English to German Medical Certificates, Diplomas, Licenses, CVs

I have to translate several documents (e.g. student transcript, letters from the Colorado State Board of Nursing) for a customer who wants to relocate to Germany.
How do I translate the term and/or explain what a Licensed Practical Nurse (LPN) is as opposed to a Registered Nurse?
Is it more or less than a Gesundheits- und Krankenpfleger?

Thanks!