Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Katherine O'Connor Estrin, MSN, RN, CPNP-PC

Individual provider Pediatric Nurse Practitioner · NPI 1134648496

Katherine O'Connor Estrin, MSN, RN, CPNP-PC is a Pediatric Nurse Practitioner in Boston, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2017
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Nurse Practitioner (primary) Taxonomy 363LP0200X · Licence 2286363 (MA)

Record details

NPI number1134648496
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , RN , CPNP-PC
Sole proprietorYes
NPI enumeratedSeptember 18, 2017
Last updated in NPPESFebruary 28, 2024
Certification dateFebruary 28, 2024

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