Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Otis Sumter Warr IV, M.D.

Specialist in Mountain Home, AR · enumerated 2005.

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

National Provider Identifier

1043214323

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Registry record

Entity type Individual (Type 1)

Name Dr. Otis Sumter Warr IV

Credential M.D.

Sex Male

Practice address 555 W 6th St, Mountain Home, AR, 72653

Phone (870) 425-8288

Fax (870) 425-8299

Enumeration date Jun 2, 2005

Last updated in NPPES Feb 29, 2008

Taxonomy & licenses

174400000X Specialist Other Service Providers · License E3744 (AR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
150550001	Medicaid	AR	-
03120015100	Other	AR	QUAL CHOICE #
A005	Other	AR	CHAMPUS/TRICARE #
5M662	Other	AR	AR BCBS #

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

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.

What specialty is Otis Warr?

Otis Warr is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-29.