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MARY DIORIO MSW, LCSW
NPI 1235293689
Social Worker - Clinical in Portland, OR

Active since December 20, 2006Opted out of Medicare · through Aug 12, 2026
421 SW OAK ST, SUITE 520, PORTLAND, OR 97204(503) 988-5464 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Diorio Msw, Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY DIORIO MSW, LCSW (NPI 1235293689) is an individual clinical provider in Portland, Oregon, licensed in Oregon (L3817) and active in the NPI registry since December 2006. She has opted out of Medicare through August 12, 2026.

NPPES Registry Identity

NPI1235293689
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARY DIORIOCredential: MSW, LCSW
Location Address421 SW OAK ST, SUITE 520Portland, OR 97204-1817
Mailing Address421 Sw Oak St, Suite 520Portland, OR 97204-1817 · (503) 988-5464
Phone(503) 988-5464
Sole ProprietorNo
Enumeration DateDecember 20, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1235293689 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in OR · L3817
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X
421 SW OAK ST, Portland, OR 97204
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Mary Diorio Msw, Lcsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from August 12, 2020 through August 12, 2026.

Opt-Out Effective DateAugust 12, 2020
Opt-Out In Effect ThroughAugust 12, 2026Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. LETICIA MARIA SAINZ M.A.
Counselor
421 SW OAK ST, SUITE 520
PORTLAND, OR 97204
Multnomah County (503) 793-3184
MS. NGA YEN LE RDH
Dental Hygienist
421 SW OAK ST, STE. 210
PORTLAND, OR 97204
Multnomah County (503) 988-7468
JOLYNN MARIE THOMPSON PSS
Health Maintenance Organization
421 SW OAK ST
PORTLAND, OR 97204
Multnomah County (503) 988-5464
MS. MICHELLE LORETTA DESAI MSW
Counselor (Mental Health)
421 SW OAK ST, SUITE 520
PORTLAND, OR 97204
Multnomah County (503) 867-4756
DARIAN FINLEY-GARCIA MSW, QMHA
Counselor (Mental Health)
421 SW OAK ST
PORTLAND, OR 97204
Multnomah County (503) 988-4161
DARLINE HILL
Case Manager/Care Coordinator
421 SW OAK ST
PORTLAND, OR 97204
Multnomah County (503) 988-2489
MS. KAREN KAZZ A ARTIS LPC, LCAT
Counselor (Professional)
421 SW OAK ST, SUITE 520
PORTLAND, OR 97204
Multnomah County (503) 988-3999
KERRI AULT MSW
Case Manager/Care Coordinator
421 SW OAK ST, SUITE 520
PORTLAND, OR 97204
Multnomah County (503) 988-5464

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Diorio's NPI number?

The NPI number for Mary Diorio is 1235293689. It was assigned to this individual provider in the NPPES registry on December 20, 2006.

Where is Mary Diorio located?

Mary Diorio practices at 421 SW Oak St Suite 520, Portland, OR 97204. The listed phone number is (503) 988-5464.

What is Mary Diorio's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Mary Diorio enrolled in Medicare?

No. Mary Diorio has opted out of Medicare through August 12, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Mary Diorio accept?

Health plans from PacificSource Health Plans list Mary Diorio as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mary Diorio was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.