Nicholas J. Day

Hematologist

📍 Wollongong

About of Nicholas J. Day

Nicholas J. Day is a hematologist based in Northfields Avenue, Wollongong, NSW 2522, Australia. He works with people who have blood-related conditions, and he also sees patients when blood health is affected by infections and other serious illnesses. Blood problems can make people feel wiped out, weak, or short of breath, so he focuses on steady, practical care that fits what’s going on day to day.


In many cases, his patients need help with issues like anemia and hemolytic anemia, where red blood cells don’t last as they should. At times, this can link in with problems such as low oxygen levels, fatigue, or jaundice. He also looks after people with thrombocytopenia, which means the body has a lower number of platelets and can lead to easy bruising or bleeding.


He also deals with conditions where the body’s response to illness can affect the blood. This can include infections seen in both regional and city settings, such as malaria, dengue fever, typhus, and other fever illnesses. You may also come across his work in cases involving sepsis, pneumonia, or more severe infections that can cause breathing issues, including pulmonary oedema or ARDS. When there’s metabolic strain as well—like metabolic acidosis—he helps make sure the blood side of the picture is properly assessed.


Some patients have rare red cell conditions too. For example, he works with glucose-6-phosphate dehydrogenase (G6PD) deficiency and alpha thalassaemia. These conditions can flare up under certain triggers, and getting the right plan early can make a big difference to how someone feels and how they recover.


Over time, Nicholas has built a calm approach to dealing with complex presentations. Blood issues often come with lots of stress, and results can take time to understand. He helps patients and families make sense of what the tests are showing, what might be happening, and what comes next.


His work is based around clear clinical judgement, careful monitoring, and coordination with the rest of the care team. That matters whether someone is being treated in hospital or being followed up for ongoing blood health needs. For anyone in Wollongong and surrounding areas, having a clinician who can link blood findings with the bigger health story can be really helpful.


If you’re looking for a hematology review in Wollongong, Nicholas J. Day offers support for blood conditions, including anemia, hemolysis, and platelet problems, alongside care for people affected by serious infections and related complications.

Services & Conditions Treated

Glucose-6-Phosphate Dehydrogenase DeficiencyMalariaMelioidosisTyphusHemolysisMetabolic AcidosisSalmonella EnterocolitisSepsisTyphoid FeverAcute Respiratory Distress Syndrome (ARDS)Alpha ThalassemiaAnemiaCongenital Hemolytic AnemiaCOVID-19Dengue FeverGiardia InfectionGlucose-6-Phosphate Translocase DeficiencyGrass AllergyHemolytic AnemiaHerpanginaJapanese EncephalitisLactic AcidosisLeptospirosisLow Blood PressureLymphofollicular HyperplasiaPneumoniaPrimary Amebic MeningoencephalitisPulmonary EdemaRickettsialpoxSevere Acute Respiratory Syndrome (SARS)Spotted FeverStrep ThroatTetanusThrombocytopeniaTogaviridae DiseaseTuberculous MeningitisUrinary Tract Infection in ChildrenViral Hemorrhagic Fever

Publications

1 total

Within-host modeling of primaquine-induced hemolysis in hemizygote glucose-6-phosphate dehydrogenase deficient healthy volunteers.

Antimicrobial agents and chemotherapy • February 24, 2025

Frequently Asked Questions

What specialty does Dr Nicholas J. Day practice in?
Dr Nicholas J. Day is a hematologist based in Wollongong, NSW.
What kinds of conditions does he treat?
He helps with blood and related conditions, including anemia, various forms of hemolysis, and other blood disorders listed in his services.
What services does he offer?
His listed services cover a wide range of infections, metabolic and blood disorders, and conditions affecting the blood and immune system.
How do I arrange an appointment?
To book an appointment, contact the Wollongong-based clinic in the area around Northfields Avenue, Wollongong, NSW 2522, Australia. The exact booking details can be provided by the clinic.
What should I bring to my first visit?
If you’re seeing him for a blood or infection-related issue, bring any relevant medical records, test results, and a list of current medications. If you’re unsure, ask the clinic staff what you should bring when you book.
Is the information about his services specific to patient concerns?
The listed services cover a broad range of conditions. If you’re concerned about a particular illness or symptom, mention it to the clinic so they can guide you on the appropriate tests or follow-up.