Our practice was established in 1954 by Richard Schafer, M.D.  William L. Horvath M.D., FACP, joined the practice in 1975, shortly after which we were incorporated as Haematology-Oncology Associates of Ohio & Michigan, P.C. George M. Pipoly M.D. joined the practice in 1978.  Dr. Schafer retired in 1986 and Kenneth R. Krupp, M.D. joined in 1987. Dr. Jeffery H. Muler joined in the spring of 2003.

We would like to take this opportunity to welcome you to HOA Cancer Center. Our oncologist provide our patients with superior, comprehensive care with a personal touch. Our Oncologist provide the most advanced medical therapy for our patients and to provide this care with the highest level of compassion and dignity.