Filter the field return value before display via the [pmpro_member] shortcode.

apply_filters( 'pmpro_member_shortcode_field', string $r, int $user_id, string $field );

Parameters

$r

string; The value of the field

$user_id

integer

$field

string; The field key being queried

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/shortcodes/pmpro_member.php