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

Ruth Ann Williamson, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1386264356

Ruth Ann Williamson, PMHNP-BC is a Nurse Practitioner in Massena, New York. Qualified in 2019, 7 years ago. Practices with Citizen Advocates, Inc, a 50-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
7
Licensed in
NY
In the registry since
2020
What do these letters mean?
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

See every abbreviation used in this directory →

Practice location Address checks out

16 Phillips St
Massena, NY 13662-2016
Phone: (315) 764-8076
Show map & directions

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

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence F402952-01 (NY)

Record details

NPI number1386264356
Entity typeIndividual (Type 1)
GenderFemale
Credentials PMHNP-BC
Sole proprietorNo
NPI enumeratedApril 20, 2020
Last updated in NPPESNovember 28, 2023
Certification dateNovember 28, 2023

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Citizen Advocates, Inc — 50 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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