Help On Patient/physician Case Management File

Hello,

I need some help.

I have the following tables:

Patient demographic info (Patient ID, First Name, Last Name, Address, date of birth, etc...)
Physician demographic info (Physician ID, Name, Last Name, Specialty, Phone, Fax


I also have another table with patients that are being case managed. I have those ID#'s. However, I want to be able to auto-populate a form with the patient's demographic info by only typing the patient ID. Also, there are cases when the patient ID will not be in the patient demographic info table. Therefore, I will need to enter all their demographic info manually.

Same with the physician. I want to be able to select the physician and auto-populate the demographic info. However, there are occassions where the physician will not be in the main file...therefore, I'd like to add that info manually.

Please help.