public function matchHealthcareStaff($name, $organizationId, $create = true)
    {
        $cacheId = __CLASS__ . '_' . __FUNCTION__;
        $matches = $this->cache->load($cacheId);

        if (! $matches) {
            $matches = array();
            $select     = $this->db->select();
            $select->from('gems__agenda_staff')
                    ->order('gas_name');

            $result = $this->db->fetchAll($select);
            foreach ($result as $row) {
                foreach (explode('|', $row['gas_match_to']) as $match) {
                    $matches[$match][$row['gas_id_organization']] = $row['gas_filter'] ? false : $row['gas_id_staff'];
                }
            }
            $this->cache->save($matches, $cacheId, array('staff'));
        }

        if (isset($matches[$name])) {
            if ($organizationId) {
                if (isset($matches[$name][$organizationId])) {
                    return $matches[$name][$organizationId];
                }
            } else {
                // Return the first location among the organizations
                return reset($matches[$name]);
            }
        }

        if (! $create) {
            return null;
        }

        $result = $this->addHealthcareStaff($name, $organizationId);

        return $result['gas_filter'] ? false : $result['gas_id_staff'];
    }