You will still need to register with the FIPS even if you have a MD saltwater license. All persons on the boat will need to register. You can register by phone or online.
http://www.mrc.virginia.gov/fip/
The Virginia Fisherman Identification Program is a state program to register saltwater anglers every year without charge.
Anglers can register online or by calling toll-free 1-800-723-2728. Registration is quick, easy, and free. Yes, it's free.