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Gregory Derfus, MD

Dr. Derfus is a gastroenterologist in the Eau Claire area. He is affiliated with Mayo Clinic Health System in Eau Claire and 3 more hospitals.
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Conditions treated

Tap to see related services for each condition and more details about our calculations.

Top 25%
31 doctors
Top 15%
32 doctors
Top 5%
15 doctors
Dr. Derfus saw more digestive tract conditions patients than 95% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
5 doctors
Top 15%
5 doctors
Top 5%
2 doctors
Dr. Derfus saw more benign polyps patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
3 doctors
Top 5%
1 doctor
Dr. Derfus saw more colon polyps patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
37 doctors
Top 15%
37 doctors
Top 5%
18 doctors
Dr. Derfus saw pain patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Derfus saw lactose intolerance patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Derfus saw kidney cyst patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.
Top 25%
8 doctors
Top 15%
8 doctors
Top 5%
3 doctors
Dr. Derfus saw more inflammatory bowel disease (IBD) patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
32 doctors
Top 15%
32 doctors
Top 5%
16 doctors
Dr. Derfus saw vascular disease patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
3 doctors
Top 5%
1 doctor
Dr. Derfus saw diverticulosis patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
20 doctors
Top 15%
20 doctors
Top 5%
10 doctors
Dr. Derfus saw more peripheral vascular disease (PVD) patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
3 doctors
Top 5%
1 doctor
Dr. Derfus saw more ulcerative colitis (UC) patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
2 doctors
Dr. Derfus saw more hemorrhoid patients than 75% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
12 doctors
Top 15%
12 doctors
Top 5%
5 doctors
Dr. Derfus saw more diarrhea patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
20 doctors
Top 15%
20 doctors
Top 5%
9 doctors
Dr. Derfus saw more acid reflux patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
2 doctors
Top 5%
1 doctor
Dr. Derfus saw more Crohn's disease patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
7 doctors
Top 15%
6 doctors
Top 5%
3 doctors
Dr. Derfus saw more gastroenteritis patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
14 doctors
Top 15%
14 doctors
Top 5%
6 doctors
Dr. Derfus saw more hemorrhage patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
34 doctors
Top 15%
33 doctors
Top 5%
16 doctors
Dr. Derfus saw cardiovascular disease (CVD) patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
20 doctors
Top 15%
20 doctors
Top 5%
9 doctors
Dr. Derfus saw more anemia patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
3 doctors
Top 5%
1 doctor
Dr. Derfus saw more irritable bowel syndrome (IBS) patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
3 doctors
Top 15%
3 doctors
Top 5%
1 doctor
Dr. Derfus saw more gastritis patients than 75% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
5 doctors
Top 15%
4 doctors
Top 5%
2 doctors
Dr. Derfus saw more bowel obstruction patients than 75% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
1 doctor
Dr. Derfus saw colon cancer patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
12 doctors
Top 15%
12 doctors
Top 5%
5 doctors
Dr. Derfus saw more liver condition patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
Dr. Derfus saw anal polyp patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
2 doctors
Top 15%
2 doctors
Top 5%
Dr. Derfus saw more gas patients than 75% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
8 doctors
Top 15%
8 doctors
Top 5%
3 doctors
Dr. Derfus saw biliary tract disease patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
4 doctors
Top 15%
4 doctors
Top 5%
2 doctors
Dr. Derfus saw gallstones patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Top 25%
10 doctors
Top 15%
10 doctors
Top 5%
5 doctors
Dr. Derfus saw more constipation patients than 85% of similar doctors in the Eau Claire area in 2014–2018. Learn more.

Related services provided

Top 25%
9 doctors
Top 15%
8 doctors
Top 5%
4 doctors
Dr. Derfus saw hernia patients in 2014–2018, but we couldn’t determine whether he was a top doctor for the condition in the Eau Claire area. Learn more.

Related services provided

Locations

Dr. Derfus sees patients and can be reached at the following locations.

HERS - Breast Center Midelfort Clinic
1400 Bellinger St
Eau Claire, WI 54703
955 miles away
Mayo Clinic Health System in Eau Claire
1221 Whipple St
Eau Claire, WI 54703
955 miles away

Reviews

Credentials
  • Medical College of Wisconsin
    MEDICAL EDUCATION, 1984

Specializations

    1. Allopathic & Osteopathic Physicians
    2. Internal Medicine
    3. Gastroenterology

Hospital affiliations

Dr. Derfus is able to admit and treat patients at the following hospitals.

  • Mayo Clinic Health System in Eau Claire
    B
    Hospital safety grade (Spring 2019)
  • Mayo Clinic Health System - Chippewa Valley
    Hospital safety grade not available
  • Mayo Clinic Health System Northland
    Hospital safety grade not available
  • Mayo Clinic Health System Red Cedar
    Hospital safety grade not available

Insurance accepted

Always check coverage with your doctor’s office.

  • Aetna
  • Anthem
  • Arise Health Plan
  • Assurant Health
  • AvMed
  • Avera
  • Banner Health
  • Baptist Health Plan
  • Blue Cross Blue Shield of Arizona
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Florida
  • Blue Cross and Blue Shield of Illinois
  • Blue Cross and Blue Shield of Louisiana
  • Blue Cross and Blue Shield of Minnesota
  • Blue Cross and Blue Shield of Montana
  • Blue Cross and Blue Shield of Nebraska
  • Blue Cross and Blue Shield of North Dakota
  • Blue Cross and Blue Shield of Oklahoma
  • Blue Cross and Blue Shield of Texas
  • Blue Shield of California
  • Capital District Physicians Health Plan
  • Cigna
  • CommunityCare
  • CoreSource
  • Coventry Health Care
  • Dean Health Plan
  • EmblemHealth
  • FrontPath Health Coalition
  • Geisinger Health Plan
  • Group Health Cooperative
  • Group Health Cooperative of Eau Claire
  • Group Health Cooperative of South Central Wisconsin
  • Harvard Pilgrim Health Care
  • Health Alliance
  • Health Alliance Plan of Michigan
  • Health Net
  • HealthCare Partners
  • HealthPartners
  • HealthPlus
  • HealthSCOPE Benefits
  • HealthSmart
  • Heritage Provider Network
  • Highmark Blue Cross Blue Shield
  • Hometown Health
  • Horizon Blue Cross Blue Shield of New Jersey
  • Humana
  • Independence Blue Cross AmeriHealth
  • Independent Health
  • Indiana University Health Plan
  • MVP Health Care
  • Magellan Health
  • MagnaCare
  • Mayo Clinic Health Solutions
  • MedCost
  • Medica
  • Medical Mutual of Ohio
  • Meritain Health
  • Midlands Choice
  • Moda Health
  • MultiPlan
  • Neighborhood Health Plan
  • Network Health Plan
  • Ohio PPO Connect
  • Optima Health
  • PacificSource
  • Paramount
  • Pomco
  • PreferredOne
  • Priority Health
  • Providence Health Plan
  • Regence Blue Cross Blue Shield
  • Rocky Mountain Health Plans
  • Security Health Plan
  • SynerMed
  • TRICARE
  • Trilogy Health Insurance
  • UPMC Health Plan
  • United Healthcare
  • Unity Health Insurance
  • WPS Health Insurance
  • WellMed Medical Management
  • Wellmark Blue Cross and Blue Shield