Manaaki Mamao monitors blood pressure among Māori and Pasifika, providing early intervention to reduce strokes and heart attacks.
Kuia Dolly Paul is among 140 people taking part in the pilot programme.
Each participant is given a device and blood pressure cuff to monitor and record their vitals daily from the comfort of their home.
"I was always feeling sleepy or lethargic," she said.
St John national Māori advisor Malcolm Kendall said for many of the participants, the blood pressure readings "gives them insight into their blood pressure that they've never had before".
If a reading is abnormal, patients are contacted by a St John clinician and their doctor, and given advice on their next steps.
"It's all about being proactive and acting early to ensure that they get the right help," Kendall said.
The programme has shown positive results, with 70% of patients having reduced blood pressure.
"Clinicians have commented on how it enables them to better manage the medications, but it also means that we can have an impact on hospital admissions as well."
However, the service is struggling to stay afloat due to a lack of funding.
"We know that this intervention works," he said.
"It's really important for us to continue this programme."
It's hoped the programme's proven success will mean the service is extended to other communities and regions.
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