Kaiser Permanente is investing $60 million to build a medical office building in Kapolei to expand care for West Oahu residents.

The state’s largest health maintenance organization — both a medical provider and health insurer — will build a 40,000-square-foot medical office that will include primary and specialty care, as well as prevention and wellness programs, on 5.4 acres of land at the corner of Kapo­lei Parkway and Kamokila Boulevard, which Kaiser purchased in 2008. The project is expected to be completed in 2021.

“Our new medical office will provide thousands of members in West Oahu with greater access to primary and specialty care and serv­ices, closer to where they live and work,” said Dave Underriner, president of Kaiser Foundation Health Plan and Hospitals, Hawaii region.

West Oahu’s growing population is driving the demand for services. Kaiser said it anticipates continued growth and will scale to the needs of the community.

“We’re particularly excited about this new medical office, because it gives us an opportunity to implement some innovative ways to deliver care to our members in West Oahu,” said Dr. Geoff Sewell, president and executive medical director of Hawaii Permanente Medical Group. “This medical office will be much more than a place where people who are sick come to get treatment from their physicians and providers, we envision it becoming an active center for health and wellness for families in the community.”

Meanwhile the Queen’s Health Systems is also planning an expansion that will double the number of facilities at its West Oahu campus.

A site plan obtained by the Honolulu Star-Advertiser last month shows a second hospital tower where the emergency parking lot is adjacent to an existing hospital building at The Queen’s Medical Center-West Oahu; another physicians building replacing an existing parking lot; and a new parking garage to be built on a grassy area of the property.

Queen’s wouldn’t disclose how much it is investing in the expansion or details of the renovation plans, but said work on the parking garage is scheduled to start in early 2019 and wrap up in 2020.