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About Me

Experience

Education

University of North Dakota School of Medicine, Grand Forks, Medical School

Residency

University of Wisconsin Hospital & Clinics, Madison, Internal Medicine

Fellowship

University of Wisconsin Hospital & Clinics, Madison, Rheumatology

Certifications

American Board of Internal Medicine; American Board of Rheumatology; Certified Clinical Densitometrist by the ISCO

Reviews

We value patient feedback and are committed to providing you with information, so you can make informed decisions about your health care, physicians and other providers in your care journey. Patient ratings and comments are gathered from the post-visit experience survey. Learn more.

January 30, 2026
Always a great experience very caring
January 28, 2026
Thank you! Very helpful and professional.
January 25, 2026
Dr Mumm knows me now. I have had rheumatoid since I was 18. He listens to me, as I know my body well. He gives me good suggestions and let's me join in the decision making.
January 24, 2026
Dr Mumm and staff are informative and knowledgeable with the information they provide.
January 21, 2026
100% satisfied with my visit
January 17, 2026
Dr Mumm is very caring and professional I would recommend him to anyone who has the same concerns as I do
January 08, 2026
Dr Mumm ia always professional and takes the time to explain things. I appreciated our conversation about Insurance.
January 04, 2026
Reception staff were very friendly and welcoming.
December 12, 2025
He gave me pros, cons & alternatives to my Rx considerations - Dr Mumm was extremely well informed
December 05, 2025
Dr Mumm did not rush the appointment, and for that, I am grateful. He was very informative & listened to my concerns.
December 04, 2025
Dr. Mumm & nurse are exceptional care team! Efficient, personable, knowledgeable. Thank you!!
November 30, 2025
I consistently get excellent care at Avera Rheumatology.
November 26, 2025
Very pleased with the visit
November 26, 2025
The complete experience was very good, from the short wait time, the precheck from nurse to the Docter visit they were all very concerned and helpful with my condition.
November 16, 2025
All Excellent
November 16, 2025
Dr. Mumm is exceptional in the care he has given to me. I would highly recommend him to anyone with RA.
November 15, 2025
Very Professional
November 15, 2025
Waited 20 minutes to be taken back and then 40 additional minute to see the doctor with no apology or explanation
November 14, 2025
Always caring & competent responses, treatment, advice & follow ups to care. Dr Mumm & nurse do a great job!
November 10, 2025
Great medical attention! The doctor and nurses are always super!
November 10, 2025
Great staff, nurses, and physicians
November 07, 2025
Entire facility is welcoming from the moment you walk into the doors, from the people that you check in with, and subsequently, those with Dr, Mumm's (including Dr Mumm himself) staff are efficient, patient and kind.
November 05, 2025
Everything was good.
November 05, 2025
Appt was an hour late. All apologized.
November 05, 2025
Dr. Mumm has been a very good provider for me. I always feel validated as a patient.
November 05, 2025
Dr. Mumm and nurse are so amazing!
November 02, 2025
I will recommend the clinic to my friends
October 30, 2025
I felt he was dismissive
October 27, 2025
Dr Mumm is very knowledgeable, kind considerit always helpful
October 18, 2025
Dr Mumm has always Included me In the decision making of my treatment and explains clearly what is going on and what to expect.
October 12, 2025
Dr. Mumm took his time and throghly checked and explained treatment that could be done took X-rays also
October 10, 2025
Wait time seems a little long.Service is good.
October 08, 2025
I really appreciated Dr Mumm care and compassion. Same with his nurse
October 03, 2025
He explained my surgery better than my surgeon did, very happy with today's visit. My mom and I come from Watertown together for his appointments and very accommodating to get same day and following each other. Thanks Avera
October 03, 2025
Well pleased with Avera and staff.
October 02, 2025
Always concerned & caring of any issues
September 27, 2025
A great experience!
September 26, 2025
Very good experience
September 21, 2025
Dr and nurse were excellent!
September 17, 2025
It's all Good
September 14, 2025
Dr. Mumm is a highly skilled provider who continues to impress me. I have been struggling with shoulder pain for the last few months and was not sure if it was my RA, osteoarthritis or my rotator cuff. Dr. Mumm assessed my situation and said he thought it was my rotator cuff. We discussed my options and I asked if a steroid injection would help and it did, before I even got home. We did some X-rays to confirm and he was right, again. I'm also going to PT to assure the home exercise routine I have is best for me.
September 14, 2025
I have been with Dr. Mumm for awhile now and have always felt that he listens to me, asks questions, and seeks to help and find solutions.
September 10, 2025
Very good people and good turn around
September 08, 2025
I have an infusion every 4 weeks and all staff I deal with know me. So it is always the same. Kind of like visiting friends or family.
August 31, 2025
Dr . Mumm is an excellent physician and demonstrates knowledge and care for his patients
August 30, 2025
Great service
August 30, 2025
Dr. Mumm is wonderful. Always thoroughly prepared & focused on listening to my concerns and doing what he can to ease my condition.
August 29, 2025
I appreciated Dr. Mumm's attention to my joint pain. He was very thorough.
August 18, 2025
Good experience
August 17, 2025
All good as usual!
August 14, 2025
Doctor Mumm is an excellent Doctor Who listens well and provides great advice on matters relevant to my issues.
July 31, 2025
Dr Mumm is very thorough, patient and intelligent. Explains things well.
July 25, 2025
I would recommend Dr Mumm to family and friends
July 20, 2025
Absolutely great, he answered all my questions, patiently , and explain so clearly
July 20, 2025
We have recommended Dr Mumm to several of our friends and family.
July 17, 2025
I always feel Dr. Mumm listens to all my concerns and questions and never makes me feel rushed through
July 13, 2025
I always feel Dr Mumm is interested in my problems and try's to explain my issues and pain. He's been very helpful to me.
July 07, 2025
Love them all.
July 05, 2025
Dr Mumm is very knowledgeable
June 30, 2025
I have seen Dr. Mumm for many years. I like him, and trust him. He has guided me through years of living with and treating osteoporsis. He Is thoughtful, and conservative in his recommendations. A good doc.
June 27, 2025
The doctor was very concerned with my progress from a previous vist and suggested different solutions for my problem....
June 17, 2025
Always listens to questions and concerns and always tries to find solutions!
June 15, 2025
Good
June 06, 2025
Dr Mumm always takes time to answer my questions and provides me with information about my symptoms.
June 04, 2025
Excellent physician
May 23, 2025
Quality care all the way around!
May 23, 2025
I feel so fortunate to have Dr. Mumm as my provider. He is, in my opinion, genuinely vested in the best care for my health.
May 20, 2025
Always excellent care & explanations. Response to any flare ups excellent!
May 13, 2025
Dr. Mumm was very considerate of my feelings and needs. He was also very careful examining my joints, which I greatly appreciated because of the pain I was in.
May 10, 2025
Dr mumm listened carefully to my concerns, and he spent time talking with me about each concern.I feel so lucky to have such an experienced doctor. Thank you
May 10, 2025
Dr. Mumm is effective, attentive thoughtful, and thorough. I am so grateful to be his patient!
May 02, 2025
Dr Mumm is fantastic! My quality of life is way better with him as a doctor.
April 23, 2025
This physician is top notch and I am thankful he is one of my physicians!
April 23, 2025
Dr. Mumm is an excellent Doctor! I appreciate him much!
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Directory Disclaimers

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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