Esther,
One way to do this is to have used two separate co-pay types for doctor visits vs. prescriptions.
Assuming you've entered a lot of records at this point - probably defaulting to the 'Co-Pay' expense type - we've created an OpenHealth Service (OHS) Plug-in for you. The attached plug-in when installed will generate a report for all Medical Visit Co-Pays.
Just download, unzip and double-click to install this new Plug-In.
We'll upload a new plug-in for prescription co-pays.
Thanks for your feedback!
Support Team