Stephen Arnold, M.D.
NPI 1598859928 · Internal Medicine Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Arnold, M.D. is a Internal Medicine Physician provider in Honolulu, HI (NPI 1598859928).
Provider details
- NPI number
- 1598859928
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD-3407 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
886 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 509 | $79 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 157 | $66 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 146 | $46 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 50 | $8 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 12 | $107 |
| Transitional Care Management Services for Problem of High Complexity |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 124 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 649 | 196 |
| Losartan Potassium | 563 | 160 |
| Amlodipine Besylate | 555 | 176 |
| Rosuvastatin Calcium | 349 | 113 |
| Metoprolol Succinate | 285 | 84 |
| Levothyroxine Sodium | 227 | 56 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2010-08-11
Frequently asked questions
- What is Stephen Arnold's NPI number?
- Stephen Arnold's National Provider Identifier (NPI) is 1598859928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Arnold's specialty?
- Stephen Arnold is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Arnold located?
- Stephen Arnold's practice location on file with NPPES is 888 S King St, Honolulu, HI 96813-3009.
- What is Stephen Arnold's phone number?
- The practice phone number listed in the NPPES registry for Stephen Arnold is (808) 522-4511.
- Does Stephen Arnold accept Medicare?
- Stephen Arnold is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Arnold's NPI active?
- Yes — Stephen Arnold's NPI (1598859928) is active in the NPPES registry as of the last update on 2010-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.