Mental Health Therapist

Sierra Koester, LPC

1001 Boardwalk Springs Pl, O Fallon, Missouri, 63368-4778

About Sierra Koester

Sierra Koester is a therapist based in O Fallon, Missouri who is specialized in Mental Health Counselor. Active license number of Sierra Koester is 2022020366 for Mental Health Counselor in Missouri. Her current practice location is 1001 Boardwalk Springs Pl, O Fallon. Patients can reach her at 636-655-0960. Sierra Koester is LPC in Mental Health Counselor and her NPI number (Unique professional ID assigned by NPPES) is 1669213633.

Sierra Koester is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. She assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.

Practice Information

Sierra Koester speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Sierra Koester
Specialization Mental Health Counselor
Credentials LPC
Gender Female
Practice Address: 1001 Boardwalk Springs Pl,
O Fallon, MO - 63368-4778

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1669213633
NPI Enumeration Date: 04 Jun, 2024
NPI Last Update On: 04 Jun, 2024

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Sierra Koester are as mentioned below.

License NumberSpecializationStateStatus
2022020366Mental Health Counselor MissouriPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Sierra Koester
1001 Boardwalk Springs Pl,
O Fallon, MO - 63368-4778

Book an Appointment with Sierra Koester

To schedule an appointment, contact Sierra Koester at 1001 Boardwalk Springs Pl, O Fallon, Missouri or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Sierra Koester:

Sierra Koester is a therapist specializing in Mental Health Counselor. She is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. She assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.

Yes, Sierra Koester is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Sierra Koester practices at 1001 Boardwalk Springs Pl, O Fallon, Missouri, 63368-4778.

To schedule an appointment with Sierra Koester, please contact the office at 636-655-0960.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.