We have been using HelloSign for forms. I selected the essentials plan $180/year, which allows for 5 templates and unlimited signatures. HelloSign is like DocuSign but I find it easier to use (trialed both).
I think this kind of e-signature service is the only way to get completed forms back that look exactly like our paper forms. I have made fillable PDFs in the past and it works sometimes, but it doesn't always save or look right on patient's mobile phone or computer.
Serene Office Manager General Pediatrics Houston, Texas