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

MS. Katharine Walser, PMHNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1023849320

MS. Katharine Walser, PMHNP is a Nurse Practitioner in Oswego, New York. Graduated from State University of Ny Upstate Medical University in 2022, 4 years ago. Practices with Oswego Hospital, a 59-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
4
Trained at
State University of Ny Upstate Medical University
Licensed in
CA, NY
In the registry since
2024
Specialties on file
2
What do these letters mean?
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

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Practice location Address checks out

29 E Cayuga St
Oswego, NY 13126-1241
Phone: (315) 326-4100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 163WP0808X (NY)
Psychiatric/Mental Health Registered Nurse Taxonomy 163WP0808X · Licence 95380920 (CA)

Record details

NPI number1023849320
Entity typeIndividual (Type 1)
GenderFemale
Credentials PMHNP
Sole proprietorNo
NPI enumeratedAugust 9, 2024
Last updated in NPPESJune 18, 2026
Certification dateJune 18, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 2022 (4 years in practice)
Group practice Oswego Hospital — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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