NPPES file of Aug 9, 2026

Reuben C. Guerrero, M.D.

Medical Oncology Physician · Honolulu, HI

Reuben C. Guerrero, M.D. is a medical oncology physician with a practice address in Honolulu, Hawaii, and NPI 1417961038, issued on Jul 28, 2006. Check the license (Hawaii MD-2511, as entered in NPPES) on the Hawaii Medical Board; 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
1417961038
Name
Reuben C. Guerrero
Credential
M.D.
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
MD-2511 HI
Self-reported in NPPES; status is on the state search
Practice location
888 S King St, Honolulu, HI 96813
Phone
(808) 522-4333
Enumerated
Jul 28, 2006
Record last updated
Sep 29, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(808) 522-4314
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 888 S King St

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

  1. Ayman Abdul-Ghani, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1548449218
  2. Cedric Akau, M.D.Physical Medicine & Rehabilitation Physician1437254034
  3. Christopher Apostolides, PAPhysician Assistant1083655153
  4. Stephen Arnold, M.D.Internal Medicine Physician1598859928
  5. Swaty Arora, MDHematology & Oncology Physician1194037432
  6. Whitney Reigh Asao, OTD, OTR/LOccupational Therapist1568082766

Verify Reuben C. Guerrero in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersHawaii Medical Board
    Search for license MD-2511    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
Open the Hawaii license search

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98% fewer Medicare Part D claims than the average medical oncology physician in 2024

16 Medicare Part D claims, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Reuben Guerrero16
  2. Specialty average703

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.

Medical Oncology Physician providers in Hawaii

There are 10 medical oncology physician records in Hawaii.

All 10 in Hawaii → Every provider in Honolulu →

Other medical oncology physician records in Hawaii

  1. Clayton Chan, MDHonolulu, HI1346340239
  2. Shaun Donegan, MDHonolulu, HI1104038249
  3. Matthew Ebia, MDHonolulu, HI1811361678
  4. Jami Fukui, MDHonolulu, HI1790084408
  5. Kevin Loh, M DHonolulu, HI1518244631
  6. Charles Miller, MDHonolulu, HI1568526358
  7. Aileen Suzui, M.D.Honolulu, HI1841384732
  8. Naoto Ueno, M.D. PHDHonolulu, HI1851497770
  9. Kitty Victoria, MDKealakekua, HI1871917633

Common questions

What is Reuben C. Guerrero, M.D.'s NPI number?

Reuben C. Guerrero, M.D.'s National Provider Identifier (NPI) is 1417961038, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Reuben C. Guerrero, M.D. located?

The NPPES record lists a practice address at 888 S King St, Honolulu, HI, 96813. Phone: (808) 522-4333. Providers update this record themselves, so call before visiting.

How can I verify Reuben C. Guerrero, M.D.'s license?

NPPES lists Hawaii license number MD-2511, as entered by the provider. Search the Hawaii Medical Board at https://cca.hawaii.gov/pvl/boards/medical/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Reuben C. Guerrero, M.D. prescribe under Medicare Part D?

In 2024, Reuben C. Guerrero, M.D. had 16 Medicare Part D claims; the average among medical oncology physician prescribers was 703. 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.

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.