Internal medicine doctors or internists specialize in the prevention, diagnosis and treatment of conditions and diseases in adults over 18. Internal medicine physicians provide general medical care and help patients manage chronic and complex conditions, such as hypertension and diabetes, and can refer you to a specialist when needed. As a primary care doctor, internal medicine doctors can help you (if you are over the age of 18) be well by providing services such as: 

Preventive screenings 
Routine check-ups 
Health risk assessments 
Immunizations 
Management of chronic conditions, such as diabetes, asthma, and high cholesterol 
Regular Women’s Health screenings, such as breast exams and Pap smears 
Referrals to and coordination of care with specialists