  Preliminary lattice QCD results for $D\pi$ scattering in isospin
$I=\frac{1}{2}$ channel are presented. Utilizing the $N_f=2+1$ Wilson-Clover
configuration at two volumes ($L^3 \times T=32^3 \times 96$ and $48^3 \times
96$) with the same lattice spacing ($a=0.07746(18)$ fm) and pion mass ($m_\pi
\approx 303$ MeV), various two-particle operators in both the COM and the
moving frames are constructed and the corresponding finite-volume spectra are
determined from their correlation functions. The $S$ and $P$-wave scattering
phase shifts are then extracted using the L\"uscher approach, assuming
negligible contributions from higher partial waves. A virtual state associated
with the $D_0^*$ is also identified.
