Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Barbara J Gregory, D.C.

Chiropractor in Tamuning, GU · enumerated 2013 · practices at Offices of Dr. Barbara Onedera-Gregory & Dr. Robert W. Gregory, P.C..

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

National Provider Identifier

1013258045

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Registry record

Entity type Individual (Type 1)

Name Dr. Barbara J Gregory

Credential D.C.

Sex Female

Practice address 744 N Marine Corps Dr Ste 110, Tamuning, GU, 96913

Phone (671) 649-9355

Fax (671) 649-9255

Enumeration date Mar 15, 2013

Last updated in NPPES Nov 24, 2021

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License C-7 (GU) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

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 Barbara Gregory practice?

The practice location on file with NPPES is in Tamuning, GU. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Barbara Gregory?

The National Provider Identifier (NPI) for Barbara Gregory is 1013258045, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Robert Gregory Chiropractor · Tamuning, GU NPI 1144424490 Offices of Dr. Barbara Onedera-Gregory & Dr. Robert W. Gregory, P.C. Chiropractor · Tamuning, GU NPI 1821432675

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-24.