SSM Health Medical Group
Michael Hemmersmeier, DO Family Medicine in O Fallon, MO
Dr. Hemmersmeier is board certified in family medicine. He completed his residency at Deaconess Hospital - St. Louis after earning his medical degree at Kirksville College of Osteopathic Medicine. Dr. Hemmersmeier has been in practice in O'Fallon, MO since 1998. He has a special interest in sports medicine and has volunteered as a coach in the community and at his church in conjunction with his children's athletic interests. Dr. Hemmersmeier has been awarded recognition from the National Committee for Quality Assurance (NCQA) Diabetes and Stroke Physician Recognition Programs for meeting national standards for diabetes and stroke care.
Dr. Hemmersmeier is part of a Patient-Centered Medical Home.
Dr. Hemmersmeier uses telehealth services to conduct video office visits with current, established patients for: upper respiratory infection, sore throat, cough, seasonal allergies, skin rashes or lesions, mouth and cold sores, flu symptoms, conjunctivitis, UTI, gout, yeast infection and travel medication.
_A forward-facing camera and internet access are required, and a tablet or computer/laptop may be used. Telehealth appointments can be scheduled online through MyChart._
Dr. Hemmersmeier is part of a Patient-Centered Medical Home.
Dr. Hemmersmeier uses telehealth services to conduct video office visits with current, established patients for: upper respiratory infection, sore throat, cough, seasonal allergies, skin rashes or lesions, mouth and cold sores, flu symptoms, conjunctivitis, UTI, gout, yeast infection and travel medication.
_A forward-facing camera and internet access are required, and a tablet or computer/laptop may be used. Telehealth appointments can be scheduled online through MyChart._
About Me
Specialties
Family Medicine
Gender
Male
Education
Forest Park Hospital (facility closed)
Internship, 1996
A.T. Still University (Kirksville College Osteopathic Med)
Medical School, 1995
Forest Park Hospital (facility closed)
Residency, 1998
Hospital Affiliations
SSM Health DePaul Hospital - St. Louis
SSM Health St. Clare Hospital - Fenton
SSM Health St. Joseph Hospital - Lake Saint Louis
SSM Health St. Joseph Hospital - St. Charles
SSM Health St. Mary's Hospital - St. Louis
Certifications
American Board of Family Medicine
Drug Enforcement Administration
Missouri Dept of Health/Narcotics&Dangerous Drugs
Missouri State Board of Registration
Medical Interests
Abdominal pain
Abnormal uterine bleeding
Acne
Acute and chronic hepatitis
Acute sinusitis
Addictive personality
Adolescent gynecology
Adrenal disorders
Age spots
Alcoholism alcohol treatment
Allergy treatment
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.9Overall Experience4.9Listened Carefully4.9Explained Things Clearly4.9Knew Medical History4.9Involved in Care Decisions4.9Showed Courtesy & Respect
Patient Reviews
SSM Health only displays patient satisfaction data for providers included in our survey process and who have a minimum of 30 returned surveys. The overall rating is an average of all responses to the survey questions listed below. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn more about our survey.
4.9 out of 5
560 ratings,
211 reviews
9/18/2026
Did not rush me and listened and answered my questions.
9/18/2026
I had heard good things about him, and I was looking for a new physician and He was Awesome. Very personable, excellent communication skills, very attentive to me as a patient, very knowledgeable I am so happy he was able to accept me as a patient. I have been bragging about his excellent care. Great experience at his office and he was on time
9/17/2026
Great dr.
9/17/2026
Very good Dr. and friendly.
9/16/2026
He knows his patients very well and communicates in a professional but easy to understand manner. I've recommended him to my family and friends.
Map & Directions
SSM Health Medical Group
1101 Highway KO Fallon, MO 63366
Mon
7:30 am - 5:00 pm
Tue
7:30 am - 5:00 pm
Wed
7:30 am - 5:00 pm
Thu
7:30 am - 5:00 pm
Fri
7:30 am - 5:00 pm
Sat
Closed
Sun
Closed
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