Since each state has its own EMT and paramedic requirements, there is no across the board process to transferring your license. However one thing is for sure, if you are already nationally certified (not just state certified), transferring will be a lot easier. To give you an idea of the steps you may have to go through, the requirements of three states have been outlined below.
Steps to Transferring a Paramedic or EMT License
In Florida, if you are already a nationally certified EMT in good standing with another state, then you are eligible to become Florida-certified if you first complete the NREMT written basic assessment exam. The fees include a $35 application fee (made out to Florida's Department of Health or Florida's Medical Quality Assurance) and a $70 exam fee (made out to NREMT). In Florida, paramedics must pass a state test. The paramedic exam costs $45 to apply (also made out to Florida's Department of Health or Florida's Medical Quality Assurance). The $40 paramedic exam fee is made out to the exam vendor.
Texas will accept applicants if they are registered by another state and complete these steps: prove their state certification, fill out and turn in an EMS personnel out-of-state reciprocity application, pay the application fee, complete the Out of State Verification Form A for each state the applicant has worked in as an EMS, and apply for and pass the National Registry assessment exam (only if not nationally registered). Applicants are also subject to an FBI fingerprint criminal history check. If applying for a Texas EMT-I level license, then you must be able to verify that you have training in alternative airway devices, IV and PASG.
In New Jersey, the first step is to visit the State's EMT certification website and follow the "Reciprocity Application" link. You will be prompted with questions that you must answer before you are able to print out the application form. You must send this form to NREMT and every state office you are and have been registered with. They must fill these forms out and mail them back to you. You will also need copies of your state and/or NREMT registration cards, and your CPR card (online CPR certifications are not accepted). Once all this is in order, then you may send the complete package to the New Jersey Department of Health and Senior Services. After you are approved, you must complete a refresher program and pass the New Jersey Certification Examination.
As you can see, the steps you must take to transfer your EMS license are greatly varied, but there are some similarities. Most want you to be nationally registered and all want you to verify your state certification.