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

Helen Day, NP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1225854987

Helen Day, NP is a Psychiatric/Mental Health Nurse Practitioner in Cambridge, Massachusetts. Licensed in Massachusetts and New York. Registered with an NPI since 2024.

Licensed in
MA, NY
In the registry since
2024
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

163 Gore St
Cambridge, MA 02141-1119
Phone: (617) 575-5850
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence RN10036091 (MA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 406533 (NY)

Record details

NPI number1225854987
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedNovember 27, 2024
Last updated in NPPESFebruary 16, 2026
Certification dateFebruary 16, 2026
Mailing address163 Gore St, Cambridge, MA 02141-1119

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