For Patients
Everything you need to know before your visit
We want your appointment with Dr Karthik Kumar to be as smooth and comfortable as possible. Please read the information below so you come fully prepared and can make the most of your consultation time.
A valid referral from your GP or specialist is required for Medicare rebates. If you have not yet organised a referral, please contact your GP before booking.
Preparing for Your Visit
Please bring the following items to your appointment
Medicare, DVA & Pension Cards
Please bring your Medicare card and, if applicable, your DVA (Department of Veterans’ Affairs) card and Pension card. These are required for billing and Medicare rebate eligibility.
Referral Letter
A valid referral from your GP or specialist is required for Medicare rebates and continuity of care. If your referrer sent it directly, please confirm with our rooms before your appointment.
All Current Medications
Bring a complete list of ALL medications — prescriptions, over-the-counter medicines, vitamins, and supplements. This helps Dr Kumar check for interactions and tailor your care plan safely.
Recent Blood Tests & Imaging
If your GP has ordered recent blood tests, urinalysis, or imaging reports, please bring those results or ensure they have been forwarded to us. Dr Kumar may arrange new investigations if needed.
Past Health Records & Discharge Summaries
Any relevant past health records, specialist letters, or hospital discharge summaries help Dr Kumar understand your full history and provide the most appropriate care from your very first visit.
Your Questions for Dr Kumar
It is very common to forget what you wanted to ask during a consultation. Write down a list of questions or concerns beforehand so you get the very most from your appointment time.
Arrive 10–15 minutes early. Avoid coffee, tea, alcohol, or smoking before your visit, as these can affect blood pressure readings.
Please try to stay relaxed before your appointment. A calm mind and body make the consultation more comfortable and accurate. For the comfort of all visitors, our premises are strictly non-smoking. If you are running late, please call us as soon as possible and we will do our best to accommodate you.
Phone: 02 4321 0555 | Fax: 02 4321 0125
Need a Consultation?
Book Your Appointment with Dr. Karthik Kumar
Schedule your consultation with Dr. Karthik Kumar for expert care and personalized treatment. Appointments are available for patients across Central Coast and Sydney communities. Book your visit today and take the next step toward better health.
02 4321 0555
02 4321 0125
Patient Stories
Results that speak for themselves
Hear from patients across the Central Coast and Sydney who have experienced Dr Kumar’s compassionate, expert kidney care.
I’m accustomed to dealing with professionals, but Dr Kumar went well beyond our expectations. He clearly has an extremely high level of expertise and we immediately felt like we were in excellent hands. His staff at Hills Street were equally compassionate and wonderful.
Dr Kumar is one of the most professional specialists I have had the pleasure to deal with. He has helped me through a very difficult illness. His caring nature and his thoughtfulness are second to none. The same goes for Dr Ratnavadivel and their team, especially Louise.
One of the fine and best nephrologist I have dealt with. Always his diagnosis is spot on and explains well and clear. He always follow up by calling how the patient feel etc. We feel very comfortable to discuss and deal with him.