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iiSi’s Headquarters Has a New Address

May 01, 2024

After a decade at our prior location, iiSi is excited to announce that we've moved our headquarters to 101 Montgomery Street in San Francisco's financial district. Also known as "The Schwab Building," 101 Montgomery Street's construction was completed in 1984 and was originally the headquarters for Charles Schwab & Company. You'll find us on the 8th floor in suite 800. Please update your records with our new address as follows:

iiSi, a division of Companion Life Insurance Company
101 Montgomery Street, Suite 800
San Francisco, CA 94104



About iiSi

Founded in 1983 as Intermediary Insurance Services, Inc., iiSi, A Division of Companion Life Insurance Company (www.iisinet.com) offers a full array of excess loss programs featuring employer stop loss for self-funded employers. iiSi provides a full range of services including marketing, underwriting, policy issuance, premium collection, managed care coordination, and claim adjudication and payment. Marketing is carried out on a national scale, serving brokers, consultants, and third-party administrators with their stop loss needs. Reference Based Pricing is one particular area of focus and iiSi has emerged as a recognized leader in the space.

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