They might want to see where they can make changes in staff or setting up their schedules to bring in more money to the practice. Management of paperwork for audits is important as well. Getting that extra help to keep things straight in regards to insurance is beyond important.
Some practices have staff that they like, but they might have one or two people who call out or do not work at their full potential and it can be easier having an outside company come in and make recommendations on changes or to let them go. This can create morale problems, so make sure that you have a people problem, or cut the scope of what the consultant will cover. Killing your synergy will make everyone unhappy.
There are many companies out there now in this field. You might want to choose someone who has actually worked in the dental field and has that personal knowledge versus someone that just has a degree in practice management. It is easier to respect and take the word of someone who knows what is actually involved in the practice.
Consultants will generally make a first office visit and meet alone with the owner/doctor. Some will charge an initial fee to go over a few basic numbers and information. Some will offer a free first visit. You can do a search to find this information out. They will also spell out what the intended scope of the work they will do. You may only want accounting help, or insurance help.
You can choose whether to get a one time analysis done of your office and make those changes or some doctors choose to pay a monthly fee and have a practice consultant at their disposal at all times. If you are shaky on business practices, this can be a great option. Perhaps the best bet is to focus on specific improvements, rather than a complete approach to the entire practice. Making wholesale changes to everything usually has poor results.
The fees can be very expensive so many doctors will make the determination on whether this is a service that would benefit them full time. Use of a consultant part time is the most chosen option. Grabbing benefits on the short term, and taking time to implement longer term changes helps.