#!usr/bin/perl -w
use strict;

# I suspect that you left off a ";" after Boop, Elizabeth PHD
# I add added that to the test data below.

my $file_data =qq(
  Builder, Bob  ;Stein, Franklin MSW; Boop, Elizabeth PHD ; Cc: Bear, Izzy;  
  SomeGuy,  Guy;  Einstein  , Albert  PHD; );
#
#yes, you can open a scalar for read with a filehandle!
#there is some "weirdness" about this, but the idea does work!
  
open (my $in, "<", \$file_data) or die "can't open input file $!";

while (my $line =<$in>)
{
    next if $line =~ m/^\s*$/;    # skip blank lines
    chomp ($line);
    $line =~ s/CC://i;
    $line =~ s/\s+$//;   #gets rid of trailing \n
                         #I suspect that this is an artifact
                         #of the way the file is opened??
                         
    my @whole_name_titles = split(/;/,$line);
    
    foreach my $name (@whole_name_titles)
    {
       $name =~ s/\s+[A-Z]+\s*$//; #Skip trailing cap letters
       $name =~ s/\s+//g;          #compress spaces
       print "$name\n";            #push to DB or whatever here...
    }   
}

__END__
Prints:
Builder,Bob
Stein,Franklin
Boop,Elizabeth
Bear,Izzy
SomeGuy,Guy
Einstein,Albert