SSM Health Medical Group
Alexa Williams, MD Obstetrics and Gynecology in O Fallon, MO

Dr. Alexa Williams is a board-certified obstetrician and gynecologist who provides compassionate, comprehensive care for women at every stage of life. She offers full-spectrum OB/Gyn services, including both low- and high-risk obstetrics, routine gynecologic care, and preventive health services. Her practice also includes natural family planning, with specialized training in the Creighton Model and NaProTechnology, offering women evidence-based options to understand and work with their fertility.
Passionate about patient education and partnership, Dr. Williams values listening to each woman's unique needs and tailoring care that respects each person's goals and overall health. Her aim is to create a safe, welcoming space where patients feel supported, respected, and cared for-whether it's during routine visits or some of life's most important moments.
Outside of medicine, Dr. Williams is a devoted wife and mother of six. She enjoys cooking and baking healthy meals, decorating and renovating her home, reading, and deepening her Catholic faith-which guides both her personal life and her approach to patient care.
She is a proud member of the Catholic Medical Association, and the American Board of Obstetrics and Gynecology.
Passionate about patient education and partnership, Dr. Williams values listening to each woman's unique needs and tailoring care that respects each person's goals and overall health. Her aim is to create a safe, welcoming space where patients feel supported, respected, and cared for-whether it's during routine visits or some of life's most important moments.
Outside of medicine, Dr. Williams is a devoted wife and mother of six. She enjoys cooking and baking healthy meals, decorating and renovating her home, reading, and deepening her Catholic faith-which guides both her personal life and her approach to patient care.
She is a proud member of the Catholic Medical Association, and the American Board of Obstetrics and Gynecology.
About Me
Specialties
Obstetrics and Gynecology
Gender
Female
Education
University of Arizona
Medical School, 2017
Mercy Hospital St. Louis
Residency, 2021
Hospital Affiliations
SSM Health DePaul Hospital - St. Louis
SSM Health St. Joseph Hospital - Lake Saint Louis
Certifications
American Board of Obstetrics & Gynecology
Drug Enforcement Administration
Missouri Dept of Health/Narcotics&Dangerous Drugs
Missouri State Board of Registration
Medical Interests
Cooperative medicine and restorative surgery NaProTechnology
Low risk pregnancy
Obstetrical care
Well woman exam
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 Clearly4.8Knew 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
98 ratings,
41 reviews
10/17/2026
We connected well regarding natural approaches to wellness.
10/16/2026
Talks quite quickly but great doc.
10/7/2026
Her support of my religious beliefs was very helpful on my care
10/6/2026
She was very courteous and thoughtful for my care.
9/24/2026
I will always recommend anyone in my life to go see Alexa williams. She is the best OB I have had. She is always so kind, warm and an active listener. She is incredibly knowledgeable and is always ready to help with any concerns I may have.
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
Similar providers at this location

SSM Health Medical Group
Thomas Ganz, MD Obstetrics and Gynecology in O Fallon, MO
4.7 out of 5 – 100 ratings
Schedule an Appointment Thomas Ganz, MD

4.9 out of 5 – 98 ratings
Schedule an Appointment Kimberly Ranck-Weiss, APRN-CNP

4.9 out of 5 – 54 ratings
