What is Sierra Garthwaite's NPI number?

Sierra Garthwaite's National Provider Identifier (NPI) is 1780037010, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sierra Garthwaite's specialty?

Sierra Garthwaite is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Sierra Garthwaite located?

Sierra Garthwaite's practice location on file with NPPES is 1500 Franklin St, San Francisco, CA 94109-4523.

What is Sierra Garthwaite's phone number?

The practice phone number listed in the NPPES registry for Sierra Garthwaite is (415) 474-7310.

Is Sierra Garthwaite's NPI active?

Yes — Sierra Garthwaite's NPI (1780037010) is active in the NPPES registry as of the last update on 2025-05-23.

IndividualActive

Sierra Garthwaite

NPI 1780037010 · Psychologist · San Francisco, CA

Sierra Garthwaite is a Psychologist provider in San Francisco, CA (NPI 1780037010).

Provider details

NPI number: 1780037010
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No
License: 35751 (CA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 35751 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(71/100 index)

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

Registry tenure38% of score
9 yrs in NPPES registry
Profile completeness38% of score
100% 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

1500 Franklin St

San Francisco, CA 94109-4523

Phone: (415) 474-7310

Street-level locationGet directions

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Mailing address