Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Allison N Smith, MSN, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1821805011

Allison N Smith, MSN, PMHNP-BC is a Nurse Practitioner in O Fallon, Illinois. Qualified in 2024, 2 years ago. Practices with St Louis Behavioral Medicine Institute Inc, a 70-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Missouri.

Years since qualifying
2
Licensed in
IL, MO
In the registry since
2024
Specialties on file
2
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

791 Wall St
O Fallon, IL 62269-2087
Phone: (283) 223-7997
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 209031884 (IL)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 2024042847 (MO)

Record details

NPI number1821805011
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , PMHNP-BC
Sole proprietorYes
NPI enumeratedDecember 12, 2024
Last updated in NPPESMay 12, 2026
Certification dateMay 12, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice St. Louis Behavioral Medicine Institute Inc — 70 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in O Fallon