, MS 39649 Map + Directions ....