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

Allissa L Massey, FNP

Individual provider Family Nurse Practitioner · NPI 1790284586

Allissa L Massey, FNP is a Nurse Practitioner in Rochester, New York. Qualified in 2017, 9 years ago. Practices with Wellnow Urgent Care, PC, a 411-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
9
Licensed in
NY
In the registry since
2018
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

1425 Portland Ave
Rochester, NY 14621-3011
Phone: (585) 922-4518
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)

  • 4201 Buffalo Road, North Chili, NY 14514-1256 — (585) 594-5995

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 342493 (NY)

Record details

NPI number1790284586
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedFebruary 7, 2018
Last updated in NPPESApril 15, 2025
Certification dateApril 15, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Wellnow Urgent Care, P.C. — 411 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients18
Services billed 37 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Wellnow Urgent Care, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 411 clinicians in the practice; 12 are shown here.

Other providers in Rochester