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
Mailing address68 Hauppauge Rd, Commack, NY 11725-4403

Other providers in Commack