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

MS. Barbara O'Sullivan, NP, MSN

Individual provider Primary Care Nurse Practitioner · NPI 1629227327

MS. Barbara O'Sullivan, NP, MSN is a Primary Care Nurse Practitioner in Brooklyn, New York. Licensed in New York. Registered with an NPI since 2008.

Licensed in
NY
In the registry since
2008
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.

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Practice location Address checks out

450 Clarkson Ave
Brooklyn, NY 11203-2056
Phone: (718) 270-2857
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Primary Care Nurse Practitioner (primary) Taxonomy 363LP2300X · Licence F3024401 (NY)

Record details

NPI number1629227327
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP , MSN
Sole proprietorNo
NPI enumeratedSeptember 17, 2008
Last updated in NPPESSeptember 7, 2023

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