There is an important factor to consider that often negates any "rules" when it comes to formulas that are utilized to purchase a practice.
That factor is called managed care and more specifically, capitation. If your geographic area includes a significant amount of insurance companies that pay via capitated contracts, the formula for purchasing practices is very complicated. I will explain....
However, for those who don't understand "capitation" I will first explain this nasty word. The way this works, a PCP or the primary care group has to choose ONE DPM (or a particular podiatric group) to send ALL their patients who need podiatric care. Any patient in their practice who has insurance X must see you or your group if they are seeking podiatric care, once the PCP selects you as his/her designated provider. You then get paid a fee per patient, per month for every one of that PCP's patients who have that insurance.
So if that PCP has 1000 patients with that insurance, each month you will receive a check for those 1000 patients. Before you get too excited, the per patient per month fee can vary from about 38 cents per patient to about $1.50 per patient per month, depending upon the patients co-pay that they have during each visit.
That means that regardless if you EVER see these patients, you will receive a check. On the other hand, if you see Mrs. Jones 100 times you receive no additonal money, other than any co-pay she may have. Additionally, most of these capitated plans also INCLUDE surgery in the capitation, therefore you receive no additonal money for performing surgery. And that's why some docs are performing significantly less surgery!!
Statistically, in order for you to really make a profit with these contracts, you must have a utilization rate of no more than about 8%. That means that you really will start losing money if more than 8-10% of the 1000 patients see you regularly.
The positive part of accepting capitation is that you have a guaranteed check at the end of the month and a patient base, and these patients do also have a copay. Many of them do opt for non covered services such as orthoses, ESWT, etc., and these patients are also potential referral sources for other patients such as friends, relatives, etc., who may have other insurance carriers. Additonally, it "sets" the referral pattern from the PCP. If they send you the capitated patients, the chances are VERY strong they will also send you ALL other patients. If you don't accept the capitated patients, they will probably send all the other patients to the other doctor who accepts the capitated patients.
There is ONE big negative. You can lose these contracts in the blink of an eye, which is a large patient population and often a big chunk of change.
And that brings me to my original point. If you are purchasing a practice with a fairly large number of managed care patients under capitated contracts.....buyer beware.
When you purchase ANY practice, there is a normal expected attrition rate of patients who won't give you a try, don't like you, or decide to leave for a myriad of reasons.
But when you purchase a practice with a lot of capitated patients/contracts, you can literally lose hundreds or thousands of patients in ONE DAY with the swoop of a pen, if those doctors suddenly decide to switch the contract to another DPM. And this happens quite often.
These doctors may have been loyal to the doctor who previously owned your practice, but now their brother-in-law is opening a new podiatric practice so they will switch to him. Maybe they just built a new medical complex and some young hot looking podiatrist just rented space in their new building, so they decided to switch their contract to her, etc., etc.
Over the years, our office has lost HUGE contracts for the most unbelievably goofy reasons and we have picked up contracts from other DPM's for even more silly reasons. If the PCP is having a bad hair day, they may decide to swith podiatrists.
So, although every time a doctor takes over a new practice, there is a normal attrition rate, losing managed care capitated contracts can literally destroy a practice overnight and cost you huge bucks and hundreds or thousands of patients instantly.
Therefore, you MUST consider this when looking at a practice, and understand that a practice that derives a majority of it's income from managed care may NOT be as valuable as you think, since it's very volatile. If you do purchase a practice like this, you must have some agreement that it is contingent on you maintaining those contracts for X amount of time.
This is one factor everyone forgets to mention, and can be a nightmare to young docs. Some of these managed care insurance companies have "closed panels" and you may not even be able to provide services for these patients, even though the prior doctor did for years. So do your homework before making any decisions.