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$dbResSect = CIBlockSection::GetList(
Array("SORT"=>"ASC"),
Array("IBLOCK_ID"=>$arParams['IBLOCK_ID'],'DEPTH_LEVEL'  => 2)
);

 //deb($arResult["SECTION"]["PATH"][0]["ID"]);
  /* $arSections = GCBaseHelper::getIBlockSections([
      "SORT" => [
         "SORT" => "ASC"
      ],
      "FILTER" => [
         "IBLOCK_ID" => GCBaseHelper::getIBlockIdByCode("doctors"),
         "ACTIVE" => "Y",
         "DEPTH_LEVEL" => 2,
         "SECTION_ID" => $arResult["SECTION"]["PATH"][0]["ID"],
      ],
      "SELECT" => [
         "ID",
         "NAME",
      ]
   ]);*/
$dbResSect = CIBlockSection::GetList(
Array("SORT"=>"ASC"),
Array("IBLOCK_ID"=>$arParams['IBLOCK_ID'])
);
//Получаем разделы и собираем в массив
while($sectRes = $dbResSect->GetNext())
{
$arSections[$sectRes['ID']] = $sectRes;
}

var_dump($arResult["SECTION"]["PATH"]);