NPPES file of Aug 9, 2026

Marie-Claire Lucia Barnaba, NP

Nurse Practitioner · Concord, CA

Marie-Claire Lucia Barnaba, NP is a nurse practitioner with a practice address in Concord, California, and NPI 1518018696, issued on Jan 15, 2007. Check the license (California 600972, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518018696
Name
Marie-Claire Lucia Barnaba
Credential
NP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
600972 CA
Self-reported in NPPES; status is on the state search
Practice location
2299 Bacon St, Concord, CA 94520
Phone
(925) 676-3450
Enumerated
Jan 15, 2007
Record last updated
Jan 3, 2022
Medicare enrollment
Enrolled (PECOS I20131205000118); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2299 Bacon St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sloane Blair, CPNP-PCPediatric Nurse Practitioner1568917540
  2. Elizabeth Gumas, NPNurse Practitioner1801843792
  3. John Hadley, M.D.Pulmonary Disease Physician1750392437
  4. Sara Huerta, ARNPNurse Practitioner1740204213
  5. Hiromi Takekuma, D.O.Pulmonary Disease Physician1275544389
  6. Lucia Yang, M.D.Specialist1407890205

Verify Marie-Claire Lucia Barnaba in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 600972
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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23% fewer Medicare Part D claims than the average nurse practitioner in 2024

858 Medicare Part D claims for 327 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.

  1. Marie-Claire Barnaba858
  2. Specialty average1,109

Most prescribed

  1. Estradiol279 claims
  2. Myrbetriq125 claims
  3. Trospium Chloride104 claims
  4. Estring77 claims
  5. Mirabegron Er50 claims
  6. Clobetasol Propionate34 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Permanente Medical Group IncVallejo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marie-Claire Lucia Barnaba among 8,223 nurse practitioner records in California

Marie-Claire Lucia Barnaba, NP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 18% of them.

  • NPI issued2007 · 18% of these records are older, 73% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2002 · median 2017 among the 3,425 with a school on file
  • Record last updated2022 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

37 nurse practitioner records list a practice address in Concord

They are 37 of the 9,328 NPPES records with a practice address in Concord, and 8,223 nurse practitioner records in California.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Irina Abovsky-Akkerman, NPConcord, CA 945201982769345
  2. Christine Costa, NPConcord, CA 945201194875047
  3. Katrece Davis, NPConcord, CA 945201497800015
  4. Constance Dimidjian, NPConcord, CA 945201639224637
  5. Janet ElderConcord, CA 945201942352752
  6. Michelle Fahlsing, NPConcord, CA 945201124173117
  7. Elizabeth Gumas, NPConcord, CA 945201801843792
  8. Debra Hall, NPConcord, CA 945201700936655

Common questions

What is Marie-Claire Lucia Barnaba, NP's NPI number?

Marie-Claire Lucia Barnaba, NP's National Provider Identifier (NPI) is 1518018696, issued on Jan 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Marie-Claire Lucia Barnaba, NP located?

The NPPES record lists a practice address at 2299 Bacon St, Concord, CA, 94520. Phone: (925) 676-3450. Providers update this record themselves, so call before visiting.

How can I verify Marie-Claire Lucia Barnaba, NP's license?

NPPES lists California license number 600972, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Marie-Claire Lucia Barnaba, NP prescribe under Medicare Part D?

In 2024, Marie-Claire Lucia Barnaba, NP had 858 Medicare Part D claims for 327 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.