Need to disable autocomplete for date field

Problem: The Medportal Application has Date fields that are
autocompleting upon a user entering a numerical value.

An example:

In a Date field, a user enters a value of '1' and then hits
the TAB key to switch fields.  The '1' will be autocompleted into
'1/1/2017' and this is undesired behavior.

Likewise, if the user enters a '12' then TABS to switch
fields, the '12' will be autocompleted into '12/1/2017'.

We would appreciate any guidance
you can offer on how we can disable/preempt the autocomplete feature here.

Thanks,

Patrick