Michael Hemmersmeier, DO

Family Medicine

1101 Highway K

O'Fallon, MO 63366 Directions

636-379-6363

www.getcare.ssmhealth.com

4.9 out of 5

516 verified ratings

2 Locations


SSM Health Medical Group

1101 Highway K

O’Fallon, MO 63366

(636) 379-6363 Directions


516 Ratings, 181 Comments


The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Mar 12, 2026
An awesome doctor!

Mar 12, 2026
excellent care

Mar 11, 2026
I've been a patient of Dr. Hemmersmeier since he joined SSM, (about 27 yrs). He really cares about you as a person and patient. I drive over hour for my appointments with him.

Mar 11, 2026
Always polite & listens to my concerns

Mar 11, 2026
He knows my history and I trust him applicably!

Mar 10, 2026
I was very happy overall I spent several months looking for a new doctor since mine had left the area and Dr. Hemmersmeier was recommended by a friend and I really like him. I’m glad I found a new doctor.

Mar 10, 2026
Dr. Mike, is a doctor that I trust! He is always very friendly and welcoming. He takes whatever time is necessary to deal with the reason for my visit. He listens to my problem as well as including me in any diagnosis and treatment he makes. I know that when I see him for a visit, my health is his top concern and he will do whatever it takes to resolve my health issue. Simply put, he is an outstanding doctor!

Mar 10, 2026
Thorough and informative of my lab updated my medication In-N-Out in a timely manner

Mar 6, 2026
He’s very interested in all aspects of my health and is willing to discuss & explain everything

Mar 5, 2026
He’s obviously an excellent doctor and extremely likable as a person.

Mar 5, 2026
Dr Hemmersmeier always makes me comfortable and at ease when talking with him about my health issues.

Mar 4, 2026
One of the best care givers I have ever known.

Mar 4, 2026
Caring, professional, and knowledgeable

Mar 3, 2026
It has always been good.

Feb 27, 2026
Good Doctor

Feb 25, 2026
We love Dr Mike

Feb 25, 2026
He does a good job of putting you at ease. I did not feel rushed. I felt listened to.

Feb 24, 2026
He is the best no doubt hands down

Feb 24, 2026
I do not plan to return to this physician.

Feb 24, 2026
I'm just very satisfied with his demeaner and care.

Feb 23, 2026
Cares about client.

Feb 19, 2026
Quality care.

Feb 18, 2026
El Doctor y su equipo están haciendo un gran trabajo. (English translation: The doctor and his team are doing a great job.)

Feb 17, 2026
I've been seeing Dr. Mike for many years but managing my chronic pain, he seems lacking.

Feb 12, 2026
Love the guy! very personable and knowledgable.

Feb 11, 2026
Wonderful

Feb 10, 2026
I have recommended DR Hemmersmeier to several people. He's an excellent DR

Feb 10, 2026
He was very prompt with my appointment time. He is also very thorough and patient.

Feb 3, 2026
Dr Mike has been our family’s primary physician for over 25 years. Can’t imagine going to a different doctor. He is very caring and dedicated

Feb 3, 2026
Always a great, personal experience.

Feb 2, 2026
Great Dr..takes his time and thorough

Jan 28, 2026
Felt a little rushed and I didn’t get all of my questions answered and I had something else I wanted to discuss with him, but didn’t feel like time allowed

Jan 27, 2026
Dr. Mike is the best!

Jan 26, 2026
Dr. Mike is an old family friend and even if he wasn't, I do not think it would change his treatment of me.

Jan 24, 2026
He's the best of the best!!!!

Jan 22, 2026
I know doctors have many patience they see every day, but I feel like he spent all the time with me. I needed discussing my treatment and conditions, so I felt very informed about my health.

Jan 21, 2026
Dr. Mike seems genuinely interested in my overall health and well being. Though I only see him twice a year, he knows me for the individual I am.

Jan 21, 2026
THE BEST!!!

Jan 16, 2026
He is a great doctor.

Jan 15, 2026
He’s always up beat and listens carefully to all concerns. Offers help to help with my concerns either by a prescription,therapy or whatever.

Jan 14, 2026
Dr. Mike and his nurses are awesome

Jan 13, 2026
He takes the time listen and explain answers as needed.

Jan 13, 2026
Very knowledgeable, giving actionable and specific advice to my situation!

Jan 13, 2026
He is concise and listens to and addresses my concerns.

Jan 13, 2026
Always takes time to listen to my complaints, gives a recommendation, and I am out of the office. Great physician.

Jan 9, 2026
Very welcoming and the app is easy to communicate with. When I’m in the doctors office I don’t feel rushed and the doctor listens to my concerns.

Jan 8, 2026
We always appreciate how dedicated he is and how well he has taken care of our family the past 30plus years! What a blessing he has been!

Jan 7, 2026
Very knowledgeable and caring

Jan 4, 2026
Dr Hemmersmeier took such good care of my parents I trust him thoroughly

Dec 18, 2025
Good dr