What is Simone Gregston's NPI number?

Simone Gregston's National Provider Identifier (NPI) is 1780535245, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Simone Gregston's specialty?

Simone Gregston is listed in the NPPES registry with a primary specialty of Adult Companion (Nursing Service Related Providers).

Where is Simone Gregston located?

Simone Gregston's practice location on file with NPPES is 4820 Business Center Dr Ste 120, Fairfield, CA 94534-1910.

What is Simone Gregston's phone number?

The practice phone number listed in the NPPES registry for Simone Gregston is (707) 399-3830.

Is Simone Gregston's NPI active?

Yes — Simone Gregston's NPI (1780535245) is active in the NPPES registry as of the last update on 2026-02-11.

IndividualActive

Simone Gregston

NPI 1780535245 · Adult Companion · Fairfield, CA

Simone Gregston is a Adult Companion provider in Fairfield, CA (NPI 1780535245).

Provider details

NPI number: 1780535245
Entity type: Individual
Primary specialty: Adult CompanionNursing Service Related Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Adult CompanionPrimary372600000X
Nursing Service Related Providers

Profile Score

Basic profile(47/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

4820 Business Center Dr Ste 120

Fairfield, CA 94534-1910

Phone: (707) 399-3830

Street-level locationGet directions

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Mailing address