NHIC Corp. will process Medicare payment claims from health care providers in four Northwestern states under a $148 million contract from the Centers for Medicare and Medicaid Services.

The contract, which has a one-year base period and four one-year options, will serve about 54,000 physicians and health care practitioners and 233 hospitals in Alaska, Idaho, Oregon and Washington state.

NHIC, a subsidiary of EDS Corp., will provide a variety of administrative functions for hospitals, skilled nursing facilities and physicians in those states and will be the providers’ first point of contact for processing and payment of Medicare Parts A and B fee-for-service claims.

The company will also handle appeals, audits and reimbursements, provider enrollment, educational outreach, print and mail services, financial and accounting services, contact-center support, electronic data exchange, mailroom operations, and medical and utilization reviews.

The contract will help CMS meet the requirements of the Medicare Modernization Act of 2003, which requires the agency to transition Medicare fee-for-service claims from fiscal intermediaries and carriers to Medicare administrative contractors, NHIC said in a statement.

NHIC is one of the largest Medicare Part B contractors in the country, serving more than 150,000 health care providers in California, Maine, Massachusetts, New Hampshire and Vermont.

EDS, of Plano, Texas, ranks No. 10 on Washington Technology’s 2008 Top 100 list of the largest federal government prime contractors.