1.  American Oncology buys or agrees to manage practices that provide chemotherapy and drug treatments, along with groups that specialize in radiation therapies.

2.  Aetna has tried to improve relations with doctors, settling a lawsuit brought by the attorney general of Texas that challenged managed care practices.

3.  But hospitals unfamiliar with running entrepreneurial operations need to better manage the practices once they are acquired, she said.

4.  Other health-care companies in the Jacksonville area rose, including Orthodontic Centers of America Inc., a firm that manages orthodontic practices.

5.  The Caremark units in the merged company will manage physician practices, provide managed care for pharmaceutical users, measure the effectiveness of medical treatments and operate overseas.

6.  Wall Street loves American Oncology Resources, a Houston company that manages the practices of cancer doctors across the country.

7.  West Palm Beach, Florida-based Phymatrix invests in doctor groups and helps them manage their practices.