No. Don't even consider it. Excel passwords are not secure, and this
sounds like information that needs to be kept secure.

Why 44 spreadsheets, not 22? At least put all the information for one
practice into one workbook.

OTOH, if the information is not confidential, why not just let the practices
select their appropriate sheets from the sheet tab, or some navigation
facility on a front sheet? (Passwords wouldn't be needed.)