Mark Grossklaus, MD

Family medicine
Patient Rating
5 / 5 (Based on 204 reviews)
Read reviews | About reviews

Schedule an Appointment

262-542-9100
Current patient online scheduling
Accepts new patients 17 years and younger only Insurance accepted

Mark Grossklaus

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About me

Philosophy of care

“I enjoy caring for individuals of all ages, which provides the opportunity to treat entire families. I like the challenge of pursuing a diagnosis and identifying a course of treatment to help my patients feel better.”

Gender

Male

Hobbies and Personal Interests

Dr. Grossklaus is married with three children and a dog. He enjoys spending time outdoors, biking and fishing. Dr. Grossklaus regularly competes in biathlons and annually in the American Birkebeiner’s signature ski race in Hayward, Wisconsin. He is also a professional driving education instructor at Road America.

My location

Education

Medical School

University of Wisconsin School of Medicine and Public Health, Madison, WI

Residency

Mayo Clinic-Franciscan Healthcare, St. Francis Medical Center, La Crosse, WI

Certifications

Board Certifications

Family Medicine

Reviews

September 15, 2025
I choose to continue care with Dr. G since he knows me well and is respectful. I know it takes longer to get in and I will not get sick visits with him but I am ok with that. This visit was later than I am used to and clinic staff was mostly already gone for the day.
September 15, 2025
Dr. Mark has ALWAYS been the example every physician should aspire to be. He's caring, knowledgeable and just a downright good person.
September 15, 2025
Dr. Grossklaus was very thorough and helpful. I would see him again and I would recommend him to friends and family.
September 3, 2025
Always great visit to office. Been with this doctor 20+ years. Problem is he got promoted and he deserves to be. But now limited office hours now. I drive 130 miles to see THIS provider.
August 29, 2025
My care and planning for future medical needs are exceptional.
August 25, 2025
Dr. Grossklaus is a wonderful doctor. He is very caring and takes time to listen to you. He never seems rushed. I feel like I can talk to him about anything.
August 25, 2025
Dr. Grossklaus is a wonderful physician, always informative and caring.
August 20, 2025
I don't understand the point of annual physicals. If you say that ANYTHING is out of the ordinary you get charged/coded an additional fee for advanced service. So I just don't anything. The only benefit is current bloodwork.
August 11, 2025
Still waiting for follow-up appointment with referral.
August 8, 2025
Everyone on the team including Dr. G were great.
August 8, 2025
Good experience : Doctor is very very caregiving and cares about patients.Bad experience : Three times appoint dates were changed and disrupted our travel plans
August 6, 2025
Awesome visit and great Dr to listen to and communicate with.
August 4, 2025
Have been going to Dr. Grossklaus since we moved to Wisconsin 27 yrs. ago. Trust him completely. He has always taken his time with us all.
August 1, 2025
Dr. Grossklaus is the ultimate professional, simply the best!!
July 30, 2025
My experience was excellent.
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