How do you contact the guardian? customer.help@ theguardian.com. Phone: 1-844-632-2010 (toll free USA) +1 917-900-4663 (outside USA) 9am - 5pm on weekdays (EST/EDT) Or use our contact form to get in touch and we’ll get back to you as soon as possible. Take me to the form.What is guardian phone number? Phone Number of Guardian Health Insurance is (1-888-482-7342) . The Guardian insurance agency is an insurance agency based in New York, United States Of America. The insurance agency of Guardian was launched in the year of 1860.What is the phone number for guardian insurance? The customer support phone number of Guardian Insurance is +1 212-598-8000 / 866-302-4542 / 866-494-4542 (Click phone number to call).What is the phone number for guardian vision insurance? Guardian Vision Customer Service Phone Number. Phone Number of Guardian Vision is 1-888-482-7342 . Guardian Vision is the leading insurance agency based in America. Guardian Vision is created in the year of 1980. The company concentrates on eye care, vision care, vision disease management and eye wellness services.