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James Grant Barr, M.D., PH.D.

Nephrology Physician in Columbia, TN · enumerated 2005.

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

National Provider Identifier

1831181957

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Registry record

Entity type Individual (Type 1)
Name James Grant Barr
Credential M.D., PH.D.
Sex Male
Practice address 854 W James Campbell Blvd, Ste. 101a, Columbia, TN, 38401
Phone (931) 388-3209
Fax (931) 388-0105
Enumeration date Aug 16, 2005
Last updated in NPPES May 24, 2012

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 17679 (TN) 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
3067259 Medicaid TN -

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 does James Barr practice?
The practice location on file with NPPES is in Columbia, TN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for James Barr?
The National Provider Identifier (NPI) for James Barr is 1831181957, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-24.