Forms :: Pop Up Form To Requery Two Other Forms

I new to this form and to access and hope to find an answer to my problem.

I have 3 tables and 3 forms

Table 1 - Form 1 --- Psych Patients
Table 2 - Form 2 --- Med patients.
Table 3 - Form 3 --- Primary Doctors.

Each form has a combo box with a list of Primary Doctors. If doctor is not in the list then we have the option to enter new information via Pop up form (form 3). At close the Pop up form requerys the cbo box.

Is there a way to use Form 3 (pop-up form) to re-query both forms at the same time even if only one of the forms is open?

FYI, Table 1 and Table 2 contain different information and the only thing both table have in common is the primary doctors.

As of now my code in the pop Up is:

Private Sub Form3_Close ()
Form_Form1!cboPhy.Requery
End Sub

Is the only alternative to create another form for the physicians and use it for Form 2?