Gezienus (or Gesinus) ten Doesschate (11 August 1885 in Zwolle – 9 March 1965 in Utrecht) was a Dutch ophthalmologist, amateur painter and historian.
[1] He was active as an amateur painter in Utrecht under the pseudonym Thomas Denier.
[3] In 1916 he was briefly a member of de Anderen, a Dutch artists' group that included Theo van Doesburg, but dropped out in support of de Winter, another artists group.
At the end of his life he contributed to a number of medical-historical books concerning the University of Utrecht.
[4] His son was Jurriaan ten Doesschate (1912–1977), ophthalmologist and medical scientist