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SIENNA MAUVE GREGAN AMFT
NPI 1639648520
Counselor - Mental Health in Oakland, CA

Active since November 20, 2018
2501 HARRISON ST, OAKLAND, CA 94612(415) 870-6968 Get Directions Write a Review

NPPES record last updated: November 20, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Sienna Mauve Gregan Amft NPPES

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

SIENNA MAUVE GREGAN AMFT (NPI 1639648520) is an individual mental health provider in Oakland, California, licensed in California (103588) and active in the NPI registry since November 2018.

NPPES Registry Identity

NPI1639648520
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameSIENNA MAUVE GREGANCredential: AMFT
Location Address2501 HARRISON STOakland, CA 94612-3811
Mailing Address2501 Harrison StOakland, CA 94612-3811 · (415) 870-6968
Phone(415) 870-6968
Sole ProprietorNo
Enumeration DateNovember 20, 2018
✔ NPI 1639648520 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 CA · 103588
2501 HARRISON ST, Oakland, CA 94612
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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.

MIRIAM MUNZAROVA
Marriage & Family Therapist
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
NICOLETTE NGUYEN
Counselor
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
JAMIE ZUROMSKI
Student in an Organized Health Care Education/Training Program
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
OAKLAND COUNSELING CENTER
Case Management
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
TAMAR ALTMAN AMFT
Marriage & Family Therapist
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 788-0876
JAMIE LYN FIELDS
Student in an Organized Health Care Education/Training Program
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
AMY MANSFIELD WEINBERG
Counselor (Professional)
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344
BONNIJEAN HENRY
Psychologist (Group Psychotherapy)
2501 HARRISON ST
OAKLAND, CA 94612
Alameda County (510) 444-3344

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 Sienna Gregan's NPI number?

The NPI number for Sienna Gregan is 1639648520. It was assigned to this individual provider in the NPPES registry on November 20, 2018.

Where is Sienna Gregan located?

Sienna Gregan practices at 2501 Harrison St, Oakland, CA 94612. The listed phone number is (415) 870-6968.

What is Sienna Gregan'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 Sienna Gregan was last updated on November 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.