Alexa Williams
1101 Highway K, 
O Fallon, MO 

Overview

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.

Her clinical expertise encompasses Premenstrual Syndrome, Polycystic Ovary Syndrome, Painful Menstrual Periods, Vaginal Bleeding Between Periods, and Hormone Replacement Therapy (HRT).

Dr. Williams is board certified in American Board Of Obstetrics & Gynecology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.

Graduate Institution

University Of Arizona

Residency

Mercy Hospital St. Louis

Specialties

Obstetrics and Gynecology

Licenses

Obstetrics & Gynecology in MO

Board Certifications

American Board Of Obstetrics & Gynecology
Drug Enforcement Administration
Missouri Dept Of Health/Narcotics&Dangerous Drugs
Missouri State Board Of Registration

Hospital Affiliations

SSM Health St. Joseph Hospital - Lake Saint Louis

Languages Spoken

English

Gender

Female

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Celtic
  • HMO
  • INSURANCE PLAN
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Essence Healthcare
  • INSURANCE PLAN
  • MEDICARE MAPD
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Home State Health
  • EPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Medica
  • EPO
  • HMO
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Sentara Healthcare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE ASSISTANCE PROGRAM
  • MEDICARE MAPD
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 14 Less Insurance Carriers -

Locations

SSM Health Medical Group
1101 Highway K, O Fallon, MO 63366
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Frequently Asked Questions about Dr. Alexa Williams

How do I make an appointment with Dr. Alexa Williams?

You can book an appointment with Dr. Alexa Williams by calling their office at 636-379-6363. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Alexa Williams a top-rated expert for Premenstrual Syndrome?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Alexa Williams is classified as an Experienced expert for Premenstrual Syndrome, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Alexa Williams specialize in?

While Dr. Alexa Williams is a Obstetrics and Gynecology, they have specific expertise in Premenstrual Syndrome, Polycystic Ovary Syndrome, and Painful Menstrual Periods. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Obstetrics and Gynecology.

Does Dr. Alexa Williams accept my insurance?

Dr. Alexa Williams accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 636-379-6363 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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