I was not able to find a simpler API that uses a field collection item id to get the node nid containing the field collection item. Currently, the only way I could find is by loading field collection via entity_load.

$model = entity_load_single('field_collection_item', $model_id);
$node = $model->hostEntity();
echo $node->nid;

Is there a simpler way to achieve this?

Source of code: http://drupal.stackexchange.com/questions/62877/get-node-id-of-field-col...