Mary Alexis Cox

Mary Alexis Cox is a Behavior Analyst provider (Behavior Analyst) practicing in O Fallon, IL, registered in the NPPES registry with NPI 1891350674 since 2019.

✓ Active NPI ✓ Valid NPI checksum

NPI	1891350674
Entity type	Individual (Type 1)
Name	Mary Alexis Cox
Sex	Female
Practice address	634 N MAIN ST STE 4, O Fallon, IL, 62269
Phone	6182765870
Enumeration date	2019-05-07
Last updated in NPPES	2019-06-20

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Secondary	2019003789	MO
103K00000X	Behavior Analyst	Primary	1-19-34631	—

Copy-ready billing details

Provider: Mary Cox
NPI: 1891350674
Taxonomy: 103K00000X (Behavior Analyst)
Address: 634 N MAIN ST STE 4, O Fallon, IL, 62269

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1992210272	Alexzandra Brawley	Individual	Behavior Technician	O Fallon, IL
1740796671	Cyara Coleman	Individual	Behavior Analyst	O Fallon, IL
1891203733	Adrienne Nerini	Individual	Behavior Technician	O Fallon, IL
1811405780	Josef Dabrowski	Individual	Behavior Technician	O Fallon, IL
1659889467	Lauren Craft	Individual	Behavior Technician	O Fallon, IL
1255830790	Danielle Maggio	Individual	Behavior Analyst	O Fallon, IL
1821598293	Angela Mangum	Individual	Behavior Analyst	O Fallon, IL
1467952838	Victoria Allen	Individual	Behavior Technician	O Fallon, IL

Verify this record

Cross-check NPI 1891350674 against the authoritative CMS record: view Mary Alexis Cox on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

What specialty is Mary Cox?

Mary Cox is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-06-20.