NPPES file of Aug 9, 2026

Matthew Buan Messier, PSYD

Clinical Psychologist · Waianae, HI

Matthew Buan Messier, PSYD is a clinical psychologist with a practice address in Waianae, Hawaii, and NPI 1811726110, issued on Jul 26, 2024. Check the license (Hawaii PSY-2210, as entered in NPPES) with the Hawaii board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1811726110
Name
Matthew Buan Messier
Credential
PSYD
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PSY-2210 HI
Self-reported in NPPES; status is on the state search
Practice location
86-260 Farrington Hwy, Waianae, HI 96792
Phone
(808) 697-3469
Enumerated
Jul 26, 2024
Record last updated
Jul 1, 2026
Medicare enrollment
Enrolled (PECOS I20241101002514); 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.
Download card Updates feed

8 nearest clinical psychologist records → All 640 in Hawaii → Look up another NPI →

Also registered at 86-260 Farrington Hwy

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

  1. Christina Adams, M.D.Family Medicine Physician1215132915
  2. Tiana Rose Ahue, PA-CPhysician Assistant1740731546
  3. Ku'Upua Akana, PHARM.DPharmacist1851679377
  4. Cynthia Akasaki, R.D.Registered Dietitian1346434321
  5. Kevin Akiyama, PSY.DClinical Psychologist1487974838
  6. Razel Alibin, FNPFamily Nurse Practitioner1043000805

Verify Matthew Buan Messier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Hawaii board licenses this profession
    Search for license PSY-2210    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 Hawaii 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Waianae District Comprehensive Health And Hospital Board IncEwa Beach, HI

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

Matthew Buan Messier among 640 clinical psychologist records in Hawaii

Matthew Buan Messier, PSYD is one of 640 clinical psychologist records with a practice address in Hawaii. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 98% of them.

  • NPI issued2024 · 98% of these records are older, 1% newer
  • In a Medicare fileYes · 15% of these records are
  • In the CMS Doctors and Clinicians fileYes · 29% of these records are
  • Graduated2023 · median 2006 among the 186 with a school on file
  • Record last updated2026 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

25 clinical psychologist records list a practice address in Waianae

They are 25 of the 440 NPPES records with a practice address in Waianae, and 640 clinical psychologist records in Hawaii.

All 640 in Hawaii → Every provider in Waianae → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Kevin Akiyama, PSY.DWaianae, HI 967921487974838
  2. Mimi Andjelic, PSYDWaianae, HI 967921053779785
  3. Kasey Arita-Nakamine, PSY.D.Waianae, HI 967921447631932
  4. Leahna BartonWaianae, HI 967921902214851
  5. Kamanaopono Crabbe, PHDWaianae, HI 967921992907091
  6. Patti Isaacs, PH.D.Waianae, HI 967921255731162
  7. Wayne McClellan, PSY.D.Waianae, HI 967921790938637
  8. Kristy Sakai-Costigan, PSY.D.Waianae, HI 967921578898672

Common questions

What is Matthew Buan Messier, PSYD's NPI number?

Matthew Buan Messier, PSYD's National Provider Identifier (NPI) is 1811726110, issued on Jul 26, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Matthew Buan Messier, PSYD located?

The NPPES record lists a practice address at 86-260 Farrington Hwy, Waianae, HI, 96792. Phone: (808) 697-3469. Providers update this record themselves, so call before visiting.

How can I verify Matthew Buan Messier, PSYD's license?

NPPES lists Hawaii license number PSY-2210, as entered by the provider. Search the Hawaii board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.