Hello again Nataliette.
With my previous solution, did you create a loop inside the if-statement for when you have company posts?
<?php get_header(); ?>
<?php // if is a link to Read More from company single related post
if(isset($_GET['company'])){ ?>
<?php
$company_id = $_GET['company'];
Show all related posts from the company's singular page.
$doctors = get_posts(array(
'post_type' => 'doctor',
'meta_query' => array(
array(
'key' => 'location', // name of custom field
'value' => '"' . $company_id . '"', // matches exaclty "123", not just 123. This prevents a match for "1234"
'compare' => 'LIKE'
)
)
));
?>
<?php if( $doctors ): ?>
//ETC. This is not a full loop
?>
<?php } else { ?>
<?php while ( have_posts() ) : the_post(); // The Loop ?>
<?php get_template_part( 'content','excerpt' ); ?>
<?php endwhile; ?>
<?php } ?>
<?php get_footer(); ?>
