NPPES file of Aug 9, 2026

Stephen D. Arnold, M.D.

Internal Medicine Physician · Honolulu, HI

Stephen D. Arnold, M.D. is an internal medicine physician with a practice address in Honolulu, Hawaii, and NPI 1598859928, issued on Oct 2, 2006. Check the license (Hawaii MD-3407, 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
1598859928
Name
Stephen D. Arnold
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
MD-3407 HI
Self-reported in NPPES; status is on the state search
Practice location
888 S King St, Honolulu, HI 96813
Phone
(808) 522-4511
Enumerated
Oct 2, 2006
Record last updated
Aug 11, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(808) 522-4516
Medicaid ID
03951101 HI
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. Swaty Arora, MDHematology & Oncology Physician1194037432
  5. Whitney Reigh Asao, OTD, OTR/LOccupational Therapist1568082766
  6. Mary Grace Bagalso, CRNACertified Registered Nurse Anesthetist1609014141

Verify Stephen D. Arnold in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersHawaii Medical Board
    Search for license MD-3407
    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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2.6 times the Medicare Part D claims of the average internal medicine physician in 2024

8,335 Medicare Part D claims for 786 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 180 claims were for opioids.

  1. Stephen Arnold8,335
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium649 claims
  2. Losartan Potassium563 claims
  3. Amlodipine Besylate555 claims
  4. Rosuvastatin Calcium349 claims
  5. Metoprolol Succinate285 claims
  6. Levothyroxine Sodium227 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.

Stephen D. Arnold among 902 internal medicine physician records in Hawaii

Stephen D. Arnold, M.D. is one of 902 internal medicine physician records with a practice address in Hawaii. 71% 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, 55% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 54% of these records are
  • Record last updated2010 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

579 internal medicine physician records list a practice address in Honolulu

They are 579 of the 12,408 NPPES records with a practice address in Honolulu, and 902 internal medicine physician records in Hawaii.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Justin Barratt, M.D.Honolulu, HI 968131861481574
  2. Dee-Ann Carpenter, MDHonolulu, HI 968131720080799
  3. Bo-Yin ChangHonolulu, HI 968131356314777
  4. Cleland Child, M.D.Honolulu, HI 968131548242076
  5. Dominic Chow, M.D.Honolulu, HI 968131063464972
  6. Michael Dung, MDHonolulu, HI 968131811963986
  7. Theodore Harada, MDHonolulu, HI 968131558324988
  8. Janet Kao, M.D.Honolulu, HI 968131467459131

Common questions

What is Stephen D. Arnold, M.D.'s NPI number?

Stephen D. Arnold, M.D.'s National Provider Identifier (NPI) is 1598859928, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen D. Arnold, M.D. located?

The NPPES record lists a practice address at 888 S King St, Honolulu, HI, 96813. Phone: (808) 522-4511. Providers update this record themselves, so call before visiting.

How can I verify Stephen D. Arnold, M.D.'s license?

NPPES lists Hawaii license number MD-3407, 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 Stephen D. Arnold, M.D. prescribe under Medicare Part D?

In 2024, Stephen D. Arnold, M.D. had 8,335 Medicare Part D claims for 786 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.