Mark Grossklaus, MD

Family medicine
Patient Rating
5 / 5 (Based on 210 reviews)
Accepts new patients 17 years and younger only Insurance accepted

Mark Grossklaus

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

April 20, 2026
Dr. Grossklaus is always available and helpful. Receptionist greeted me by name when I arrived without having me use the kiosk - very nice.
April 15, 2026
The clinic and doctor are great!
April 1, 2026
I always feel so fortunate to have Dr. Grossklaus as my dr. He is so knowledgeable and compassionate.
April 1, 2026
Good team
March 30, 2026
I prefer to see Dr. Grossklaus because he knows my history and seems to care. The front desk person was very helpful getting my kids signed up as new patients.
March 30, 2026
Dr. G is a good listener. I am grateful his prompt action to get me in for a CAT scan, followed by an immediate referral to a surgeon led to a positive outcome.
March 18, 2026
Dr Grossklaus is a very caring, courteous and intelligent professional
March 18, 2026
Very satisfied with my experience
March 16, 2026
I've been with Dr Grossklaus for years, he has always made good recommendations on my health path and is very easy to talk too. I would highly recommend
February 23, 2026
My only issue is if you have us check-in online through My Chart why should we have to check in again on our arrival to lobby?
February 18, 2026
Dr. Grossklaus has provided exceptional care for more than 20 years. He consistently manages my health needs with expertise and attention, and he has always referred me to topquality specialists whenever care beyond primary medicine was necessary. He is a remarkable physician who genuinely prioritizes patient wellbeing and positive outcomes. I am truly grateful to have him as my primary care provider.
February 18, 2026
All was good
February 16, 2026
My family and I could not be more pleased. Dr. Grossklaus is outstanding !
February 9, 2026
I have been a patient of Dr. Grossklaus since I was child, he then became my family's physician ever since I had my first child at 16 years old. Today, he continues to care for all four of my children, and every visit reminds me why we've stayed with him for so long. His compassion, patience, and genuine dedication to his patients are unmatched.He listens without judgment, explains everything clearly, and always makes us feel seen and supported. His medical knowledge is exceptional, but what truly sets him apart is the way he cares - you can feel it in every interaction. Even with his new role as Vice President and the long hours he puts in, he never rushes us and always gives his full attention.Finding a doctor who treats you like family is rare, and we are incredibly grateful for the care he has provided throughout the years. He has been a constant source of trust, comfort, and guidance for my family, and we couldn't imagine having anyone else as our primary care physician.
February 4, 2026
Dr. Grossklaus has been instrumental in maintaining my health.
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