Can a doctor refuse to see a patient even though they have medical insurance making them pay in cash?

Yes, a doctor can refuse to see a patient even if they have medical insurance, depending on the policies of their practice and the specific circumstances. This could occur if the doctor is not in-network with the patient's insurance provider or if the patient has a history of non-payment or missed appointments. However, if a doctor refuses to see a patient, they must generally provide appropriate referrals or emergency care as needed.