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

MICHAEL RAFAEL SIERRA
NPI 1912813411
Day Training/Habilitation Specialist in Oakland, CA

Active since August 24, 2026
390 40TH ST, OAKLAND, CA 94609(510) 613-0330 Get Directions Write a Review

NPPES record added: August 24, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

About Michael Rafael Sierra NPPES

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

MICHAEL RAFAEL SIERRA (NPI 1912813411) is an individual day training/habilitation specialist in Oakland, California and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1912813411
Entity TypeIndividualMale
Primary Taxonomy373H00000X
Provider Legal NameMICHAEL RAFAEL SIERRA
Location Address390 40TH STOakland, CA 94609-2633
Mailing Address390 40th StOakland, CA 94609-2633 · (510) 613-0330
Phone(510) 613-0330
Sole ProprietorNo
Enumeration DateAugust 24, 2026
NPPES CertifiedAugust 24, 2026
✔ NPI 1912813411 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDay Training/Habilitation SpecialistNursing Service Related Providers
Taxonomy Code373H00000X
Definition
Individuals experienced or trained in working with developmentally disabled individuals who need assistance in acquiring and maintaining life skills that enable them to cope more effectively with the demands of independent living.
390 40TH ST, Oakland, CA 94609
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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.

THUYMINH NGUYEN
Marriage & Family Therapist
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 653-5040
NOAH MERL
Social Worker
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 653-5040
VIRGIL GABA BAGAOISAN
Counselor (Addiction (Substance Use Disorder))
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 306-5361
DANIELLE CHRISJAN STAUFFER
Social Worker (Clinical)
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 723-1907
KIMBERLY ESPINOZA
Peer Specialist
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 613-0330
AUJANAE JACKSON
Peer Specialist
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 613-0330
KIMBERLY JANE GATLIN
Adult Companion
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 613-0330
SHALIMAR FAYEZ BOULOS LCSW, MSW, MPH
Social Worker (Clinical)
390 40TH ST
OAKLAND, CA 94609
Alameda County (510) 613-0330

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 Michael Sierra's NPI number?

The NPI number for Michael Sierra is 1912813411. It was assigned to this individual provider in the NPPES registry on August 24, 2026.

Where is Michael Sierra located?

Michael Sierra practices at 390 40th St, Oakland, CA 94609. The listed phone number is (510) 613-0330.

What is Michael Sierra's specialty?

The primary specialty registered for this NPI is Day Training/Habilitation Specialist with taxonomy code 373H00000X.

When was this NPI record last updated?

The NPPES record for Michael Sierra was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.