NPPES file of Aug 9, 2026

Mathew B. Barnett, FNP C

Nurse Practitioner · Santa Barbara, CA

Mathew B. Barnett, FNP C is a nurse practitioner with a practice address in Santa Barbara, California, and NPI 1598823742, issued on Dec 4, 2006. Check the license (California NPF12740, 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
1598823742
Name
Mathew B. Barnett
Credential
FNP C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
NPF12740 CA
Self-reported in NPPES; status is on the state search
Practice location
400 W Pueblo St, Santa Barbara, CA 93105
Phone
(805) 682-7111
Enumerated
Dec 4, 2006
Record last updated
Aug 13, 2025
Medicaid ID
NPF12740 CA
Medicare enrollment
Enrolled (PECOS I20070330000583); accepts Medicare assignment
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 400 W Pueblo St

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

  1. Tabitha Abraham, FNPFamily Nurse Practitioner1811558042
  2. Kristina Abramyan, FNPFamily Nurse Practitioner1114810686
  3. Tamanna AhluwaliaStudent in an Organized Health Care Education/Training Program1376338384
  4. Jung Hwa Ahn, MDStudent in an Organized Health Care Education/Training Program1083553572
  5. Fares Al-Khouja, MDStudent in an Organized Health Care Education/Training Program1497441778
  6. Sarah Anderson, MDStudent in an Organized Health Care Education/Training Program1154172872

Verify Mathew B. Barnett 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 NPF12740
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average nurse practitioner in 2024

29 Medicare Part D claims for 11 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Mathew Barnett29
  2. Specialty average1,109

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.

Industry payments in 2024: $187.34

12 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mathew Barnett$187.34
  2. Specialty average$791.64

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Cottage Clinical Network LLCSan Luis Obispo, CA

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

Mathew B. Barnett among 8,223 nurse practitioner records in California

Mathew B. Barnett, FNP C 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 82% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2000 · median 2017 among the 3,425 with a school on file
  • Record last updated2025 · 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).

Nurse Practitioner providers in California

There are 8,223 nurse practitioner records in California.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Joanna BuitragoSanta Barbara, CA 931051386006468
  2. John Chappell, RNSanta Barbara, CA 931051063655728
  3. Lawrence Crisostomo, MSN, AGACNPSanta Barbara, CA 931051962984336
  4. Jessica Davis, FNPSanta Barbara, CA 931051528215076
  5. Kim Duncan, FNPSanta Barbara, CA 931051982896221
  6. Morgan Findlay, NPSanta Barbara, CA 931051063097798
  7. Jillian Loewen, NPSanta Barbara, CA 931051154609600
  8. Andrea McLarty, NP (RN MSN NP)Santa Barbara, CA 931051841659927

Common questions

What is Mathew B. Barnett, FNP C's NPI number?

Mathew B. Barnett, FNP C's National Provider Identifier (NPI) is 1598823742, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mathew B. Barnett, FNP C located?

The NPPES record lists a practice address at 400 W Pueblo St, Santa Barbara, CA, 93105. Phone: (805) 682-7111. Providers update this record themselves, so call before visiting.

How can I verify Mathew B. Barnett, FNP C's license?

NPPES lists California license number NPF12740, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Mathew B. Barnett, FNP C prescribe under Medicare Part D?

In 2024, Mathew B. Barnett, FNP C had 29 Medicare Part D claims for 11 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.