Our Practice
Our founding partners:
Drs. Karchmer, Dibb, Ahmann
and Kohler

Our Practice

Hematology Oncology Associates, PC was established in 2000 by Drs. Richard Karchmer, Charles Dibb, Gerald Ahmann, and Susan Kohler (all now retired). Since that time, we have grown to 22 providers in two locations, providing medical oncology and hematology services to a service area of approximately 400,000 residents.

One of the most important decisions we make is who joins our practice. Hematology Oncology Associates frequently needs qualified professionals for a variety of medical and office positions. We are proud of our standard of practice, our very high employee and provider retention rate, and our commitment to outstanding patient care.