Founded in 1983, IISI has become one of the leading managing general underwriters (MGU) of medical excess loss insurance in the country.

As a full-service MGU, IISI provides services on behalf of our insurance carrier partners. These services include marketing, underwriting, policy issuance, premium collection, managed care coordination and stop loss claim adjudication and payment.

IISI offers a full array of excess loss programs featuring employer stop loss for self-funded employers. We can also assist with facultative placements for non-traditional risks through worldwide reinsurance markets.

IISI's headquarters are in San Francisco, California and it has regional marketing offices in Pennsylvania and Florida. With our fully qualified and professional staff, IISI has the resources and systems to effectively service our growing client base.