George Mackel, PMHNP
NPI 1891082376 · Psychiatric/Mental Health Nurse Practitioner · Honolulu, HI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Mackel, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Honolulu, HI (NPI 1891082376).
Provider details
- NPI number
- 1891082376
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- APRN-2714 (HI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
63 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) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 63 | $58 |
Typical Medicare-allowed amounts for these services range $58–$58 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Divalproex Sodiumbrand: Divalproex Sodium Er | 177 | 22 |
| Clozapine | 114 | — |
| Benztropine Mesylate | 92 | 14 |
| Olanzapine | 92 | — |
| Risperidone | 84 | — |
| Hydroxyzine Hcl | 81 | 18 |
| Trazodone Hcl | 59 | 12 |
| Lithium Carbonatebrand: Lithium Carbonate Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$91 across 4 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
- 2011-07-05
- Last updated
- 2023-05-18
- Certified
- 2023-05-18
Frequently asked questions
- What is George Mackel's NPI number?
- George Mackel's National Provider Identifier (NPI) is 1891082376, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Mackel's specialty?
- George Mackel is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is George Mackel located?
- George Mackel's practice location on file with NPPES is 524 Keawe St # 521, Honolulu, HI 96813-3101.
- What is George Mackel's phone number?
- The practice phone number listed in the NPPES registry for George Mackel is (808) 777-9460.
- Does George Mackel accept Medicare?
- George Mackel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Mackel's NPI active?
- Yes — George Mackel's NPI (1891082376) is active in the NPPES registry as of the last update on 2023-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.