My injury was caused by a nurse

My injury was caused by a nurse. Can I file a malpractice claim against a hospital employee who is not a doctor?

Yes you can, because the nurse is an employee of the hospital. It’s a concept called respondent superior, which means an employer is responsible for their employees. You not only can sue a nurse, but you can sue any other employee, such as a x-ray technician, such as a technician comes in and applies monitors to you, or does any other thing on behalf of the hospital as part of your medical care and treatment.