An appointment at Masterton Medical would be arranged before patients left the emergency department. People with limited mobility who were not accompanied by a support person would be offered assistance to get there.
Charge nurse manager acute services Jo Wailling said the pilot was a result of feedback and high patient numbers. Some patients felt it took too long to see a doctor. The aim also was to encourage people to consider seeing a GP before going to emergency.
"Our ED team sees about 17,000 people each year - that's around 3000 more than we were built to handle."
Ms Stringer said: "Patients requiring critical or urgent treatment will continue to be seen by the DHB's emergency department."
The pilot will run on weekdays for a month, before a review on whether to extend it to other primary care providers.
Outside Masterton Medical's standard week-day hours, people can contact Healthline on 0800 611116 or the on-call GP overnight by phoning their usual practice number for non-critical after-hours health care or advice.