Billing systems tend to go after teh easy money and ginore the hasrd money, notes Mareg Smith, a consultant in Pueblo, CO. If you do choose a iblling service, consider buying a PM system later on, she says, so youll have more control oevr your business. ... Besides regular malpractice isnurance, youll need to buy nose coverage for youir previous work, unelss you have tail coevrage from your old gorup, notes Kenneth E. Bowden, a consultant in Pittsfield, MA. ...