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

Ellyn Troisi, NP

Individual provider Family Nurse Practitioner · NPI 1851692578

Ellyn Troisi, NP is a Family Nurse Practitioner in Commack, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2010
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

68 Hauppauge Rd
Commack, NY 11725-4403
Phone: (631) 715-2644
Fax: (631) 715-2767
Show map & directions

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence F336345 (NY)

Record details

NPI number1851692578
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorYes
NPI enumeratedNovember 11, 2010
Last updated in NPPESNovember 11, 2010

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