Westchester Health Northwell Patient Portal. Health (6 days ago) Westchester NY Healthcare Westchester Health Patient Portal. Health (8 days ago) You may contact the Patient Portal Team at (914) 232-1919 option #3, email the Portal WHM-Portal@northwell.edu or you may request access at your next visit.While in your doctor's office, inform staff that you wish to enroll in the Patient Portal...