Diana Oneill, FNP
NPI 1427109990 · Family Nurse Practitioner · Hewlett, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Oneill, FNP is a Family Nurse Practitioner provider in Hewlett, NY (NPI 1427109990).
Provider details
- NPI number
- 1427109990
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- F330067 (NY)
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 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-12
- Last updated
- 2014-03-14
Frequently asked questions
- What is Diana Oneill's NPI number?
- Diana Oneill's National Provider Identifier (NPI) is 1427109990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Oneill's specialty?
- Diana Oneill is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Diana Oneill located?
- Diana Oneill's practice location on file with NPPES is 1436 Broadway, Hewlett, NY 11557-1405.
- What is Diana Oneill's phone number?
- The practice phone number listed in the NPPES registry for Diana Oneill is (929) 210-6550.
- Does Diana Oneill accept Medicare?
- Diana Oneill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Oneill's NPI active?
- Yes — Diana Oneill's NPI (1427109990) is active in the NPPES registry as of the last update on 2014-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.