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Jacquelyn Hall-Davis,M.D. Ltd

Child & Adolescent Psychiatry Physician in O Fallon, IL · enumerated 2014 · authorized official Jacquelyn Hall-Davis, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1699173542

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Registry record

Entity type Organization (Type 2)
Legal business name Jacquelyn Hall-Davis,M.D. Ltd
Practice address 1669 Windham Way, Suite B, O Fallon, IL, 62269
Phone (618) 622-9240
Fax (618) 622-9241
Enumeration date Dec 9, 2014
Last updated in NPPES Dec 9, 2014

Taxonomy & classification

2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians · License 036080270 (IL) Primary

Authorized official

Name Jacquelyn Hall-Davis
Title President
Phone (618) 622-9240

Other identifiers

Identifier Type State Issuer
540653 Other IL TRICARE
036080270 Medicaid IL -

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.

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Frequently asked questions

Where is Jacquelyn Hall-Davis,M.D. Ltd located?
The practice location on file with NPPES is in O Fallon, IL.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-12-09. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-09.