The Very Reverend of a cathedral, whether a dean or a provost, is usually styled as "The Very Reverend" regardless of whether the priest is also the rector of the cathedral parish, or whether the cathedral is a parish church. In the Episcopal Church USA, the dean of a seminary or divinity school is also styled in this form, as is the priest who is either appointed by the local bishop or elected by fellow priests as the leader of a deanery, which is a geographic subdivision of a diocese. In some Episcopal dioceses convocation is used in lieu of deanery. The deans
Doctor (title) to address envelopes to medical doctors, omitting the pre-nominal title of Dr (e.g. John Smith, Esq, MD; John Smith, MD; John Smith, MB) except in Scotland and for general practitioners, where the post-nominals are instead usually omitted (e.g. Dr John Smith). Black's also state that it is down to individual choice whether non-medical doctors are addressed on envelopes as "Dr John Smith" or "John Smith, Esq, PhD" (or appropriate letters for the doctorate held), with the exception of doctors of divinity, who would be "The Rev. J. Smith, DD" on the envelope and "Reverend Sir" in a formal salutation (informally