The U.S. healthcare field can be described as a large ecosystem where various professionals gather to provide patient care and health management.

According to the latest statistics, as of 2022, there are over 14.7 million healthcare workers in the U.S., accounting for about 9.3% of total employment.

First, looking at the occupations with the largest number of workers,

Registered Nurses (RNs) number about 3,360,000, making up the largest share of healthcare workers.

Personal Care Aides and Nursing Assistants follow with approximately 1,407,000 and 1,236,000, respectively.

Medical professionals also play a crucial role.

Physicians are active at around 933,000, performing various roles depending on their specialties.

Licensed Practical Nurses (LPN/LVN) number about 588,000, and Medical Assistants are around 541,000.

Additionally, many other professions such as pharmacists, pharmacy technicians, clinical laboratory technicians, physical therapists, and radiologic technologists collaborate to provide quality medical services to patients.

Thus, the U.S. healthcare industry is interconnected with various professions, requiring expertise and skills based on the roles assigned to each occupation.

With the aging population and the increase in chronic diseases, the demand for employment in this field is expected to rise further, making the education and enhancement of expertise in each profession a significant challenge.

Concentration of Large Hospitals in the U.S.

In the U.S., large hospitals tend to concentrate in states with a large population and well-developed urban infrastructure. States like California, Texas, New York, and Florida, which have large populations and active economies, are home to world-renowned medical institutions and university hospitals.

Moreover, states like Massachusetts, Illinois, and Pennsylvania also have many large hospitals equipped with medical research and advanced treatment systems, known as places where patients seek specialized medical services.

The distribution of large hospitals is determined by various factors such as the state's population, urban infrastructure, and level of medical investment, showing a pattern of concentration around major cities in the U.S.

I hope this helps in understanding the various occupations and workforce size in the U.S. healthcare field.