Many clinicians find that the promise of more work from managed care contracts is not worth the poor reimbursement, administrative problems and ethical concerns.
Ending your relationship with one or more companies is not impossible. It is a business decision that deserves study, thought and planning.
You can do it gradually while you build the skills needed to reconfigure your practice and develop a part-time niche or specialty practice. You can do it with sensitivity to the clinical needs of your current patients as well.
For more information listen to the TPI podcast, "Transitioning Out of Managed Care." You can download it here.