MyHealthOne consolidates many common tasks into one secure, easy-to-use online patient portal. It gives you access to most of your medical records on your desktop computer, laptop, tablet or smartphone 24 hours a day. ... Medical City Plano 3901 West 15th St Plano, TX 75075 Main Number: (972) 596-6800 Physician Referral: (855) 665-8627. About ....