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JOHN S MARVIN LCSW
NPI 1336755784
Social Worker - Clinical in Portland, OR

Active since September 21, 2020
1125 SE MADISON ST STE 100E, PORTLAND, OR 97214(503) 597-8237(503) 961-7266 Get Directions Write a Review

NPPES record last updated: March 18, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 18, 2026, Mar 31, 2025, Nov 20, 2024 and 5 more (8 updates tracked since 2020).

About John S Marvin Lcsw NPPES

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

JOHN S MARVIN LCSW (NPI 1336755784) is an individual clinical provider in Portland, Oregon, licensed in Oregon (L30008) and active in the NPI registry since September 2020.

NPPES Registry Identity

NPI1336755784
Entity TypeIndividual
Primary Taxonomy1041C0700X
Provider Legal NameJOHN S MARVINCredential: LCSW
Location Address1125 SE MADISON ST STE 100EPortland, OR 97214-3600
Mailing Address1125 Se Madison St Ste 100ePortland, OR 97214-3600 · (503) 597-8237 · Fax (503) 961-7266
Phone(503) 597-8237
Fax(503) 961-7266
Sole ProprietorNo
Enumeration DateSeptember 21, 2020
Last NPPES UpdateMarch 18, 20268 updates tracked since enumeration
NPPES CertifiedMarch 18, 2026
✔ NPI 1336755784 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in OR · L30008✔ Licensed in WA · SWI.LW.70081228
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.
1125 SE MADISON ST STE 100E, Portland, OR 97214
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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 John Marvin's NPI number?

The NPI number for John Marvin is 1336755784. It was assigned to this individual provider in the NPPES registry on September 21, 2020.

Where is John Marvin located?

John Marvin practices at 1125 SE Madison St Ste 100E, Portland, OR 97214. The listed phone number is (503) 597-8237.

What is John Marvin's specialty?

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

When was this NPI record last updated?

The NPPES record for John Marvin was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.