For Referrers
Referring your patient to Dr Karthik Kumar
Thank you for referring your patient to Dr Karthik Kumar. We appreciate your confidence in his care and will ensure timely, ongoing communication regarding their assessment, investigations, and management plan throughout their journey with us.
Please email referrals to office@gosfordnephrology.com or use the contact form below. Urgent referrals should be clearly flagged and will be prioritised by our team.
Areas of Clinical Expertise
We accepts referrals across the full spectrum of kidney disease
Acute & Chronic Kidney Disease
Comprehensive workup and staged management of CKD — eGFR monitoring, proteinuria assessment, renal-protective strategies, and timely preparation for renal replacement therapy when required.
Dialysis & Transplantation
Pre-dialysis education, haemodialysis and peritoneal dialysis initiation across five units, ongoing dialysis management, and pre- and post-transplant assessment and care coordination.
Hypertension & Renovascular Disease
Resistant and secondary hypertension workup, renovascular disease assessment, renal artery imaging interpretation, and comprehensive cardiorenal risk reduction management.
Glomerulonephritis & Immunology
Renal biopsy interpretation, immunosuppressive therapy initiation and monitoring — IgA nephropathy, lupus nephritis, ANCA vasculitis, minimal change disease, and membranous nephropathy.
Diabetic & Metabolic Kidney Disease
Diabetic nephropathy management, SGLT2 inhibitor and GLP-1 optimisation, cardiorenal protection, metabolic bone disease, complex electrolyte disorders, and endocrine disturbances in nephrology.
Pregnancy-related & Geriatric Nephrology
Hypertension and kidney complications in pregnancy, pre-conception counselling for CKD patients, and specialist management of kidney disease in elderly patients including polypharmacy review.
How to Refer
Please include the patient’s current medication list, recent investigations (eGFR, creatinine, urinalysis, relevant imaging), and a brief clinical summary with your main question or concern. Urgent referrals — such as rapidly declining eGFR, hyperkalaemia, or hypertensive emergency — should be clearly flagged and our team will respond within 24 hours.
Email: office@gosfordnephrology.com | Fax: 02 4321 0125 | Phone: 02 4321 0555
From Our Referring Doctors
What colleagues say about working with Dr Kumar
Dr Kumar maintains regular, detailed communication with referring GPs and specialists — ensuring true continuity of care for every patient he manages.
Dr Kumar consistently provides thorough, timely reports after each consultation. My patients always come back well-informed and reassured. He is my go-to nephrologist on the Central Coast.
My collaboration with Dr Kumar on shared diabetic kidney disease patients has been outstanding. His reports are detailed, his communication is prompt, and his management is evidence-based and pragmatic.
I have been referring patients to Dr Kumar for over a decade. His expertise, ethical approach, and genuine care for patients make him an exceptional specialist partner for any GP.
