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MR. MASSIE ANDRE AVANT JR. RS
NPI 1174833818
Counselor - Addiction (Substance Use Disorder) in Riverside, CA

Active since October 15, 2010
4440 UNIVERSITY AVE, RIVERSIDE, CA 92501(951) 683-6596 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mr. Massie Andre Avant Jr. Rs NPPES

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

MR. MASSIE ANDRE AVANT JR. RS (NPI 1174833818) is an individual addiction (substance use disorder) provider in Riverside, California, licensed in California (RS6036) and active in the NPI registry since October 2010.

NPPES Registry Identity

NPI1174833818
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. MASSIE ANDRE AVANT JR.Credential: RS
Location Address4440 UNIVERSITY AVERiverside, CA 92501-3199
Mailing Address5870 Arlington AveRiverside, CA 92504-2037 · (951) 683-6596
Phone(951) 683-6596
Sole ProprietorYes
Enumeration DateOctober 15, 2010
Last NPPES UpdateSeptember 23, 2025
NPPES CertifiedSeptember 23, 2025
✔ NPI 1174833818 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 · RS6036
4440 UNIVERSITY AVE, Riverside, CA 92501
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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.

SELESTE LOZANO
Counselor (Professional)
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
SAMANTHA ROSE DURO RADT1
Counselor (Addiction (Substance Use Disorder))
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
DARLENE ANN KORTA RADT 1
Counselor (Addiction (Substance Use Disorder))
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
MARCO ANTONIO IBARRA MEDINA
Counselor (Addiction (Substance Use Disorder))
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
GENEVIEVE GRADILLA LVN
Licensed Vocational Nurse
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
EVERTH JOSE CHAMORRO ACSW
Social Worker (Clinical)
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596
MR. WILLIAM JOSEPH PATE RADT-I
Counselor (Addiction (Substance Use Disorder))
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 505-0312
DAVID JOSHUA PENTECOST
Counselor
4440 UNIVERSITY AVE
RIVERSIDE, CA 92501
Riverside County (951) 683-6596

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 Massie Avant's NPI number?

The NPI number for Massie Avant is 1174833818. It was assigned to this individual provider in the NPPES registry on October 15, 2010.

Where is Massie Avant located?

Massie Avant practices at 4440 University Ave, Riverside, CA 92501. The listed phone number is (951) 683-6596.

What is Massie Avant'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 Massie Avant was last updated on September 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.