Using Windows XP is not a HIPAA violation. There is no proof that medical records are even stored on that particular computer or on any computer. Odds are he uses paper records still or he is using a third party program for the records such as Epic or Meditech. Idiotic article. A significant portion of Doctor's and hospitals use WinXP still - I spent the previous two years upgrading some hospitals to Epic and Win7. I moved on but the project is still going on.
Plus he could have Win7 and changed the start bar to look like WinXP.
It's most likely an XP system, but that picture could be old.