SEAN EDWARD STILLWELL RADT I
NPI 1427918762
Counselor - Addiction (Substance Use Disorder) in Oakland, CA

Q: What is Sean Stillwell's NPI number?

The NPI number for Sean Stillwell is 1427918762. It was assigned to this individual provider in the NPPES registry on November 17, 2025.

Q: What is Sean Stillwell's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for Sean Stillwell was last updated on November 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since November 17, 2025

722 WASHINGTON ST, OAKLAND, CA 94607(510) 899-2182 Get Directions Write a Review

NPPES record last updated: November 17, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Sean Edward Stillwell Radt I NPPES

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

SEAN EDWARD STILLWELL RADT I (NPI 1427918762) is an individual addiction (substance use disorder) provider in Oakland, California, licensed in California (RT1418661025) and active in the NPI registry since November 2025.

NPPES Registry Identity

NPI1427918762

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameSEAN EDWARD STILLWELLCredential: RADT I

Location Address722 WASHINGTON STOakland, CA 94607-3925

Mailing Address722 Washington StOakland, CA 94607-3925 · (510) 899-2182

Phone(510) 899-2182

Sole ProprietorYes

Enumeration DateNovember 17, 2025

NPPES CertifiedNovember 17, 2025

✔ NPI 1427918762 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in CA · RT1418661025

722 WASHINGTON ST, Oakland, CA 94607

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Other Providers at the Same Location NPPES

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

GABRIEL RICHARD MALDONADO RADT I

Counselor (Addiction (Substance Use Disorder))

722 WASHINGTON ST
OAKLAND, CA 94607

Alameda County (510) 815-8008

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 Sean Stillwell's NPI number?

The NPI number for Sean Stillwell is 1427918762. It was assigned to this individual provider in the NPPES registry on November 17, 2025.

Where is Sean Stillwell located?

Sean Stillwell practices at 722 Washington St, Oakland, CA 94607. The listed phone number is (510) 899-2182.

What is Sean Stillwell's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Sean Stillwell was last updated on November 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.