What are the opening hours?

Monday 8am - 4:30pm Tuesday 8am - 4:30pm Wednesday 8am - 4:30pm Thursday 8am - 4:30pm Friday 8am - 4:30pm Saturday 8am - 10:30am

Mercy Clinic Pediatrics O'Fallon, Wentzville and Winghaven

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O'Fallon, MO
Mercy Clinic Pediatrics O'Fallon, Wentzville and Winghaven

Currently open in O’Fallon, Wentzville and Winghaven

O’Fallon
300 Winding Woods suite 120

300 Winding Woods
O'Fallon, MO 63366

1502 West Meyer Road
Wentzville, MO 63385

07/03/2025

Happy 4th of July! We will be closed tomorrow, July 4th, and will reopen Saturday 7/5, for same day , sick visits. Mercy Kids Convenient care will also be closed tomorrow and will reopen for regular buisness hours Saturday 7/5.

Have a safe holiday! 🎇

06/30/2025

Starting 7/1, our phone hours will be changing:

Monday thru Friday: 7:30am to 4 pm
Saturday: 8:00 am to 10:30am.

06/10/2025

We would like to welcome Dr. Sean Fullan to Mercy Clinic Pediatrics. Dr. Fullan is accepting new patients at this time. For appointments, please call 636-978-7902. We are very excited to add him to our team!

06/09/2025

That time of the year again!

Appointments are open for scheduling your child’s sports physical if you have not done so. Please call our office at 636-978-7902 to schedule.

Don’t forget to fill out and bring your MSHSAA form to the visit.

05/26/2025

Happy Memorial Day!

Hope everyone enjoyed their weekend! Our office will be closed, Monday May 26th and will return to regular business hours Tuesday May 27th.

05/05/2025

St. Louis Measles update:

There is a confirmed case of measles from an out of state resident who visited the St Louis Aquarium between 1-6 pm on April 30th. They also ate at a local restaurant, but details have not been released.

For those who did NOT visit aquarium - no additional intervention necessary.

If you did visit the museum on 4/30 between 1-6 pm prophylactic treatmentt may be waternted if you or your child is:
—unvaccinated
—immunocompromised
—pregnant

If you child meeta this criteria, please call our office asap as the window for post exposure prophylaxis ends tomorrow 5/6.

The incubation period for measles after an exposure is 10-12 days which would fall on 5/10-5/12 for this exposure .

03/30/2025

Happy Doctors’ Day to the best crew around! Our practice and patients are so lucky to have such knowledgeable and compassionate physicians caring for them! We appreciate all you do!

03/06/2025

There is currently a measles outbreak centered in West Texas and New Mexico. Below is information about Measles and how to protect your children. If you have any questions please reach out to our office.

02/18/2025

Due to inclement weather and road conditions our office will open today at 10 am.

You will be receiving a text or call from our office if you had an appointment before 10 am to reschedule.

Be safe everyone! ❄️

01/07/2025

Our phones for all 3 locations will turn on at 10 am today 1/7.

01/06/2025

All 3 of our locations will be closed tomorrow, Monday 1/6 due to the weather.

Please stay safe and warm!

12/31/2024

Wishing everyone a safe and happy New Year!!

Holiday hours:
12/31- 8-10:30am (Highway K office)
1/1- closed
1/2- Regular hours: 8-4:30 pm for all 3 locations

After hours exchange (314)364-5277

Address

O'Fallon, MO

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm
Saturday	8am - 10:30am

Telephone

+16366986200

Website

http://www.mercy.net/stlouismo/practice/mercy-clinic-st-charles-county-pediatrics-st-charles

Alerts

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