Isaac Chauncy (1632-1712) was born in Ware, Hertfordshire. He then moved as a child with his family to New England, USA. He started his undergraduate studies at Harvard and completed them at Oxford on his return to the UK. In 1660 he became the rector of Woodbridge, Wiltshire until the 1662 Act of Uniformity. He then took up the pastorate at a congregational church in Andover, Hampshire.
While at Andover he became a physician and then moved to London to pursue this vocation and then became the pastor of an independent congregation. He was succeeded there by Isaac Watts, the hymn writer.
He continued as a physician while pastoring. He then became a divinity tutor at a Dissenting Academy in London.
Some of his writings are available here: http://www.prdl.org/author_view.php?a_id=1626