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

MARK THOMAS NIXON JR.
NPI 1265339162
Counselor - Addiction (Substance Use Disorder) in Downey, CA

Active since October 22, 2026
11500 PARAMOUNT BLVD, DOWNEY, CA 90241(562) 923-4545 Get Directions Write a Review

NPPES record added: October 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mark Thomas Nixon Jr. NPPES

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

MARK THOMAS NIXON JR. (NPI 1265339162) is an individual addiction (substance use disorder) provider in Downey, California, licensed in California (27174) and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1265339162
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMARK THOMAS NIXON JR.
Location Address11500 PARAMOUNT BLVDDowney, CA 90241-4530
Mailing Address7157 Cole StDowney, CA 90242-2010 · (562) 367-5253
Phone(562) 923-4545
Sole ProprietorYes
Enumeration DateOctober 22, 2026
NPPES CertifiedOctober 22, 2026
✔ NPI 1265339162 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 · 27174
11500 PARAMOUNT BLVD, Downey, CA 90241
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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.

RUBY L CAMPOS
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
NICOLE KEYSHAWN RANDOLPH
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (310) 350-5397
MRS. NELLY SALAZAR
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD, LIVING WITH HOPE DEPT.
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
ROSALBA RAYGOZA
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
ANG'ELLLE JILLIANE ALLOWAY
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
CLAUDIA MARINA RAMOS
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
MS. CORRINE NICHELLE ALANIS
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545
JANICE RAMOS AOD
Counselor (Addiction (Substance Use Disorder))
11500 PARAMOUNT BLVD
DOWNEY, CA 90241
Los Angeles County (562) 923-4545

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 Mark Nixon's NPI number?

The NPI number for Mark Nixon is 1265339162. It was assigned to this individual provider in the NPPES registry on October 22, 2026.

Where is Mark Nixon located?

Mark Nixon practices at 11500 Paramount Blvd, Downey, CA 90241. The listed phone number is (562) 923-4545.

What is Mark Nixon'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 Mark Nixon was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.