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

STEPHANIE ADLER SEIDEN
NPI 1851220669
Counselor - Mental Health in Longmont, CO

Q: What is Stephanie Seiden's NPI number?

The NPI number for Stephanie Seiden is 1851220669. It was assigned to this individual provider in the NPPES registry on May 18, 2026.

Q: What is Stephanie Seiden's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for Stephanie Seiden was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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 May 18, 2026

1119 4TH AVE APT 1, LONGMONT, CO 80501(617) 686-3278 Get Directions Write a Review

NPPES record added: May 18, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Stephanie Adler Seiden NPPES

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

STEPHANIE ADLER SEIDEN (NPI 1851220669) is an individual mental health provider in Longmont, Colorado, licensed in Colorado (LPCC.0022127) and active in the NPI registry since May 2026.

NPPES Registry Identity

NPI1851220669

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameSTEPHANIE ADLER SEIDEN

Location Address1119 4TH AVE APT 1Longmont, CO 80501-5350

Mailing Address100 Woodruff Ave Apt 1nBrooklyn, NY 11226-1282 · (617) 686-3278

Phone(617) 686-3278

Sole ProprietorYes

Enumeration DateMay 18, 2026

NPPES CertifiedMay 18, 2026

✔ NPI 1851220669 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in CO · LPCC.0022127

1119 4TH AVE APT 1, Longmont, CO 80501

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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 Stephanie Seiden's NPI number?

The NPI number for Stephanie Seiden is 1851220669. It was assigned to this individual provider in the NPPES registry on May 18, 2026.

Where is Stephanie Seiden located?

Stephanie Seiden practices at 1119 4th Ave Apt 1, Longmont, CO 80501. The listed phone number is (617) 686-3278.

What is Stephanie Seiden's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Stephanie Seiden was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.