Internal Medicine

Internal medicine doctors (Internists) are focused on preventing and treating adult diseases and specialize in patients that are 18 years old or older.

Appointments: Northfield Clinic: (507) 646-1494


Complete Care for Adults – Internal Medicine

Internal medicine doctors (Internists) help with whatever problem a patient has  - no matter how common or rare,  how simple or complex. We are specially trained to solve puzzling health problems, and can treat severe chronic illnesses as well as situations where several different illnesses may strike at the same time. We also bring an understanding of wellness and disease prevention to your care. 

Conditions We Treat

Chronic diseases such as:

  • Abnormal heart rhythms (like atrial fibrillation)
  • Anticoagulation management
  • Arthritis
  • Asthma
  • COPD/Emphysema
  • Dementia/Cognitive Impairment
  • Diabetes
  • Heart disease
  • Heart failure
  • Hypertension (high blood pressure)

Acute illness such as:

  • Abdominal pain
  • Allergies
  • Bowel issues
  • Cellulitis
  • Cold and flu symptoms
  • Diverticulitis
  • Headaches
  • Infectious problems
  • Joint pain
  • Nausea/Vomiting
  • Pneumonia
  • Rashes
  • Sinus and ear infections
  • Stomach problems
  • Urinary tract and bladder infections

Our Team of Doctors and Providers

Katie Helgen
Helgen, Katherine
Internal Medicine
Dr. Randolph Reister
Reister, Randolph
Internal Medicine

Service Locations


Northfield Clinic

2000 North Avenue
Northfield, Minnesota 55057
Closed Now
Sun: Closed
Mon - Tue: 7:30 am-8:00 pm
Wed - Fri: 7:30 am-5:00 pm
Sat: Closed