What is Marcus Gross's NPI number?

Marcus Gross's National Provider Identifier (NPI) is 1063206324, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marcus Gross's specialty?

Marcus Gross is listed in the NPPES registry with a primary specialty of Day Training/Habilitation Specialist (Nursing Service Related Providers).

Where is Marcus Gross located?

Marcus Gross's practice location on file with NPPES is 265 S Anita Dr # 102-104, Orange, CA 92868-3355.

What is Marcus Gross's phone number?

The practice phone number listed in the NPPES registry for Marcus Gross is (714) 710-3500.

Is Marcus Gross's NPI active?

Yes — Marcus Gross's NPI (1063206324) is active in the NPPES registry as of the last update on 2025-07-22.

IndividualActive

Marcus Gross

NPI 1063206324 · Day Training/Habilitation Specialist · Orange, CA

Marcus Gross is a Day Training/Habilitation Specialist provider in Orange, CA (NPI 1063206324).

Provider details

NPI number: 1063206324
Entity type: Individual
Primary specialty: Day Training/Habilitation SpecialistNursing Service Related Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Day Training/Habilitation SpecialistPrimary373H00000X
Nursing Service Related Providers

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

265 S Anita Dr # 102-104

Orange, CA 92868-3355

Phone: (714) 710-3500

Street-level locationGet directions

More CA providers

Mailing address