If you are caregiver to this person, I would try therapeutic fibbing and say that the doctor's office called to say that he needs a physical due to...something, insurance renewal, Obamacare, pneumonia vaccine. Send the doctor a note beforehand outlining the symptoms you are observing.
Nagging the patient will only make him dig his heals in about not going to the doctor.
You won't be lying if you tell him that the health insurance company will cancel him unless he has regular check-ups. The HMO's are sending wake-up calls.
Nagging the patient will only make him dig his heals in about not going to the doctor.