Before 1910, there wasn't a single dominant way to treat illness in America. Dozens of schools trained practitioners in different approaches - homeopathy, eclectic medicine, naturopathy, alongside what we now call conventional medicine. Nearly half of all doctors practiced some form of alternative method. The public chose between healing systems.
By 1930, that diversity had collapsed. Of 166 medical schools operating in 1904, only 76 survived. And they all followed the same curriculum.
This transformation wasn't driven by scientific debate. It was driven by money.
John D. Rockefeller's General Education Board, established in 1902 and funded with over $180 million, became the primary vehicle for medical education reform. Between 1913 and 1929, the GEB distributed $94 million to 25 medical schools.
The funding came with conditions:
Schools that met these conditions received funding. Schools that didn't, closed. The market decided - but the market was shaped by who controlled the capital.
The most revealing detail: Rockefeller personally supported medical pluralism.
He stated: "I desire that homeopathists should have fair, courteous, and liberal treatment extended to them from all medical institutes to which we contribute."
In 1919, allocating $45 million to the General Education Board, he instructed his staff: "Homeopathic teaching should not be excluded; it should be provided for, the same as Allopathic."
Yet homeopathic schools closed at far higher rates than conventional ones. The instruction wasn't followed.
Frederick Gates, Rockefeller's key advisor who actually directed the philanthropy, held different views. Gates personally selected personnel for Rockefeller foundations who shared his opposition to alternative approaches. Private reports Gates wrote for Rockefeller harshly criticized homeopathy while praising the Johns Hopkins model.
The disconnect between Rockefeller's stated beliefs and actual foundation policy shows how institutional control can operate independently of the person whose name is on the building.
The justification was efficiency and quality. Gates developed what he called "scientific giving" - philanthropy directed at root causes rather than symptoms.
Rockefeller believed: "To help an inefficient, ill-located, unnecessary school is a waste... it is highly probable that enough money has been squandered on unwise educational projects to have built up a national system of higher education adequate to our needs, if the money had been properly directed to that end."
This framing positioned standardization as quality improvement rather than elimination of competition. Schools that closed weren't suppressed - they were simply "inefficient."
The funding wasn't distributed evenly.
For every dollar the GEB donated to Black medical schools between 1902 and 1919, it donated $123 to White schools. Per capita, the ratio was even more stark: for every dollar donated to White medical schools per White resident, Black schools received about $0.07 per African American resident.
The efficiency framework didn't account for whose efficiency was being optimized.
Before: Multiple approaches competed in a relatively open market. Patients and communities chose practitioners based on results, cost, accessibility, and trust.
After: One model dominated, backed by institutional infrastructure, hospital partnerships, and standardized credentialing. Alternative practitioners faced jail time for practicing what had been legal and common decades earlier.
The change wasn't primarily achieved through scientific demonstration that one approach worked better than others. It was achieved through conditional funding that required specific educational models, mandatory institutional structures, and ongoing oversight - applied selectively.
This history doesn't prove that conventional medicine is wrong or that alternatives are right. Many schools that closed were genuinely inadequate. Standardization brought real improvements in some areas - surgical training, infectious disease treatment, diagnostic consistency.
But it does show that the current dominance of one medical model over others was achieved through economic leverage rather than open competition of ideas. Approaches that might have developed differently - or contributed useful observations - were eliminated before they could be evaluated on their merits.
The system we inherited isn't the result of all approaches being tested and the best one winning. It's the result of one approach having access to capital that allowed it to define the terms of competition.
Understanding this history doesn't tell you what to think about any particular treatment. But it does explain why "medicine" means one specific thing rather than a broader category - and why that narrowing happened when and how it did.