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

522 verified ratings

2 Locations


SSM Health Medical Group

1101 Highway K

O’Fallon, MO 63366

(636) 379-6363 Directions


522 Ratings, 186 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.
Apr 2, 2026
Dr. Mike is a great guy and really helps make you feel at ease. He asked about my family and lifestyle and asked if there was anything else that I needed to talk to him about before I left. He also had me go to the lab and have bloodwork done. I had my results in MYCHART less than 12 hours after my appointment and my appointment was in the afternoon. I couldn’t have asked for anything more.

Apr 2, 2026
He is the best!!!

Apr 1, 2026
He’s been my PCP for more than 20 years and I’m thankful to have him as my initial point of contact into the HC system.

Apr 1, 2026
Great physician and have recommended him to multiple friends.

Mar 28, 2026
My family and I have been with Dr Mike for at least 25 years. It's nice to have a doctor who cares as much for our health and well being as he does. Thank you Dr Mike.

Mar 27, 2026
Best doctor anyone can have!

Mar 25, 2026
He is very friendly and listens well.

Mar 24, 2026
Dr. Mike has been my primary physician for over 20 years. I like that he pays attention and remembers everything. I trust Mike.

Mar 24, 2026
He listened to and answered all my concerns.

Mar 24, 2026
Great doctor!

Mar 24, 2026
I love Dr. Mike!! He's very thorough and treats you like family.

Mar 22, 2026
I enjoy going to Doctor Mike

Mar 22, 2026
Excellent MD

Mar 20, 2026
He is awesome!!

Mar 19, 2026
He’s the Best!!!

Mar 17, 2026
He is always very nice and professional . I’ve been seeing him a very long time . .

Mar 17, 2026
Thank you for providing such great service

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!