Dr. Karen Gremminger, MD

Dr. Karen Gremminger, MD

Oncology  ·  
Female  ·  
Age 51
Dr. Karen Gremminger, MD is an oncology specialist in Oshkosh, WI and has been practicing for 21 years. She graduated from Texas Tech University Health Sciences Center School Of Medicine in 1991 and specializes in oncology.

491 S Washburn St

Oshkosh, WI 54904

Contact Information

(920) 292-5555

Insurance Accepted

  • Aetna
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Cigna
  • Humana
  • MultiPlan

*Please verify this information when scheduling an appointment.

Learn about Dr. Gremminger

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Gremminger performs your care needs compared to other doctors.

Breast Diseases
very high
more than 92% of peers
very high
more than 90% of peers
Myelodysplastic Syndromes
more than 88% of peers

Dr. Gremminger's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

1  Specialties

  • Oncology

1  Board Certifications

  • Medical Oncology
    Accredited by: American Board of Internal Medicine*

81  Conditions Treated

Read Less

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for Wisconsin.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Texas Tech University Health Sciences Center School Of Medicine
    Medical School | Graduated 1991
  • Lds Hospital
    Internship Hospital | Completed 1992
  • Lds Hospital
    Residency Hospital | Completed 1994
  • University Of Utah
    Fellowship Hospital | Completed 1997

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Gremminger has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Gremminger does not have any memberships or affiliations listed. If you are Dr. Gremminger and would like to add memberships or affiliations, please update your profile.

Dr. Gremminger's Reviews

Likelihood of recommending Dr. Gremminger to family and friends
12 total reviews (2 have comments)

Likelihood to Recommend (12)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Gremminger's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (2)

I was so not impressed with her. I've been a cancer patient almost 9 years and regular oncologist moved on from Fox Valley he was an awesome oncologist. And I will not return to Dr. Gremminger I did not feel comfortable or cared or feel reassured in any way shape or form.
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I had breast cancer in 2014 and received treatment between oct 2014 through March 2015, with follow up appointments after my chemotherapy. Karen was always very knowledgeable, very understanding and caring. I liked her not only as my Doctor but as a person. I highly recommend her to anyone who...more
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