Hire a dentist specific tax/accountant. They will file all the quarterlies, Corp and personal taxes, tax planning, etc. etc. I paid him a monthly retainer so I would not be nickel and dimed every time I called him. It's worth it. To this day .... he has been my acct since day 1 of practice. He helped when I was purchasing my 1st practice and entering a partnership. He helped when I was building my other practices. He helped when it was time to sell my ortho practices. An Acct's knowledge is invaluable. We met quarterly for tax planning and to review the practice numbers.
But you still need to know where your money goes. I suggest that you PAY YOUR OWN BILLS. Know where every dollar goes. I used office quickbooks. We also did inhouse payroll. It's easy. Again ... the acct can help with the tax tables and payroll deductions.
BTW. Office theft, embezzling will happen in your lifetime. It happened to me. Word to the wise. Do not have ONE person entering contracts and posting payments. It is way too easy for them to manipulate the books and steal money. Have one person enter the contracts. Another person posts the payments and makes the deposit. My acct than would review the monthly ledger to see if there were any suspicious "credit" payments to patients.