Clinical engineers as consultants play an important role in the health care industry. All practicing clinical engineers serve in some capacity as consultants because they have unique training, knowledge, and expertise that are of value to those in ancillary health care fields. Many of the tasks routinely performed by a clinical engineer in a hospital in support of administration, physicians, nurses, and clinics are actually consulting tasks. This chapter, however, is devoted to consulting in the sense of rendering engineering services to clients for a fee. The topic is presented here with an overview of the present clinical engineering consulting field and answers the dual question of “Who is doing what for whom, and how?” Credentials and qualifications are briefly presented, followed by practical business considerations for both the full-time and part-time independent consultant.