No, it doesn't matter that you're not a medical centre. HealthcareLink is for anyone who is looking for healthcare and medical professionals. So if you're looking for a GP, nurse, allied health professional (physio, natural therapies, massage, etc) or even admin staff, you're in the right place.
Let me know if you need further assistance, but the best place to start is to login into your account and update your profile. From there, you can explore your dashboard, set up your preferences and criteria for what you're looking for in a GP and post your job ad.
We also have a resources section, where there are sample job descriptions, that you can use to start you off.