XMLParser skipping to the last tag in a set of tags

Using xml: XMLParser skipping to the last tag in a set of tags on newest questions tagged xml – Stack Overflow

I am reading an XML file into a datatable like this:

DataTable dt = XMLParser.XMLRead.ReadeFormXMLFile(filePath, "my:myFields");

however it is not capturing ALL the fields.

There are multiple practitionerlastnames and practitionerfirstnames and practitionerNPIs:

 <my:group1>
    <my:group2>
      <my:PractitionerFirstName>Joe</my:PractitionerFirstName>
      <my:PractitionerLastName>Limits</my:PractitionerLastName>
      <my:PractitionerNPI>0987654321</my:PractitionerNPI>
      <my:PractitionerDegree>MD</my:PractitionerDegree>
    </my:group2>
    <my:group2 xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2012-02-06T05:56:10">
       <my:PractitionerFirstName>Him</my:PractitionerFirstName>
       <my:PractitionerLastName>Haw</my:PractitionerLastName>
       <my:PractitionerNPI>1234567890</my:PractitionerNPI>
       <my:PractitionerDegree>PA</my:PractitionerDegree>
     </my:group2>
     <my:group2 xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2012-02-06T05:56:10">
        <my:PractitionerFirstName>Mike</my:PractitionerFirstName>
        <my:PractitionerLastName>Kim</my:PractitionerLastName>
        <my:PractitionerNPI>1234567890</my:PractitionerNPI>
        <my:PractitionerDegree>DO</my:PractitionerDegree>
     </my:group2>
     <my:group2 xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2012-02-06T05:56:10">
       <my:PractitionerFirstName>Vanilla </my:PractitionerFirstName>
       <my:PractitionerLastName>Ice</my:PractitionerLastName>
       <my:PractitionerNPI>1231231231</my:PractitionerNPI>
       <my:PractitionerDegree>MD</my:PractitionerDegree>
     </my:group2>
     <my:group2 xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2012-02-06T05:56:10">
       <my:PractitionerFirstName>Kim</my:PractitionerFirstName>
       <my:PractitionerLastName>John</my:PractitionerLastName>
       <my:PractitionerNPI>1234567890</my:PractitionerNPI>
       <my:PractitionerDegree>DO</my:PractitionerDegree>
     </my:group2>
  </my:group1>

however they are not being included. What it is currently doing is taking the LAST record in group2 and ignoring all the records preceeding this one:

<my:PractitionerFirstName>Kim</my:PractitionerFirstName>
<my:PractitionerLastName>John</my:PractitionerLastName>
<my:PractitionerNPI>1234567890</my:PractitionerNPI>
<my:PractitionerDegree>DO</my:PractitionerDegree>

question: what would cause XML parser to grab only the last record from group2 and omit everything else ?

source: http://stackoverflow.com/questions/10358793/xmlparser-skipping-to-the-last-tag-in-a-set-of-tags
Using xml: using-xml