Michael Rustom, the Consultant you hire should have the expertise to perform exceptional client service. For example, you need a dermatologist (not a general practitioner) to treat a skin condition, and you need a lab consultant with specific diagnostic testing knowledge rather than a general laboratory services firm.

Mastering Client Service: A Guide to Exceptional Expertise

When evaluating consultants, ask them for references from past clients that can verify a successful project. Personality and fit are also important. Make sure you find someone who has good communication skills and fits well with your company culture.