1. Community Health Center: Public health professionals can open a community health center that focuses on preventive care and population health. This center could provide services such as immunizations, health screenings, and health education classes.

2. Health Insurance Brokerage: By utilizing their expertise in public health, professionals in this field can start a business that helps individuals and employers find the best health insurance option available.

3. Health Information Technology Consulting: With the growing importance of digital health technologies in managing population health, public health professionals can start their own health IT consulting business. They can help healthcare organizations create strategies to make the most of their health IT investments.

4. Disease Surveillance: Public health professionals can start their own business providing disease surveillance services to healthcare organizations. This business can focus on tracking the prevalence and spread of particular diseases, such as influenza or HIV, in the local population.

5. Mental Health Practice: With their training in public health, professionals in this field can open their own mental health practice. This practice can focus on providing mental health services to underserved communities.

6. Population Health Management Company: Public health professionals can open a population health management company to help healthcare organizations manage their population health initiatives. This business can focus on providing services such as data analysis, predictive analytics, and risk stratification.