Final answer:
As a medical assistant, you should respect the physician's decision to no longer treat a patient who refuses to follow the treatment plan and medical advice. Uphold patient confidentiality and do not disclose any sensitive information.
Step-by-step explanation:
In this scenario, as a medical assistant, the appropriate procedure to follow when a physician informs you that they will no longer treat a patient who refuses to follow the treatment plan and medical advice is to respect the physician's decision.
It is important to uphold the autonomy and professional judgment of the physician. It is also essential to maintain patient confidentiality and not disclose any sensitive information regarding the patient.