SSM Health Medical Group
Leonard Hoffmann, MD Family Medicine in O Fallon, MO
Dr. Hoffmann is board certified in family medicine. He completed his internship and residency at Deaconess Health System in St. Louis. His medical degree was earned at Loyola University of Chicago. Dr. Hoffmann has been in practice since 1999; he has been with SSM Health in O'Fallon, MO since 2002. Dr. Hoffmann's special medical interests include sports medicine, preventive medicine, hypertension, and diabetes. Dr. Hoffmann has been awarded recognition from the National Committee for Quality Assurance (NCQA) Diabetes Physician Recognition Program for meeting national standards for diabetes care.
Dr. Hoffman 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. Hoffman 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
Loyola University School of Medicine
Medical School, 1996
Forest Park Hospital (facility closed)
Internship, 1997
Forest Park Hospital (facility closed)
Residency, 1999
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 State Board of Registration
Medical Interests
Asthma
Diabetes management
Hypertension
Immunology immunotherapy
Preventive care
Primary care
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.8Overall Experience4.9Listened Carefully4.9Explained Things Clearly4.8Knew Medical History4.8Involved 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.
4.8 out of 5
401 ratings,
123 reviews
8/23/2026
Very good physician who I have been seeing for 10+ years. Always in the loop regarding my care that I receive from specialist.
8/20/2026
He seems to be a knowledgeable doctor!
8/20/2026
He's the BEST!
8/19/2026
very pleasant and knowledgable visit
8/14/2026
Highly recommend! He is always very thoughtful and thorough and I need that!
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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