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Internal Medicine

Internal Medicine doctors provide preventive and primary care services for adults.

They specialize in diagnosing and treating a variety of disease and conditions.

An Internist, as they are sometimes called, is often the leader of your health care team.

They perform regular physicals and recommend preventive care steps.

Your Internal Medicine doctor can diagnose and treat many health conditions and refer you to a specialist if needed.

Internal Medicine physicians are trained to diagnose and treat many medical problems. These include: 

  • Heart disease
  • Diabetes
  • Cancer
  • Depression
  • High blood pressure
  • Stroke 
  • Arthritis 

See more on some of the conditions Internal Medicine doctors treat below.

Some Internal Medicine doctors have additional training in areas such as geriatrics, hospital care, metabolic care, pediatrics and women’s health.

A Hospitalist is an Internal Medicine doctor who sees patients in the hospital or other care facilities. 

They perform examinations, procedures, and order tests and treatments. They provide progress reports to your primary care doctor or other specialist. Hospitalists are not considered primary care physicians.

Preventive Care

Preventive care focuses on preventing illnesses, injuries or medical conditions before they happen. One of the most important priorities for you primary care provider is keeping you healthy.

Your doctor can help you identify good lifestyle choices and schedule the appropriate health screening and vaccinations.

A regular physical examination is an important part of your preventive care. How often your doctor recommends you come in for an exam depends on your age and health.

Primary Care

Primary care focuses on preventive care and caring for your medical needs, such as managing chronic conditions.

At Marshfield Clinic, you can choose from these primary care departments:

  • Family Medicine – providers who care for the entire family. Patients of all ages receive total health care from a Family Medicine physician and associated team. Family Medicine emphasizes preventive care and provides acute and chronic care.

  • Internal Medicine – providers who care for adults. Internal Medicine physicians are specially trained to diagnose and treat medical problems such as heart disease, diabetes, cancer, depression, high blood pressure, stroke, arthritis and other conditions. They also provide physical and gynecological exams.

  • Med-Peds​​ – providers who care for adults as well as children and adolescents. Med-Peds physicians have the training and dedication of pediatricians and internists combined. They care for patients throughout life, managing acute and chronic illnesses at all ages. Multiple generations of a family may receive care.​

  • Pediatrics – providers who care for children and teens. Pediatricians specialize in keeping children well, from birth to young adulthood. If a child needs specialized care, Marshfield Clinic Children's has the most comprehensive children's health services network in the region.

Vaccines & Immunizations:

​​​​​​​​​​​​​​​​​​Your protection from preventable diseases doesn't end as you mature.​ Learn more about recommended vaccines for adults & seniors.​


​​​Conditi​ons & Treatments

  • Allergies

    Alzheimer Disease




    Celiac Disease

    Chronic Kidney Disease




    Coronary Heart Disease


  • Diabetes






    High Cholesterol




    Kidney Stones


    Lyme Disease

  • Meningitis

    Mood Disorders

    Multiple Sclerosis



    Personality Disorders


    Prostate Cancer


    Skin Cancer


    Ulcerative Colitis

Internal Medicine Contact Right Rail

 Man on a bicycle The diabetes epidemic: How you can fight back

“Type 2 Diabetes is absolutely an epidemic,” said Dr. Kent Ray, a Marshfield Clinic endocrinologist. “There are so many medical problems that come along with diabetes, and it’s expensive to treat.” Read more

More internal medicine stories:

Miraculous timing: Stroke doesn’t stop this patient

Depression: Not just sadness

 Primary Care

Family Medicine Doctors
treat the whole family.

Internal Medicine Doctors
treat adults.

Med-Peds Doctors
treat adults and children.

treat children.