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

MR. MARK DIAZ
NPI 1457270464
Adult Companion in Rancho Cucamonga, CA

Active since July 13, 2026
13631 JEREMY CT, RANCHO CUCAMONGA, CA 91739(909) 803-0601 Get Directions Write a Review

NPPES record added: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. Mark Diaz NPPES

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

MR. MARK DIAZ (NPI 1457270464) is an individual adult companion provider in Rancho Cucamonga, California and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1457270464
Entity TypeIndividualMale
Primary Taxonomy372600000X
Provider Legal NameMR. MARK DIAZ
Location Address13631 JEREMY CTRancho Cucamonga, CA 91739-2031
Mailing Address13631 Jeremy CtRancho Cucamonga, CA 91739-2031 · (909) 803-0601
Phone(909) 803-0601
Sole ProprietorNo
Enumeration DateJuly 13, 2026
NPPES CertifiedJuly 13, 2026
✔ NPI 1457270464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAdult CompanionNursing Service Related Providers
Taxonomy Code372600000X
Definition
An individual who provides supervision, socialization, and non-medical care to a functionally impaired adult. Companions may assist or supervise the individual with such tasks as meal preparation, laundry and shopping, but do not perform these activities as discrete services. These services are provided in accordance with a therapeutic goal in the plan of care.
13631 JEREMY CT, Rancho Cucamonga, CA 91739
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Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KIRSHAWN S SNYDER
Social Worker
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 904-3802
RAYLENE JAMIE AREVALO
Marriage & Family Therapist
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601
DIGNITY COMMUNITY SUPPORT SERVICES
Residential Treatment Facility, Emotionally Disturbed Children
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601
MR. RUBEN MIRANDA
Social Worker
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601
NOAH MORALES
Behavior Technician
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601
ARIEL M. JULIAN AMFT
Day Training/Habilitation Specialist
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601
CINTHIA ENRIQUEZ
Day Training/Habilitation Specialist
13631 JEREMY CT
RANCHO CUCAMONGA, CA 91739
San Bernardino County (909) 803-0601

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 Diaz's NPI number?

The NPI number for Mark Diaz is 1457270464. It was assigned to this individual provider in the NPPES registry on July 13, 2026.

Where is Mark Diaz located?

Mark Diaz practices at 13631 Jeremy Ct, Rancho Cucamonga, CA 91739. The listed phone number is (909) 803-0601.

What is Mark Diaz's specialty?

The primary specialty registered for this NPI is Adult Companion with taxonomy code 372600000X.

When was this NPI record last updated?

The NPPES record for Mark Diaz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 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.