According to our records, this business is located at 444 Market St. in San Francisco (in San Francisco County), California 94111, the location GPS coordinates are: 37.7913821 (latitude), -122.3987964 (longitude). Willis Insurance Service Of CA Inc is categorized under Insurance Companies (SIC code 6411). Known organization chief executive officer is John Grotts. Current estimates show that the unit has a sales volume of $15,456,000 and staff of approximately 112 people. You can contact the company by phone at (415) 981-0600; the following fax number is also provided: (415) 398-4986.