Andrew Greenfield is the Principal Psychologist of Psych Support Assessment Services, a private practice in the Eastern, Northern and Western suburbs of Sydney. He is a fully registered Psychologist with the NSW Psychologists Registration Board and is a Full Member of the Australian Psychological Society. He is also a recognised provider with most private health funds in NSW.

Andrew has had over ten years experience working with children, adolescents and adults with Learning Difficulties, Attention Deficit Disorder and other developmental and behavioural problems, using major tests of general ability, academic attainment, continuous performance tasks and neuropsychological tests. 

For almost seven years, he has worked as a Senior Psychologist with the Sydney Developmental Clinic. He has also worked in the Department of Educational Psychology (Sydney University), The Child and Adolescent Psychological Centre, Kumon Education Study Centre and Royal South Sydney Community Health Centre. Andrew also works as a consultant to schools and other organisations across Sydney.

Andrew has appeared on Channel 9's 'TODAY show', ABC's 'Can We Help' Ask the Expert Segment, ABC radio and national station 2UE as well as other media sources.

Andrew is the 'Resident Psychologist' for the Australian Multiple Births Magazine (and also an identical twin himself). He is also a writer for the Practical Parenting magazine.