Marianna Karewicz, APRN, NP-C
NPI 1255609392 · Family Nurse Practitioner · Honolulu, HI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianna Karewicz, APRN, NP-C is a Family Nurse Practitioner provider in Honolulu, HI (NPI 1255609392).
Provider details
- NPI number
- 1255609392
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN, NP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1352 (HI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,360 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 640 | $2 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 270 | $82 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 158 | $47 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 111 | $55 |
| Destruction of Skin Growth, 1-14 Growths17110 | 94 | $62 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 144 | 69 |
| Clobetasol Propionate | 123 | 62 |
| Triamcinolone Acetonide | 96 | 70 |
| Mupirocin | 89 | 67 |
| Ammonium Lactate | 89 | 40 |
| Clindamycin Phosphate | 72 | 31 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 64 | 27 |
| Dupilumab |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,500 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-12-04
- Last updated
- 2015-11-07
Frequently asked questions
- What is Marianna Karewicz's NPI number?
- Marianna Karewicz's National Provider Identifier (NPI) is 1255609392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianna Karewicz's specialty?
- Marianna Karewicz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marianna Karewicz located?
- Marianna Karewicz's practice location on file with NPPES is 888 S King St, Honolulu, HI 96813-3097.
- What is Marianna Karewicz's phone number?
- The practice phone number listed in the NPPES registry for Marianna Karewicz is (808) 522-4360.
- Does Marianna Karewicz accept Medicare?
- Marianna Karewicz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianna Karewicz's NPI active?
- Yes — Marianna Karewicz's NPI (1255609392) is active in the NPPES registry as of the last update on 2015-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.