Accessing Custom Field Values

I have created a custom field for an external ID. I need to access that value on other joomla pages. Pages that are not in Membership Pro. Is there a way (plugin, or db query) to access that value?

I think I have a similar question. I have created a custom field and want to display it in an article. I'm building a reporting page with the following

<?php

$user =& JFactory::getUser();

if (!$user->guest) {
echo 'Hello ' . $user->name . '<br />';

echo '<br />You did the following cases';

}
?>

And want to add a custom field associated with the logged in user... I trield adding the custom field name 'osm_Profession' but nothing..

Paul