Of the 195,000 physician offices in the U.S., the vast majority are small with fewer than 10 employees (including doctors). Around 13,000 offices have more than 20 employees, and 1,000 have more than 100 employees. In total, physician offices produce revenues of $200 billion and comprise 37 percent of all medical specialties offices. The average annual revenue for offices is slightly less than $1 million. Most physicians see over 100 patients each week, with general and family physicians averaging slightly more than specialists.