You're a hospitalist in a large referral hospital, and you have just discharged a patient who suffered a stroke due to high blood pressure. You've used many strategies, such as Ask-Tell-Ask, shared decision making, and brief action planning with the patient. The patient's primary care doctor says he will follow up with the patient. Two weeks later, the patient is back in the hospital, and you find out the primary care doctor never followed up. What's the best thing to do next?