Dr Chang was the on call nephrologist when my dialysis unit called for guidance concerning an inr of over 6. Her instructions were for me to hold my dose for 3 days with no questions asked. Knowing this was a bad idea as a week before I had held my dose only one day and my inr went from 4.6 to 2.1 I disagreed wholeheartedly. 4 days later and I am now in the hospital at high risk of stroke with an inr of 1.3. I only held my dose for 2 days going against her direction of 3 days. I feel like she was trying to kill me. I have been completely stressed out for days and my blood pressure reflects that. Further, when I asked the nurse to get me a lab order to have my extremely high inr rechecked a few days later, I was told that she completely reamed him for asking. Two hours later, she faxed the order. Very unprofessional and dangerously incompetent.