Northeastern Health System Tahlequah Patient Portal Medical … Health (8 days ago) Northeastern Health Systems Tahlequah Patient Portal. Health (3 days ago) Northeastern Health System - Tahlequah. Health (8 days ago) Recruiter/Contact Person CJ Jankas, VP [email protected] (918) 456-0641 P.O. Box 1008 Tahlequah, OK 74465..