Van januari 1978 tot en met maart 2010 was Jan Veenstra directeur van Verenigd Ziekenvervoer Amsterdam (VZA). Ter gelegenheid van zijn vertrek werd een stichting naar hem genoemd: de Jan Veenstra Stichting. Op zijn afscheidsreceptie ontving hij de statuten van de stichting, waarin ondermeer het doel is beschreven van de stichting: het aanbieden van vervoer door de WensenAmbulance.
Het bestuur van de Jan Veenstra Stichting bestaat uit de volgende leden:
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Voorzitter
Secretaris
Penningmeester