Hi, this is what my design looks like. I had to change doc man's suggestion a little bit.
tblPerson
fldPersID, autonumber, PK
fldFirstN, text
fldMidN, text
fldLastN, text
fldGender
tblDoctors
fldPersID, Long, FK
ClinicID, FK
Specialty
Email
etc
tblClients
fldPersID, Long, FK
DOB...