With over 155 million ED visits annually in the U.S., most of us will end up in an emergency department at some point — as a patient or alongside one. But how much do we really know about the doctors treating us? A veteran emergency physician with 25 years of experience pulls back the curtain on the factors that quietly shape ER care.

From physician demographics to shift dynamics, the variables are more significant than most patients realize. Female emergency physicians order slightly more tests and admit more patients (3–5% more), though mortality rates are comparable. Older physicians show a small but statistically significant uptick in patient mortality. And while longer shifts can cause decision fatigue, shorter shifts bring more handoffs — a surprisingly risky moment for communication errors.

By the Numbers:

• 155M+ ED visits annually in the U.S. — and rising
• ~50,000 clinically active emergency physicians in the U.S.; median age 50, ~70% male
• Female physicians admit 3–5% more patients, with no difference in mortality
• Physicians over 60 show ~0.1% higher patient mortality vs. those under 40
• In 2023, nearly half of EM residency training programs went unfilled

Why it matters: Emergency care is rarely a controlled environment, and physician decision-making is shaped by far more than training alone. Understanding these dynamics — and actively engaging with your ER doctor through questions and shared decision-making — can meaningfully improve your care experience and outcomes.