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

Mr. William Larsen, FNP

Individual provider Family Nurse Practitioner · NPI 1124409099

Mr. William Larsen, FNP is a Nurse Practitioner in Ithaca, New York. Qualified in 2015, 11 years ago. Practices with Cayuga Medical Associates PC, a 277-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
11
Licensed in
NY
In the registry since
2015
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

905 Hanshaw Rd
Ithaca, NY 14850-1549
Phone: (607) 339-0670
Fax: (607) 319-5524
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 404 N Cayuga St, Ithaca, NY 14850-4219 — (607) 277-0969

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 339752 (NY)

Record details

NPI number1124409099
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorYes
NPI enumeratedJune 16, 2015
Last updated in NPPESAugust 23, 2022
Certification dateAugust 23, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Cayuga Medical Associates Pc — 277 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Ithaca