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Dr. Thomas Horn Jr., D.O.

Psychiatry Physician in Chesterfield, MO · enumerated 2010.

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

National Provider Identifier

1841516598

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Horn Jr.
Credential D.O.
Sex Male
Practice address 1176 Town and Country Commons Dr, Chesterfield, MO, 63017
Phone (314) 251-2870
Fax (314) 251-2871
Enumeration date Apr 19, 2010
Last updated in NPPES Jul 18, 2023

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 2014000221 (MO) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
1841516598 Medicaid MO -

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

How do I verify Thomas Horn's NPI record?
Cross-check NPI 1841516598 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1841516598 active?
Yes, as of the latest NPPES snapshot, NPI 1841516598 is active (record last updated 2023-07-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-18.