The following is required to get a POP ID:
First Name
Last Name
State
then, to log in (not required to participate in tourneys, nor to obtain the ID), one must provide dat of birth. If under 13, the profile isn't divulged (nor editable), at this time.
The only info displayed as part of the tournament results are:
Name: name
Handle: (usually blank)
State: MA
Country: US
Global Rank: nn
Global Score: nnnn
Match History
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Matches Won: 11
Matches Lost: 5
Matches Tied: 0
Total Matches Played: 16
HTH!