MediSign uses the English language in the user interface.
All medical terminology is offered in English. However, you can add your own terms.
The communication between you and MediSign will be in English (support language, invoice language, etc).
You will get invoices from us in USD.
Regarding medical billing, you are able to use your own currency in your invoices (read more).

If these are acceptable to you, yes, you are welcome to use MediSign!