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

SIENNA ORANGE KOIZUMI
NPI 1093630741
Student in an Organized Health Care Education/Training Program in Downey, CA

Active since August 12, 2026
9300 IMPERIAL HWY, DOWNEY, CA 90242(562) 922-6111 Get Directions Write a Review

NPPES record added: August 12, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Sienna Orange Koizumi NPPES

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

SIENNA ORANGE KOIZUMI (NPI 1093630741) is an individual student in an organized health care education/training program in Downey, California and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1093630741
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameSIENNA ORANGE KOIZUMI
Location Address9300 IMPERIAL HWYDowney, CA 90242-2813
Mailing Address9300 Imperial HwyDowney, CA 90242-2813
Phone(562) 922-6111
Sole ProprietorNo
Enumeration DateAugust 12, 2026
NPPES CertifiedAugust 12, 2026
✔ NPI 1093630741 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
9300 IMPERIAL HWY, Downey, CA 90242
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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.

MISS CLAUDIA V GONZALEZ
Health and Wellness Coach
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-7488
VERENICE PEREZ-JARAMILLO
Health and Wellness Coach
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-7488
MR. DEVIN PATRICK GAUDE BSW
Health and Wellness Coach
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-7488
JENNA ISABELLA NICHOLS
Student in an Organized Health Care Education/Training Program
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 803-8441
CESAR ALBERTO VARGAS QUINONES
Rehabilitation Practitioner
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-6111
MELANIE REILLY
Health and Wellness Coach
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-7488
MS. EVELYN ISABEL GARCIA LCSW, PPSC
Social Worker (Clinical)
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (310) 956-0444
DANIELLE MARIE SABAS
Student in an Organized Health Care Education/Training Program
9300 IMPERIAL HWY
DOWNEY, CA 90242
Los Angeles County (562) 922-6111

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 Koizumi's NPI number?

The NPI number for Sienna Koizumi is 1093630741. It was assigned to this individual provider in the NPPES registry on August 12, 2026.

Where is Sienna Koizumi located?

Sienna Koizumi practices at 9300 Imperial Hwy, Downey, CA 90242. The listed phone number is (562) 922-6111.

What is Sienna Koizumi's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

When was this NPI record last updated?

The NPPES record for Sienna Koizumi was last updated on August 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.