| Business | Phone |
| Medical Billing Unlimited 4514 Rockdale Rd, Greencastle 17225 | (717) 369-4417 |
| Professional Billing & Mgmt 60 S Washington St, Greencastle 17225 | (717) 597-7044 |
| Professional Billing Svc 60 S Washington St, Greencastle 17225 | (717) 263-5562 |