Mark Lum, M.D.
NPI 1679684443 · Internal Medicine Physician · Honolulu, HI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Lum, M.D. is a Internal Medicine Physician provider in Honolulu, HI (NPI 1679684443).
Provider details
- NPI number
- 1679684443
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4873 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 341 | 124 |
| Losartan Potassium | 278 | 101 |
| Amlodipine Besylate | 184 | 69 |
| Metoprolol Succinate | 121 | 43 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 119 | 38 |
| Levothyroxine Sodium | 110 | 39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2010-02-18
Frequently asked questions
- What is Mark Lum's NPI number?
- Mark Lum's National Provider Identifier (NPI) is 1679684443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lum's specialty?
- Mark Lum is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lum located?
- Mark Lum's practice location on file with NPPES is 1380 Lusitana St, Honolulu, HI 96813-2421.
- What is Mark Lum's phone number?
- The practice phone number listed in the NPPES registry for Mark Lum is (808) 524-3020.
- Does Mark Lum accept Medicare?
- Mark Lum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Lum's NPI active?
- Yes — Mark Lum's NPI (1679684443) is active in the NPPES registry as of the last update on 2010-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.