Formula for pulling most recent patient visit

[jonnyA]

Hello!

Looking for help to create a formula that will bring back the most recent patient visit.  For example, I have an excel file with 20,000 patient names, many of the patients are listed multiple times because they had multiple visits.  How would I create a formula that will only bring back the most recent visit?  Below are the fields I am using.  Thank you in advance!

[jonnyA · Accepted solution]

Thanks to everyone who responded!

I figured out the answer ...

Max Date = (MAX('ApptDetail'[Appt DateTime]))

[BI_Jo]

Hi 

I would create a latest visit column using the following DAX and use the column as a filter on your report:

LatestVisitColumn =
if('TableName'[Appt DateTime] = CALCULATE(MAX('TableName'[Appt DateTime]),

ALLEXCEPT('TableName','TableName'[Patient ID Field])), "Yes", "No")

The column will say "Yes" if it is the patients latest visit. 

Hope that helps

Jo

[amitchandak]

@jonnyA , Create a measure like this and try

Measure =
VAR __id = MAX ('Table'[Patient Last Name, First Name] )
VAR __date = CALCULATE ( MAX('Table'[App Date Time] ), ALLSELECTED ('Table' ), 'Table'[Patient Last Name, First Name] = __id )
CALCULATE ( MAx ('Table'[App Date Time] ), VALUES ('Table'[Patient Last Name, First Name] ),'Table'[Patient Last Name, First Name] = __id,'Table'[App Date Time] = __date )