This post falls into the category of “that's interesting.”  For all but the medical students reading, there isn't a lot of actionable information here.  But it is difficult to find this information out there.  Physician income information is relatively easy to find, but work hours information is notoriously difficulty to find.  The only information that combined physician work hours with their income is from a survey in JAMA published in 2003, and obviously using even older data.  Here's the “money shot”:

There's a lot of information there, but I'm just going to use the 4th column, the average hours worked.  I'm also going to adjust the column for the trends we're seeing in medicine of decreasing hours.  Over the last 15 years or so, physicians have been cutting back on their work hours.  Part of this is decreasing compensation and increasing practice burdens, part is a greater focus on lifestyle issues, and part is due to increasing numbers of women in our ranks who are more likely to work part-time and/or take off significant time due to pregnancy/child-rearing issues.  At any rate, it works out to about a 2 hour per week decrease since 2003.

Now, let's find some reasonable salary data out there.  Medscape has a survey using 2009 data.  [Update:  That link was no longer any good.  Here's the 2013 version of the survey.] I've used that data and combined it with the hours in the table above adjusted for the decreased work hours I've noted.  I've also made the possibly erroneous assumption that all physicians work 48 weeks a year.  Also, where I don't have the data, I've tried to fill it in from other, less reliable sources.  Those figures have an asterisk next to them in the table.  Here's what we end up with:

Specialty Income Work Hours per Week Work Hours per Year (X 48) Income Per Hour
Anesthesiology $389,000 59 2832 $137
Cardiology $472,000 55* 2640 $179
Dermatology $308,000* 44 2112 $146
Emergency Medicine $255,000 44 2112 $121
Family Practice $191,000 51 2448 $78
Gastroenterology $472,000 55* 2640 $179
General Surgery $326,000 58 2784 $117
Hospitalist $217,000 44* 2112 $103
Internal Medicine $226,000 55 2640 $86
Neurology $257,000 54 2592 $99
OB/GYN $297,000 59 2832 $105
Ophthalmology $314,000* 45 2160 $145
Orthopedic Surgery $503,000 56 2688 $187
Otolaryngology $389,000 52 2496 $156
Pathology $248,000* 44 2112 $117
Pediatrics $193,000 52 2496 $77
Psychiatry $207,000 46 2208 $94
Pulmonology $310,000 55* 2640 $117
Radiology $478,000 56 2688 $178
Urology $423,000 59 2832 $149


Now, I'm sure there are plenty of inaccuracies in this table.  For example, in my specialty (emergency medicine) there is a great survey I participate in every year, the Daniel Stearns Survey.  It showed the average emergency physician in 2010 made $278,000 in 1700 hours, for an hourly rate of $155, significantly more than this analysis shows.  But nonetheless, there are some useful trends to analyze.  For example, among specialties with three year residencies, hourly income ranges from $78 (FP) to $121 (EM).  Specialties requiring four years of training show a range from $94 (Psych) to $146 (Derm).  Five year specialties range from $117 (Gen Surg) to $187 (Ortho).  The only six year specialties I've included pay $179, although I know others tend to be relatively poorly paid such as many internal medicine-based and pediatric-based subspecialists.  I've always found it interesting that emergency doctors do a two year fellowship to specialize in pediatric emergency medicine only to make less money than they made before specializing.  Many other subspecialists, especially academicians, are in the same boat.

You can also see that if you want to get into the $100 an hour club primary care is pretty much out.  Procedures are where the big bucks are, not only as a general rule among specialties, but also within a specialty.  I find it embarrassing how much higher my reimbursement per time spent is from reducing a phalangeal dislocation or suturing a facial laceration compared to dragging a history out of an 85 year old demented patient and her family and reviewing her records.  If only I could get an entire clinic full of patients with nursemaid's elbows then maybe I could break into “The 1%”.

Lastly, if you go to the trouble to calculate out your hourly wage (and especially if you do it on an after-tax basis), you can see what services you're currently paying for that might be worth doing yourself.  For example, if you're an FP, making $78 an hour, let's say $52 after tax, and you're paying someone $40 to mow your lawn, but can do it yourself in a half hour, then you might want to consider doing it yourself and making twice as much as you make at work.  On the other hand, if you're an orthopedist, and have cut back on your hours to allow time to build on an addition to the house, you might want to consider hiring it out.  As I've mentioned before, managing your own finances and investments is still one of the highest-paying activities you can do, on an hourly basis.