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How Many Staff Members Do You Need?

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While there’s no one staffing formula that fits every practice, industry benchmarks can point you in the right direction .

Crystal S. Reeves, CPC

Fam Pract Manag.  2002 Sep;9(8):45-49.

This content conforms to AAFP CME criteria. See FPM CME Quiz.


Many physician practices struggle long and hard with finding just the right number of members to work in just right jobs at just the right time. Few practices ever master the struggle and reach staffing “utopia.” Those that do attain favorable staffing levels and stability tend to experience it only briefly.

The mistake many practices make is adopting an oversimplified and reactionary approach: If the work falls behind or one is pleading for help, they add staff. if overhead expenses grow too high, they cut personnel costs.

This backward-looking approach seldom works, creating a pendulum effect that results in having either too many or too few staff members on board. Over-staffing brings an increase in costs, but not always a corresponding increase in efficiency or quality Under-staffing can lead to decreased patient satisfaction, reduced collections and poorer financial performance.

So what is the secret to successful staffing? Although the answer depends greatly on hiring people whose work ethic, experience and expertise make them well suited for the job, physicians can attain a general idea of their staffing requirements by comparing their practices to industry benchmarks and making adjustments to the numbers, as needed.


Practices can begin to assess their staffing levels by consulting industry benchmarks, which are widely available.

When comparing their staffing levels to benchmark data, practices may need to adjust their numbers based on unique circumstances.

High physician productivity may justify higher staffing levels than the benchmarks suggest.

How to do it

The first step in benchmarking is to find reliable sources of data for physician practices, such as the Medical Group Management Association (MGMA), Practice Support Resources (PSR), the American Medical Association (AMA) and the American Medical Group Association (AMGA), as well as local medical societies (see "Benchmarking resources" for contact information). When comparing your practice with industry performance standards, try to find data for practices similar to yours and consult at least two sources for a broader perspective.

The next step is to determine what to measure. When it comes to staffing, most practices want to know the answers to two questions: Do we have enough individuals to do the work? And are our staffing costs in line with those of other similar practices?

To answer these questions, look for benchmarks that address the following:

The number of support staff per full-time-equivalent (FTE) physician,

The percentage of gross revenue spent on support staff salaries.

The grid in "A quick comparison" shows two sets of staffing benchmarks – one from PSR and one from MGMA. The third column in the grid provides a place for practices to enter their own data for comparison. For practices to be able to compare “apples to apples,” it is important that they understand how these benchmarks were derived and follow the same methodology in calculating their own numbers. Different surveys may use different methodologies (you can usually find them described within the survey document), but they will generally resemble the following:

Support staff per FTE physician. The support-staff-per-FTE-physician ratio indicates the number of full-time staff members it takes to adequately support one full-time physician. (Midlevel providers are not included in this calculation but will be accounted for later under “Adjusting the numbers.”) The Medical Group Management Association (MGMA), one of the leaders in practice benchmarking, uses the following methodology to determine FTE physicians:

Determine how many physicians in your practice work “full time” (defined as the minimum number of hours considered to be a normal workweek in your practice).

For each physician who works less than full time, divide his or her average number of hours worked in a week by the full-time standard to determine FTE status. For example, if Dr. A works 30 hours a week

in a practice that considers 40 hours to be full time, his FTE status is .75 (30/40 = .75).

Based on steps 1 and 2, above, calculate your total number of FTE physicians. For example, if you have two full-time physicians and two physicians who each work 30 hours per week in a practice where 40 hours is a full work-week, your number of FTE physicians would be 3.5 (1+1+.75+.75=3.5).

Follow the same process for determining your FTE support staff. Then, divide the number of FTE support staff by the number of FTE physicians. This quotient is your staffing ratio. For example, 15 FTE support staff divided by 3.5 FTE physicians = 4.3 FTE support staff per FTE physician.

Staffing expenses as a percent of revenue. To determine staffing expenses as a percent of revenue, divide the amount paid in staff salaries by gross revenue for the same period. For MGMA benchmarks, this figure includes support staff salaries and benefits. Others, such as Practice Support Resources, Inc. (PSR), include salaries only. A practice should be able to obtain its staffing expenses from the year-to-date information available on its profit and loss statement.

Adjusting the numbers

Many practices cannot accept their numbers at face value. Extenuating circumstances within practices often have an effect on staff size requirements or account for staffing salaries that are higher or lower than benchmarks. For this reason, practices should consider the following points before deriving any conclusions regarding their staffing numbers.

Midlevel providers. Practices may need to adjust their target staffing levels based on whether they employ nurse practitioners or physician assistants. For example, the MGMA 2001 Cost Survey 1 provides benchmarks of 0.38 MLPs and 4.67 support staff per FTE physician in family practice. If your practice has no midlevel providers, your staffing needs may be lower. If your practice has a high number of MLPs per physician, you will likely need more staff than the benchmarks suggest in order to support the additional providers.

Physician productivity. Practices may also need more or less staff than the benchmarks suggest depending on the number of patients each physician sees in a day and the number of procedures and ancillary services the office provides. Therefore, when comparing FTE physicians, it is also advisable to compare gross charges per physician or the number of visits per week or per year.

For example, PSR’s 2001 Practice Management STATS Quick Reference 2 provides the following physician productivity benchmarks for family physicians:

Total annual gross charges: $417,000 to $550,000,

Ambulatory visits per week: 95 to 125,

Inpatient visits per week: 6 to 12.

(According to PSR, these ranges cover about half of the practices surveyed, with about 25 percent above and 25 percent below the ranges.) Using these figures, a practice may want to adjust the number of FTE physicians it uses in estimating appropriate staffing. Physicians whose productivity figures fall near or beyond the extremes of these ranges may cause a practice’s actual number of FTE physicians to be misleading. For example, consider a practice with three FTE physicians has total annual gross charges of $1,800,000. If you divide total charges by the range maximum, $550,000, the adjusted FTE physician number comes to 3.27. The higher physician productivity could warrant higher staffing levels.

Satellite locations. Satellite locations are a great way to increase a practice’s patient base, but sometimes they call for heavier staffing. If the satellite location functions as a full-time independent practice with its own support staff, then its staffing levels should be comparable to those of traditional practices. However, if a practice’s satellite location is used only part of the time, with physicians and office staff floating between the two facilities, the practice’s total staffing needs for the two locations may be slightly greater.

The grid shown here provides two sets of staffing benchmarks for family practice (one from Practice Support Resources’ 2001 Practice Management STATS Quick Reference and one from Medical Group Management Association’s 2001 Cost Survey ). Practices can list their own staffing numbers in the third column and compare and adjust their numbers as needed. PSR provides a range for surveyed practices, while MGMA provides the median. Other sources of benchmarking data are listed in "Benchmarking resources."

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