Kaiser Permanente Hawaii is unveiling its new $12 million clinic today at Pearlridge Center in Aiea.

The 7,000-square-foot center will open Oct. 4 and offer family medicine and pediatrics, as well as a pharmacy and laboratory services. Kaiser eventually plans to expand the clinic to 12,000 square feet.

A dozen full-time employees will staff the clinic in Pearlridge Uptown at 98-1005 Moanalua Road.

The state’s largest health maintenance organization, which serves nearly 222,000 members at the Moanalua Medical Center and Clinic and 18 clinics statewide, is investing roughly $320 million over five years to expand its facilities across the islands.

In addition to Pearlridge, Kaiser is also opening this month a Maui Rehabilitation Specialty Center for occupational and physical therapy and neurology, as well as expanding the Koo­lau Clinic in Kaneohe, slated for completion in October.

The company also is building a 40,000-square-foot medical office building in North Kona scheduled for completion in mid-2014. And it recently expanded the Mauka Tower at Moanalua Medical Center.

The HMO said reinvestments into its facilities contributed in part to losses of $820,000 in the second quarter of this year.