Our new Main Line HealthCare Medicine - Main Line . Health (3 days ago) Main Line HealthCare (MLHC) physician network is pleased to welcome Linda Bullock, DO, Jean Haab, MD, and Stephanie McKnight, MD, to MLHC Medicine for Women located in Narberth, Pa. mainlinehealth.org. Main Line HealthCare Welcomes New Practice Focused on Women's Health..