Lauren O'Brien, FNP
NPI 1477138857 · Family Nurse Practitioner · West Islip, NY
Lauren O'Brien, FNP is a Family Nurse Practitioner provider in West Islip, NY (NPI 1477138857).
Provider details
- NPI number
- 1477138857
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 346400 (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
5 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
- 2021-03-16
- Last updated
- 2021-03-16
- Certified
- 2021-03-16
Frequently asked questions
- What is Lauren O'Brien's NPI number?
- Lauren O'Brien's National Provider Identifier (NPI) is 1477138857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lauren O'Brien's specialty?
- Lauren O'Brien is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lauren O'Brien located?
- Lauren O'Brien's practice location on file with NPPES is 1000 Montauk Hwy, West Islip, NY 11795-4927.
- What is Lauren O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Lauren O'Brien is (631) 376-3000.
- Is Lauren O'Brien's NPI active?
- Yes — Lauren O'Brien's NPI (1477138857) is active in the NPPES registry as of the last update on 2021-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.