Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mrs. Karen Louise O'Brien, ANP

Individual provider Adult Health Nurse Practitioner · NPI 1265872048

Mrs. Karen Louise O'Brien, ANP is an Adult Health Nurse Practitioner in Roslyn, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2013

Practice location Address checks out

100 Port Washington Blvd
Roslyn, NY 11576-1347
Phone: (516) 562-6000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence F305840 (NY)

Record details

NPI number1265872048
Entity typeIndividual (Type 1)
GenderFemale
Credentials ANP
Sole proprietorYes
NPI enumeratedJune 26, 2013
Last updated in NPPESJune 26, 2013

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