A private hospital has begun expansion work amid increased levels of patients from Huddersfield.
Spire hospital at Elland has launched a £2.5m project to create a third operating theatre.
Building work has begun and hospital chiefs hope to open the theatre in July 2015.
The investment is part of an overall plan to upgrade the hospital’s facilities, with £75,000 also being spent on ophthalmic services this year.
The hospital’s consultants are now able to provide eyesight correction lens implants which can free patients from having to wear contact lenses or glasses.
The multi-million spend comes six months after Huddersfield’s top GP said a lack of outpatient appointments at Huddersfield Royal Infirmary (HRI) was forcing people to choose private providers.
Under the NHS Choose and Book scheme, patients are entitled to pick private hospitals to receive NHS care.
The private hospitals have been able to capitalise on problems with doctor shortages in NHS hospitals, particularly for orthopaedics, ophthalmology and ENT (ear, nose and throat).
But the surge of people choosing Spire and BMI at Huddersfield has led to Greater Huddersfield Clinical Commissioning Group (CCG) spending more than planned with the two private hospitals.
Latest figures show the CCG is predicting it a £149,000 overspend on its £1.06m contract with Spire.
A £388,000 overspend on the £3.2m contract with BMI is forecast.
Meanwhile spending with the NHS hospitals, HRI, Calderdale Royal Hospital and Dewsbury and District Hospital is almost £3m less than predicted.