The main difference is age. Family medicine physicians care for patients of every age, from newborns through seniors. Internal medicine physicians, called internists, care for adults only, generally 18 and older. Both are primary care specialties. Both complete four years of medical school and three years of residency. Both handle physicals, vaccines, chronic disease, and everyday illness.

The split shows up in training. According to the American College of Physicians, internal medicine residents spend all three years on adult medicine, including rotations through the adult subspecialties. Family medicine residents divide their time across children, adults, older adults, and women’s health. Here is how the two compare.

Family Medicine vs Internal Medicine at a Glance

	Family medicine	Internal medicine
Ages treated	Newborn through senior	Adults, generally 18 and up
Residency length	3 years	3 years
Training focus	Pediatrics, adults, geriatrics, obstetrics, behavioral health	Adult medicine plus subspecialty rotations
Usual setting	Outpatient clinic	Outpatient clinic and hospital
Strongest fit	One practice for the whole household	Adults with several conditions at once

How the Training Differs in Practice

The American Academy of Family Physicians describes family medicine as care across the full life span, with heavy emphasis on continuity and prevention. Residents log a minimum number of encounters with both children and older adults.

Internal medicine goes deeper on adult disease. Internists rotate through cardiology, endocrinology, pulmonology, and other subspecialties, which builds detailed knowledge of conditions like diabetes and heart disease.

Which One Should You Choose?

For a healthy adult, the practical difference is small. Choose based on who else needs care and how complex your health is.

• Pick family medicine if you want your children and your parents seen at the same practice.
• Pick internal medicine if you are an adult managing multiple long term conditions.
• Either works for routine physicals, vaccines, and common illness.

Yorktown Health Vernon Hills offers both. Dr. Shawn George, DO is an internal medicine physician. Clarissa Schroeder, DNP, FNP-C is a board certified family nurse practitioner who sees all ages.

Final Thoughts

Family medicine covers every age. Internal medicine covers adults in depth. Both deliver the same core primary care.

Ask which provider fits your household, then book primary care in Vernon Hills.