Therapist

Lynn Sewester Underwood, MA, LCPC

791 Wall St, O Fallon, Illinois, 62269-2087

About Lynn Sewester Underwood

Lynn Sewester Underwood is a therapist based in O Fallon, Illinois who is specialized in Counselor. Active license number of Lynn Sewester Underwood is 180.011860 for Professional Counselor in Illinois. Her current practice location is 791 Wall St, O Fallon. Patients can reach her at 618-514-1154. Lynn Sewester Underwood, MA, LCPC, specializes in Counselor and her NPI number (Unique professional ID assigned by NPPES) is 1700353679.

Lynn Sewester Underwood is a trained and licensed mental health professional who helps individuals, couples, or groups manage and overcome emotional, psychological, behavioral, or relationship challenges. She works with people dealing with anxiety, depression, mood disorders, trauma, post-traumatic stress disorder (PTSD), grief and loss etc. She support her clients by understanding their thoughts, emotions, and behaviors.

Practice Information

Lynn Sewester Underwood specialty, credentials, practice address, contact phone number and fax are as below. Patients can contact the office at the given phone number for appointment.

Provider Name Lynn Sewester Underwood
Specialization Counselor
Credentials MA, LCPC
Gender Female
Practice Address: 791 Wall St,
O Fallon, IL - 62269-2087

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 Number1700353679
NPI Enumeration Date: 30 Oct, 2018
NPI Last Update On: 17 Nov, 2025

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Lynn Sewester Underwood are as mentioned below.

License NumberSpecializationStateStatus
180.011860Professional Counselor IllinoisPrimary
180.011860Counselor IllinoisSecondary

Mailing Address

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

Lynn Sewester Underwood
791 Wall St,
O Fallon, IL - 62269-2087
Phone: 618-514-1154

Book an Appointment with Lynn Sewester Underwood

To schedule an appointment, contact Lynn Sewester Underwood at 791 Wall St, O Fallon, Illinois or call on below stated phone number.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Lynn Sewester Underwood:

Lynn Sewester Underwood is a therapist specializing in Professional Counselor. She is a licensed mental health practitioner trained to help individuals, couples, and groups address emotional, psychological, and behavioral challenges. She uses talk therapy and evidence-based counseling methods to support clients in managing mental health conditions, improving relationships, and developing coping strategies for life’s difficulties.

Yes, Lynn Sewester Underwood is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Lynn Sewester Underwood practices at 791 Wall St, O Fallon, Illinois, 62269-2087.

To schedule an appointment with Lynn Sewester Underwood, please contact the office at 618-514-1154.

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