Mallory Cook, MSW, LCSW
NPI 1851635338 · Clinical Social Worker · O Fallon, IL
Mallory Cook, MSW, LCSW is a Clinical Social Worker provider in O Fallon, IL (NPI 1851635338).
Provider details
- NPI number
- 1851635338
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 149.018067 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-11-21
- Last updated
- 2022-04-19
- Certified
- 2022-04-19
Frequently asked questions
- What is Mallory Cook's NPI number?
- Mallory Cook's National Provider Identifier (NPI) is 1851635338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Cook's specialty?
- Mallory Cook is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mallory Cook located?
- Mallory Cook's practice location on file with NPPES is 787 Sunset Blvd, O Fallon, IL 62269-1960.
- What is Mallory Cook's phone number?
- The practice phone number listed in the NPPES registry for Mallory Cook is (618) 292-8964.
- Is Mallory Cook's NPI active?
- Yes — Mallory Cook's NPI (1851635338) is active in the NPPES registry as of the last update on 2022-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.