How do i contact marketplace customer service? Call us right now to get your Marketplace questions answered by a customer service representative, available 24/7: 1-800-318-2596 or (TTY: 1-855-889-4325)Where can i get help with marketplace? Call us right now to get your Marketplace questions answered by a customer service representative, available 24/7: 1-800-318-2596 or (TTY: 1-855-889-4325) Visit our Help Center to get all of our help resources in one place. What do you think of these new features?How do i contact the health insurance marketplace call center? If you have any questions about which documents to send, contact the Marketplace Call Center. Health Insurance Marketplace Attn: Appeals 465 Industrial Blvd London, KY 40750-0061 FAX: 1-877-369-0130What is marketplacers technology? Our technology is modular built and comprises of feature-rich marketplace Core technology which can be complemented with a front end solution, add ons and a connected community of partner businesses so that we can offer our customers a full stack technology solution. Why Marketplacer?