Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Marie-Claire Lucia Barnaba, NP

Nurse Practitioner in Concord, CA · enumerated 2007.

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

National Provider Identifier

1518018696

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Registry record

Entity type Individual (Type 1)

Name Ms. Marie-Claire Lucia Barnaba

Credential NP

Sex Female

Practice address 2299 Bacon St, Concord, CA, 94520

Phone (925) 676-3450

Enumeration date Jan 15, 2007

Last updated in NPPES Jan 3, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 600972 (CA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Marie-Claire Barnaba?

The National Provider Identifier (NPI) for Marie-Claire Barnaba is 1518018696, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marie-Claire Barnaba practice?

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

Other providers at this practice address

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Elizabeth Gumas Nurse Practitioner · Concord, CA NPI 1801843792 Lucia Yang Specialist · Concord, CA NPI 1407890205 Sara Huerta Nurse Practitioner · Concord, CA NPI 1740204213 John Hadley Pulmonary Disease Physician · Concord, CA NPI 1750392437 Hiromi Takekuma Pulmonary Disease Physician · Concord, CA NPI 1275544389 Diablo Pulmonary Medical Group, Inc Pulmonary Disease Physician · Concord, CA NPI 1265443303 Diablo Valley Women Ob,Gyn Medical Group Inc. Obstetrics & Gynecology Physician · Concord, CA NPI 1609916790 East Bay Retina Consultants A Medical Group, Inc Ophthalmology Physician · Concord, CA NPI 1477857886

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-03.