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

Mary Osing Welch, RN, PMHNP

Individual provider Registered Nurse · NPI 1679724819

Mary Osing Welch, RN, PMHNP is a Nurse Practitioner in Portland, Oregon. Qualified in 2008, 18 years ago. Practices with Cascadia Health, a 62-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
18
Licensed in
OR
In the registry since
2008
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
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

10373 NE Hancock St Ste 200
Portland, OR 97220-3873
Phone: (503) 253-6754
Fax: (503) 253-8020
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8383 Ne Sandy Blvd, Portland, OR 97220-4948 — (503) 253-0964

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 200850133NP (OR)
Registered Nurse Taxonomy 163W00000X · Licence 200642765RN (OR)

Record details

NPI number1679724819
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , PMHNP
Sole proprietorNo
NPI enumeratedOctober 7, 2008
Last updated in NPPESMarch 6, 2026
Certification dateMarch 6, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Cascadia Health — 62 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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