private void OnNewAddAdress(MedicalPractice obj)
{
if (Model == null)
{
return;
}
IsEditingAddress = false;
SelectedAddress = new MedicalPracticeAddress();
SelectedAddress.State = AvailableStates.Select(state => state).FirstOrDefault();
SelectedAddress.PropertyChanged += (o, e) => SelectedAddress.Validate();
ShowAddressPopup = Visibility.Visible;
}