NPPES file of Aug 9, 2026

Larry Day, M.D.

Specialist · Honolulu, HI

Larry Day, M.D. is a specialist with a practice address in Honolulu, Hawaii, and NPI 1316999220, issued on May 17, 2006. Check the license (Hawaii MD12536, 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
1316999220
Name
Larry Day
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
MD12536 HI
Self-reported in NPPES; status is on the state search
Practice location
3675 Kilauea Ave, Honolulu, HI 96816
Phone
(808) 737-2751
Enumerated
May 17, 2006
Record last updated
Jul 13, 2026
Fax
(808) 735-7047
Medicaid IDs
540824-02 HI
540824-01 HI
Medicare enrollment
Enrolled (PECOS I20040216000300); accepts Medicare assignment
Medical or professional school
Medical College Of Georgia School Of Medicine, 1998
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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8 nearest specialist records → All 350 in Hawaii → Look up another NPI →

Also registered at 3675 Kilauea Ave

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

  1. Lori KamemotoSpecialist1710938147
  2. Linda Ann Tom, M.D.Specialist1770651853
  3. Victor Valcour, M.D.Specialist1073554317

Verify Larry Day 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 MD12536    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

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Bills Medicare through one group practice

  1. Queens University Medical GroupHonolulu, HI

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

Larry Day among 350 specialist records in Hawaii

Larry Day, M.D. is one of 350 specialist records with a practice address in Hawaii. 26% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 59% newer
  • In a Medicare fileYes · 26% of these records are
  • In the CMS Doctors and Clinicians fileYes · 18% of these records are
  • Graduated1998 · median 1987 among the 64 with a school on file
  • Record last updated2026 · 81% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

156 specialist records list a practice address in Honolulu

They are 156 of the 12,408 NPPES records with a practice address in Honolulu, and 350 specialist records in Hawaii.

All 350 in Hawaii → Every provider in Honolulu → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Michele CzaraHonolulu, HI 968161770783730
  2. Ada DemleitnerHonolulu, HI 968161780186692
  3. Lori KamemotoHonolulu, HI 968161710938147
  4. Ryuichi Kuromaru, M.D., PH.D.Honolulu, HI 968161376742692
  5. Franklin Lee, MTHonolulu, HI 968161346303708
  6. Leith Saiki, LMTHonolulu, HI 968161407976665
  7. Mary Shepardson, L.M.T.Honolulu, HI 968161932365038
  8. Bruce Shiramizu, M.D.Honolulu, HI 968161043250723

Common questions

What is Larry Day, M.D.'s NPI number?

Larry Day, M.D.'s National Provider Identifier (NPI) is 1316999220, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Larry Day, M.D. located?

The NPPES record lists a practice address at 3675 Kilauea Ave, Honolulu, HI, 96816. Phone: (808) 737-2751. Providers update this record themselves, so call before visiting.

How can I verify Larry Day, M.D.'s license?

NPPES lists Hawaii license number MD12536, 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.