Trident Marketing International Inc. has agreed to sell health care discount cards for National Health Partners Inc.

Trident, Tampa, Fla., expects to generate up to 5,000 new members for the CarExpress program, according to National Health Partners, Tampa, Fla.

National Health Partners’ CarExpress card program charges $39.95 per month for access to discounts on medical services.

Trident has helped increase sales volume to 1,600 cards in July, from 600 in May, National Health Partners says.