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ASHLEY MELISSA SULLIVAN
NPI 1689540320
Counselor - Addiction (Substance Use Disorder) in Antioch, CA

Active since October 10, 2025
1915 D ST, ANTIOCH, CA 94509(925) 754-3673(925) 754-2002 Get Directions Write a Review

NPPES record last updated: October 10, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ashley Melissa Sullivan NPPES

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

ASHLEY MELISSA SULLIVAN (NPI 1689540320) is an individual addiction (substance use disorder) provider in Antioch, California and active in the NPI registry since October 2025.

NPPES Registry Identity

NPI1689540320
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameASHLEY MELISSA SULLIVAN
Location Address1915 D STAntioch, CA 94509-2571
Mailing Address1915 D StAntioch, CA 94509-2571 · (925) 754-3673 · Fax (925) 754-2002
Phone(925) 754-3673
Fax(925) 754-2002
Sole ProprietorNo
Enumeration DateOctober 10, 2025
NPPES CertifiedOctober 10, 2025
✔ NPI 1689540320 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
1915 D ST, Antioch, CA 94509
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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.

ISABELLA MURPHY
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
MS. CHRISTY CLARK
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
ROBIN BROWN
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
MS. RACHELLE PIERSON
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
REBECCA KARSTE
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
MR. JOSE MAURILIO AVELAR
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
MS. IGNACIA PRECIADO
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673
NICK RODRIGUEZ
Counselor (Addiction (Substance Use Disorder))
1915 D ST
ANTIOCH, CA 94509
Contra Costa County (925) 754-3673

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 Ashley Sullivan's NPI number?

The NPI number for Ashley Sullivan is 1689540320. It was assigned to this individual provider in the NPPES registry on October 10, 2025.

Where is Ashley Sullivan located?

Ashley Sullivan practices at 1915 D St, Antioch, CA 94509. The listed phone number is (925) 754-3673.

What is Ashley Sullivan'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 Ashley Sullivan was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.