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Q: % of all visits to doctors/outpatient by size of physician practice? ( Answered,   0 Comments )
Subject: % of all visits to doctors/outpatient by size of physician practice?
Category: Health
Asked by: msgirl38111-ga
List Price: $20.00
Posted: 27 Nov 2006 12:13 PST
Expires: 27 Dec 2006 12:13 PST
Question ID: 785991
The size of MD practices is generally categorized as Solo, Partner,
3-5 docs, 6-10 docs, 11+ docs, etc. (or some scale like that)(with
varying %'s of EMR adoption)

There are approximately 1 billion doctor visits per year. What #/% of
those visits are in the various sizes of practices?

I'm trying to estimate the approximate # of doctor visits where there
may be an electronic medical record (EMR/EHR)
Subject: Re: % of all visits to doctors/outpatient by size of physician practice?
Answered By: bobbie7-ga on 27 Nov 2006 13:05 PST
Hello again msgirl38111,

Data from CDC?s National Ambulatory Medical Care Survey in 2003
indicate that almost three-quarters of visits to physicians occur in
practice sizes with four or fewer physicians. Data from the AMA survey
of group practices show similar results.

Table 1. Distribution of Physician Visits in the United States by 
Practice Characteristics. 

Characteristic     Percent of Visits
              Practice Size
Solo                      38.5
2-4                       34.6
5-9                       16.5
10 or more                 ~10
              Practice Type
Solo                      38.5
Single specialty          44.0
Multispecialty            17.5
National Ambulatory Medical Care Survey, 2003

?Casalino, Devers, and colleagues found that fewer than 10 percent of
physicians practice in groups with more than 20 physicians. According
to the Centers for Disease Control and Prevention (CDC), 67 percent of
all office visits in 2001 were to practices of four or fewer
physicians, and data from the American Medical Association (AMA)
across the continuum of medical specialties suggest that only one in
four or five physicians belongs to a group larger than eight


June 2006
Landon and Normand
From the Department of Health Care Policy, Harvard Medical School
(B.E.L, S-L.T.N); the Division of General Medicine, Beth Israel
Deaconess Medical Center (B.E.L); and the Department of Biostatistics,
Harvard School of Public Health (S-L.T.N) ? all in Boston,

Download full text here:

Search terms:
Billion OR million percent 
visits to physician offices
Practice size 

I hope the information provided is helpful!

Best regards,

Clarification of Answer by bobbie7-ga on 27 Nov 2006 13:14 PST
Please download the following publication.

See Table 2 for a more detailed breadkdown. (page 5)

Clarification of Answer by bobbie7-ga on 27 Nov 2006 13:20 PST
I found the most up to date data available here in the following CDC publication

Advance Data No. 374  June 23, 2006

Download here:

See page 12 Table 2 for detailed data


?Number and percent distribution of office visits with corresponding
standard errors, by selected physician practice characteristics:
United States, 2004

Overall, 86.9 percent of the visits were to physicians who owned the
practice themselves or owned it with a group of other physicians. The
majority of office visits (64.9 percent) were made to physicians
engaged in group practice (Table 2).

More than one-half of all visits were to physicians in practices with
2 to 9 physicians (52.8 percent) compared with 12.0 percent of visits
to large practices with 10 or more physicians.

One-third of visits were to solo practitioners, 41.2 percent were to
single-specialty group practices, and 23.7 percent were to
multispecialty group practices (Table 2).?

Request for Answer Clarification by msgirl38111-ga on 27 Nov 2006 16:15 PST
Bobbie, Thanks. Just back at my desk. Your clarifications refer to
documents to be downloaded but there are no links. (???) Wonder what's
up with that? MSgirl

Clarification of Answer by bobbie7-ga on 27 Nov 2006 16:22 PST
Download here:

See page 12 Table 2 for detailed data

Clarification of Answer by bobbie7-ga on 27 Nov 2006 16:35 PST
Hello again msgirl38111,

I copied the relevant data below

Practice size     Visits (thousands)    Percent 
Solo              320,042               35.1
2?4               286,980               31.5
5?9               194,200               21.3
10?39              92,870               10.2
40 or more         16,765                1.8
Page 12 , Table 2 

Advance Data No. 374,  June 23, 2006

I hope this helps!
There are no comments at this time.

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