Mallory Ann Cook, MSW, LCSW
Clinical Social Worker · O Fallon, IL
Mallory Ann Cook, MSW, LCSW is a clinical social worker with a practice address in O Fallon, Illinois, and NPI 1851635338, issued on Nov 21, 2012. Check the license (Illinois 149.018067, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mallory Ann Cook
- Credential
- MSW, LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 149.018067 IL
Self-reported in NPPES; status is on the state search - Practice location
- 787 Sunset Blvd, O Fallon, IL 62269
- Phone
- (618) 292-8964
- Enumerated
- Nov 21, 2012
- Record last updated
- Apr 19, 2022
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 13,637 in Illinois → Look up another NPI →
Also registered at 787 Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Underwood, D.C.Chiropractor1508033960
Verify Mallory Ann Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 149.018067Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mallory Ann Cook among 13,637 clinical social worker records in Illinois
Mallory Ann Cook, MSW, LCSW is one of 13,637 clinical social worker records with a practice address in Illinois. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2012, is newer than 32% of them.
- NPI issued2012 · 32% of these records are older, 65% newer
- In a Medicare fileNo · 14% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 clinical social worker records list a practice address in O Fallon
They are 29 of the 1,077 NPPES records with a practice address in O Fallon, and 13,637 clinical social worker records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 13,637 in Illinois → Every provider in O Fallon → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Scott Baer, LCSWO Fallon, IL 622691639363229
- Ella Duncan, LCSWO Fallon, IL 622691386620375
- James Harting, LCSWO Fallon, IL 622691932337409
- Diane Jackson, LMSW-ACPO Fallon, IL 622691922160720
- Christianne Judy, MSW, LCSWO Fallon, IL 622691023186806
- April LomaxO Fallon, IL 622691871884312
- Janel Morey-Sassano, LCSWO Fallon, IL 622691316240559
- Suzanne Mullins, LCSWO Fallon, IL 622691851695027
Common questions
What is Mallory Ann Cook, MSW, LCSW's NPI number?
Mallory Ann Cook, MSW, LCSW's National Provider Identifier (NPI) is 1851635338, issued on Nov 21, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mallory Ann Cook, MSW, LCSW located?
The NPPES record lists a practice address at 787 Sunset Blvd, O Fallon, IL, 62269. Phone: (618) 292-8964. Providers update this record themselves, so call before visiting.
How can I verify Mallory Ann Cook, MSW, LCSW's license?
NPPES lists Illinois license number 149.018067, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.