Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Timothy Lyon Arnold, D.O.

Psychiatry Physician in Meridian, MS · enumerated 2006.

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

National Provider Identifier

1861462178

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Registry record

Entity type Individual (Type 1)

Name Dr. Timothy Lyon Arnold

Credential D.O.

Sex Male

Practice address 5000 Highway 39 N, Alliance Health Center Inc, Meridian, MS, 39301

Phone (601) 483-6211

Fax (601) 482-3623

Enumeration date Jan 26, 2006

Last updated in NPPES Jun 25, 2013

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MB07027800 (NJ) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 19843 (MS) 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
06481203	Medicaid	MS	-
8861102	Medicaid	NJ	-

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 Timothy Arnold's NPI record?

Cross-check NPI 1861462178 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861462178 active?

Yes, as of the latest NPPES snapshot, NPI 1861462178 is active (record last updated 2013-06-25).

Other providers at this practice address

Browse all →

Alliance Health Center Inc Psychiatric Hospital · Meridian, MS NPI 1831184951 Cindy Hernandez Psychiatric/Mental Health Nurse Practitioner · Meridian, MS NPI 1952357154 Sheridan Tucker Psychiatry Physician · Meridian, MS NPI 1801971379 Frances Avera Clinical Social Worker · Meridian, MS NPI 1063554665 Alliance Health Center, Inc. Psychiatric Residential Treatment Facility · Meridian, MS NPI 1932232931 Alliance Health Center Pharmacy Institutional Pharmacy · Meridian, MS NPI 1487787347 Jessica Gordon Psychiatry Physician · Meridian, MS NPI 1215145222 Leigh Gillespie Child & Adolescent Psychiatric/Mental Health Registered Nurse · Meridian, MS NPI 1386893717

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-25.