Summary

Dr. Gregory Derfus is a gastroenterologist and internal medicine physician who earned his medical degree from the Medical College of Wisconsin. With 42 years of clinical experience, he brings extensive knowledge to the diagnosis and treatment of digestive system disorders and comprehensive adult care. Dr. Derfus is fluent in both English and Spanish.

Dr. Derfus practices with Mayo Clinic Health System in Eau Claire, Wisconsin, where he provides specialized digestive care and internal medicine services. His affiliation with this renowned health system ensures patients receive coordinated, comprehensive treatment. Patients have given him an average rating of 4.7 out of 5, reflecting their confidence in his expertise and care approach.

Overview based on verified provider data

Quick Facts

  • 4.7
  • 42 years of experience
  • 7 insurance plans accepted
  • speaks English, Spanish
  • Medical College Of Wisconsin
  • 2 specialties
  • 6 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Gregory Alan Derfus has 4 locations

Mayo Clinic Health System Digestive Care

1221 Whipple St Fl 5Eau Claire, WI 54703
Mon8:00 am - 5:15 pm
Tue8:00 am - 5:15 pm
Wed8:00 am - 5:15 pm
Thu8:00 am - 5:15 pm
Fri8:00 am - 5:15 pm
SatClosed
SunClosed

Dr. Gregory Alan Derfus

1302 Whipple StEau Claire, WI 54703

Mayo Clinic Health System

1221 Whipple StEau Claire, WI 54703
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Mayo Clinic Health System Eau Claire Internal Medicine

1400 Bellinger StEau Claire, WI 54703
Mon8:00 am - 5:30 pm
Tue8:00 am - 5:30 pm
Wed8:00 am - 5:30 pm
Thu8:00 am - 5:30 pm
Fri8:00 am - 5:30 pm
SatClosed
SunClosed

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Dr. Gregory Alan Derfus, MDDr. Marina AnticMeegan Marie BassettDr. Jelena Stojsavljevic
GastroenterologyInternal MedicineNurse PractitionerInternal Medicine
4.7 
42 Years of Experience 11 Years of Experience 15 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish
Eau Claire , WIEau Claire , WIEAU CLAIRE , WIEau Claire , WI
Med School: Medical College Of Wisconsin Med School: University Of Belgrade Faculty Of Medicine Med School: University Of Belgrade Faculty Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Gregory Alan Derfus

  • AARP
  • Blue Cross Blue Shield of Michigan
  • Dean Health Plan
  • Humana
  • PreferredOne
  • UnitedHealthcare
  • UnitedHealthcare - Medicaid (Managed)

Medical Specialties

Dr. Gregory Alan Derfus has the following 2 specialties

Specialty Expertise

Dr. Gregory Alan Derfus has the following 6 areas of expertise

  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

42 Years Experience

Education & Training

Medical School

Graduated from Medical College Of Wisconsin in 1984.

NPI Number

Dr. Derfus' NPI number is 1861465304.

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Frequently Asked Questions

What languages does Dr. Gregory Derfus speak?
Dr. Gregory Derfus speaks English and Spanish.
Is Dr. Gregory Derfus accepting new patients?
Dr. Gregory Derfus has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Gregory Derfus accept my insurance?
You can see the insurance plans that Dr. Gregory Derfus accepts on their Vitals profile.
Which hospitals is Dr. Gregory Derfus affiliated with?
Dr. Gregory Derfus is affiliated with Mayo Clinic Health System.
Does Dr. Gregory Derfus accept virtual/telehealth appointments?
Dr. Gregory Derfus has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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