Donald Grey, PHYSICIAN ASSISTANT
NPI 1386363257 · Emergency Medicine Physician · Waianae, HI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Grey, PHYSICIAN ASSISTANT is a Emergency Medicine Physician provider in Waianae, HI (NPI 1386363257).
Provider details
- NPI number
- 1386363257
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- PHYSICIAN ASSISTANT
- Sex
- Male
- Sole proprietor
- No
- License
- AMD-1166-0 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 21 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 16 |
| Cephalexin | 13 | 13 |
| Doxycycline Hyclate | 13 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-08-24
- Last updated
- 2023-02-14
- Certified
- 2023-02-14
Frequently asked questions
- What is Donald Grey's NPI number?
- Donald Grey's National Provider Identifier (NPI) is 1386363257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Grey's specialty?
- Donald Grey is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Grey located?
- Donald Grey's practice location on file with NPPES is 86-260 Farrington Hwy, Waianae, HI 96792-3128.
- What is Donald Grey's phone number?
- The practice phone number listed in the NPPES registry for Donald Grey is (808) 697-3300.
- Does Donald Grey accept Medicare?
- Donald Grey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Grey's NPI active?
- Yes — Donald Grey's NPI (1386363257) is active in the NPPES registry as of the last update on 2023-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.