A Letter of Qualification is the document at the center of the Interstate Medical Licensure Compact process. It is issued by a physician's state of principal license after that state reviews the physician's credentials, and it is what other member states rely on when processing an expedited license application.
How the letter fits into the process
The process typically begins with the physician designating a state of principal license, generally a state where the physician holds an active, unrestricted license and has some qualifying connection, such as residence, practice location, or place of employment. That state reviews the application materials, which commonly include verification of education, training, board certification, and disciplinary history, and if the physician meets the standards, issues the Letter of Qualification.
Eligibility considerations
Eligibility criteria generally focus on things like completion of an accredited medical degree program, successful completion of a recognized graduate medical education program, current specialty board certification in many cases, and a clean or largely clean disciplinary and criminal history. Physicians with any history of board action, malpractice history, or non-standard training pathways may still qualify, but the review is typically more involved, and outcomes can differ from state to state depending on how each board applies the standards.
The Letter of Qualification is a credential-verification tool, not a license itself — it opens a faster door into other states' licensing processes.
Using the letter across multiple states
Once issued, the Letter of Qualification is typically valid for a limited window and can be used to apply for licensure in multiple member states during that period. Each destination state still conducts its own review, may request additional information, and ultimately issues its own separate license under its own numbering, renewal schedule, and continuing education requirements. The letter reduces duplicative credential verification; it does not eliminate the destination state's independent authority to grant, condition, or deny a license.
Because the qualifying criteria and required supporting documents can change and are administered somewhat differently across the compact's member states, physicians generally find it useful to confirm current application steps directly with their intended state of principal license before applying. Requirements vary by state and change over time — always confirm current requirements directly with the relevant state board or agency before making a compliance decision.