doctor/
    controllers/
        Doc_master.php
        configuration/
            Department.php
            Specialty.php
            SubDept.php
            SubDeptSpcltyMap.php
        patient_portal_api/
            Apidoctorspeciality.php
    models/
        Doctor_model.php
        Doctor_model_api.php
    views/
        doctList.php
        configuration/
            department/
                department_list.php
                doc_dept_form.php
            specialty/
                doc_spclty_form.php
                specialty_list.php
            sub_department/
                doc_sub_dept_form.php
                sub_department_list.php
            sub_dept_spclty_map/
                doc_spclty_mapping_form.php
                map_list.php