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How hard do hospitalists work and how much are they paid? There are several sources of data to answer this question, and each has its strengths and weaknesses. Because these data influence contract negotiations and compliance with federal regulations, it is worth taking the time to understand the differences in each data set.

I’ll focus on the two most common sources of data: the biannual SHM survey of hospitalist productivity and compensation (officially titled “The Authoritative Source on the State of Hospital Medicine”), and the Medical Group Management Association’s (MGMA) annual “Physician Compensation and Production Survey.” There are many other surveys that report hospitalist data such as those by the American Medical Group Association (AMGA), Sullivan & Cotter, Hay Group, and others. Each July, Modern Healthcare magazine publishes the average compensation (but no other data) reported for hospitalists and other specialties by each of these organizations and several others (but not the SHM data). It should be easy to find a copy of Modern Healthcare in your hospital administration or library, or on the Internet.

The SHM and MGMA surveys are the most widely used sources of data for hospitalists, and some of their attributes are described in Table 1 (see below).

I should acknowledge my potential conflict of interest and potential for bias in comparing these surveys. This column is in an SHM publication. I’m very active in SHM, and I’m a past chairman and ongoing member of the Benchmarks Committee, which oversees the design and analysis of the SHM survey. And while I am familiar with and regularly review the MGMA survey, I have no other connection to that organization.

Much of the difference between the surveys is a result of the SHM survey being designed specifically for hospitalists in any type of practice setting (e.g., small hospitalist-only groups, as well as hospitalists with huge organizations like a university faculty group practice). In contrast, the MGMA survey is designed for all physician specialties, so a hospitalist answers the same questions as a traditional primary care doctor, plastic surgeon, and obstetrician.

MGMA data can be adversely affected by the inclusion of primary care office-based encounters. One of the principal ways the two surveys differ is how they address ambulatory visits. The MGMA survey reports inpatient and ambulatory visits separately, but “ambulatory” visits include any for a patient who is not a hospital inpatient. By this definition, hospitalists make ambulatory visits, most commonly to hospitalized patients who are on observation status, and also patients seen in an ED, skilled nursing facility, or pre-op clinic. Thus the MGMA survey doesn’t distinguish between ambulatory encounters a hospitalist would generate in the course of serving as a hospitalist, and those generated while that doctor might be serving in a non-hospitalist role such as office-based primary care or urgent care.

The SHM survey doesn’t include—and isn’t contaminated by—office-based primary care or urgent-care visits.

Of the 3,376 total encounters reported in the MGMA survey, 40% (1,351) are ambulatory encounters. Although the SHM survey does not distinguish between hospital and ambulatory encounters, my experience suggests few, if any, hospitalist practices make 40% of their total encounters with patients on observation status, or in an ED, SNF, or pre-op clinic. Thus, many of the ambulatory encounters reported by MGMA might have been office visits, not hospital-related visits.

Additionally, the median internal medicine hospitalist encounters (ambulatory and hospital combined) in the MGMA survey (3,376) is 42% higher than the median total encounters reported for internal medicine hospitalists in SHM’s survey (2,378). Yet the wRVUs reported in the MGMA survey (3,514) are only 8% higher than those reported in the SHM survey (3,256). Thus the calculated average wRVUs per encounter for the MGMA data is only 1.04, compared with 1.37 for the SHM data. An average of 1.04 wRVUs per encounter is very low for hospitalists, when almost all current procedural terminology (CPT) codes a hospitalist uses have a value of one or more wRVUs. Again, this suggests the MGMA data may be significantly influenced by the inclusion of office-based encounters, some of which have wRVUs of less than one. SHM has approached MGMA to discuss this data definition issue in their survey.

Table 1. Comparison of SHM and MGMA Surveys click for large version

click for large version

Why It Matters

You can use whichever data set best describes your situation. The MGMA has historically shown higher hospitalist salaries and higher workloads than the SHM data. But because the SHM data is the result of a survey customized for hospitalists and less likely than the MGMA data to be contaminated by non-hospital-related visits, the SHM data probably gives a more accurate picture.

Because the MGMA survey has been conducted for many years (far longer than the SHM survey) it has appropriately become one of the most authoritative sources of data on physician compensation for all specialties. Stark II regulations require hospitals to ensure they aren’t paying physicians above the fair market compensation (which could be seen as an inducement to refer patients to the hospital, among other concerns). And it specifically states that the MGMA survey is one of several approved sources of determining what fair market compensation is.

Even though the SHM data is most likely more representative and provides an important benchmark for hospitalists, the MGMA data has “pre-approved” status and thus is potentially safer to use for the specific purpose of determinations of fair market value.

With each iteration, the SHM survey will be adjusted to more specifically capture hospitalist activity; in many cases it is the best data for hospitalists to use in planning and benchmarking. But the MGMA data are still valuable and may be the most appropriate to refer to in contracts.

Note to readers: In May, SHM contacted MGMA regarding their concerns that MGMA survey data was not representative of hospitalists. MGMA responded with a willingness to discuss these issues with SHM. As this story goes to press, SHM and MGMA continue to have a dialogue about maximizing the accuracy of survey data. TH

Dr. Nelson has been a practicing hospitalist since 1988 and is a co-founder and past-president of SHM. He is a principal in Nelson/Flores Associates, a national hospitalist practice management consulting firm. This column represents his views and is not intended to reflect an official position of SHM.

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