Home/Providers/Family Medicine/Michael Hemmersmeier

SSM Health Medical Group

Michael Hemmersmeier, DO

Family Medicine

4.9 out of 5 –

SSM Health Medical Group

1101 Highway K O Fallon, MO 63366

636-379-6363

View location details

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._

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
4.9
Overall Experience
4.9
Listened Carefully
4.9
Explained Things Clearly
4.9
Knew Medical History
4.9
Involved in Care Decisions
4.9
Showed 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

523 ratings,

189 reviews

6/5/2026

It was a very good experience.

6/4/2026

I like how he cares for his patients.

6/4/2026

I have already “talked up“ Dr. Hemmersmeier to friends and family and I’m very glad that I was able to establish with him as my PCP.

6/2/2026

Dr Mike is great and he listens then recommends the treatment plans.

5/29/2026