About EVANSVILLE OBGYN (THOMAS S. HASTETTER MD LLC) Evansville Obgyn (thomas S. Hastetter Md Llc) is a women's health care provider established in Evansville, Indiana specializing in obstetrics & gynecology. The NPI number of Evansville Obgyn (thomas S. Hastetter Md Llc) is 1114059839 and was assigned on March 2007. The practitioner's primary taxonomy code is 207V00000X..