I'm not an expert, but I think that, yes, they would almost certainly be susceptible for scraping. You will probably need to be very careful about displaying users' contact information in the application as the information may be protected/require different procedures in certain jurisdictions. Are all of your data providers willing to be contacted in this manner?
If you really want the users' to be contactable, why not create some sort of form that visitors to the app can fill in which sends their question to the data provider. This may let you hide the contact information from the user, control the format of the email that is sent, and potentially combat spam/abuse if you put the email addresses in plain text in the app itself.