By phone

Delta Dental DC 37 Dedicated Customer Service

Toll-free: 888-523-DC37(3237) (TTY/TDD 711)
Monday through Friday between 8 am and 8 pm, Eastern time

By mail

  • Delta Dental
    Corporate Headquarters
    One Delta Drive
    Mechanicsburg, PA 17055-6999
    Attention: DC 37 Dedicated Customer Service Unit


To file a patient grievance, use the secure form for your plan:

Send Delta Dental grievances to:

  • Delta Dental of California
    P.O. Box 997330
    Sacramento, CA 95899-7330

You can also report a grievance to Customer Service by phone at 888-523-3237 (toll-free) or by sending a fax to 916-631-6374.