\documentclass[12pt]{article}

\pagenumbering{gobble}

\usepackage{pdfpages}

\usepackage{tikz}

\def\parsecomma#1,#2\endparsecomma{\def\page@x{#1}\def\page@y{#2}}

\tikzdeclarecoordinatesystem{page}{

\parsecomma#1\endparsecomma

\pgfpointanchor{current page}{north east}

% Save the upper right corner

\pgf@xc=\pgf@x%

\pgf@yc=\pgf@y%

% save the lower left corner

\pgfpointanchor{current page}{south west}

\pgf@xb=\pgf@x%

\pgf@yb=\pgf@y%

% Transform to the correct placement

\pgfmathparse{(\pgf@xc-\pgf@xb)/2.*\page@x+(\pgf@xc+\pgf@xb)/2.}

\expandafter\pgf@x\expandafter=\pgfmathresult pt

\pgfmathparse{(\pgf@yc-\pgf@yb)/2.*\page@y+(\pgf@yc+\pgf@yb)/2.}

\expandafter\pgf@y\expandafter=\pgfmathresult pt

}

\begin{document}

\includepdf[pages=4,pagecommand={\begin{tikzpicture}[remember picture, overlay]\node at (page cs:0.65,0.90) {Daniel S. Lambrecht};\end{tikzpicture}}]{./eric_john_berquist_etd.pdf}

\includepdf[pages=5]{./eric_john_berquist_etd.pdf}

\end{document}