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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MARYELLEN M OLSON LCSW
NPI 1366365967
Social Worker - Clinical in Watsonville, CA

Active since July 31, 2026
67 WINDING WAY, WATSONVILLE, CA 95076(831) 515-9451 Get Directions Write a Review

NPPES record added: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Maryellen M Olson Lcsw NPPES

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

MARYELLEN M OLSON LCSW (NPI 1366365967) is an individual clinical provider in Watsonville, California, licensed in California (137877) and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1366365967
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARYELLEN M OLSONCredential: LCSW
Location Address67 WINDING WAYWatsonville, CA 95076-6206
Mailing Address67 Winding WayWatsonville, CA 95076-6206 · (831) 515-9451
Phone(831) 515-9451
Sole ProprietorYes
Enumeration DateJuly 31, 2026
NPPES CertifiedJuly 31, 2026
✔ NPI 1366365967 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 137877
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.
67 WINDING WAY, Watsonville, CA 95076
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Other Names 1

Other Name (5)Milo E Olson

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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 Maryellen Olson's NPI number?

The NPI number for Maryellen Olson is 1366365967. It was assigned to this individual provider in the NPPES registry on July 31, 2026. The provider is also known as Milo E Olson.

Where is Maryellen Olson located?

Maryellen Olson practices at 67 Winding Way, Watsonville, CA 95076. The listed phone number is (831) 515-9451.

What is Maryellen Olson'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 Maryellen Olson was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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.