Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Orin Paul Trentham III, MD

Internal Medicine Physician in Russellville, AR · enumerated 2006.

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

National Provider Identifier

1992740260

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Registry record

Entity type Individual (Type 1)

Name Dr. Orin Paul Trentham III

Credential MD

Sex Male

Practice address 1808 W Main St, Russellville, AR, 72801

Phone (479) 968-2841

Enumeration date Jun 19, 2006

Last updated in NPPES Dec 13, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License E-12463 (AR) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 106911 (MO) 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
100165470B	Medicaid	KS	-
100181910A	Medicaid	OK	-
207744806	Medicaid	MO	-
9296	Other	MO	ANTHEM
110111900	Other	-	RR MEDICARE

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

What specialty is Orin Trentham?

Orin Trentham is registered in NPPES with the primary taxonomy of Internal Medicine Physician. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-13.