you may need to download data unless you put up wifi in every corner of the hospital's winding hallways. and you have to be careful what you put up since some devices may interfere with heart monitors. my wife used to work in an ER and they had special cell phones they used.
and the iPad will need to be HIPAA certified before any medical professional will use it
This is a misunderstanding of what HIPAA is. HIPAA is federal legislation which protects the data privacy of patients. It is directed primarily at hospitals and staff, and governs who can have access to patient data and how that data is handled. Software systems used in health-care often provide reasonable safeguards for patient privacy, but the HIPAA legislation is targeted at the facilities and individual clinicians who use those systems, not at the systems themselves. HIPAA is not a certificating agency; there is no such thing as HIPAA certification for hardware devices.