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

Mrs. Rosemarie O'Brien, RN

Individual provider Registered Nurse · NPI 1912163056

Mrs. Rosemarie O'Brien, RN is a Registered Nurse in Port Jefferson Station, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2008
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

1010 Route 112 Ste 210
Port Jefferson Station, NY 11776-3097
Phone: (631) 473-1200
Show map & directions

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

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence 306521 (NY)

Record details

NPI number1912163056
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorYes
NPI enumeratedJuly 29, 2008
Last updated in NPPESJuly 29, 2008

Other providers in Port Jefferson Station