What is Justine Underhill's NPI number?

Justine Underhill's National Provider Identifier (NPI) is 1942377957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Justine Underhill's specialty?

Justine Underhill is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Justine Underhill located?

Justine Underhill's practice location on file with NPPES is 1001 Potrero Ave # 6b, San Francisco, CA 94110-3518.

What is Justine Underhill's phone number?

The practice phone number listed in the NPPES registry for Justine Underhill is (628) 206-4444.

Is Justine Underhill's NPI active?

Yes — Justine Underhill's NPI (1942377957) is active in the NPPES registry as of the last update on 2021-08-18.

IndividualActive

Justine Underhill, LCSW

NPI 1942377957 · Clinical Social Worker · San Francisco, CA

Justine Underhill, LCSW is a Clinical Social Worker provider in San Francisco, CA (NPI 1942377957).

Provider details

NPI number: 1942377957
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LCSW
Sex: Female
Sole proprietor: No
License: LCSW 24079 (CA)

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense LCSW 24079 (CA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(99/100 index)

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

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
3 documented practice locations

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

1001 Potrero Ave # 6b

San Francisco, CA 94110-3518

Phone: (628) 206-4444

Street-level locationGet directions

More CA providers

Mailing address

46 Delano Ave

San Francisco, CA 94112-2520

Additional practice locations (2)

401 Parnassus Ave
Box Cas-0984
San Francisco, CA 94143-2211
Phone: (415) 476-7222
1100 Sanchez St
San Francisco, CA 94114-3825
Phone: (415) 672-4700

Enumerated: 2006-11-29
Last updated: 2021-08-18
Certified: 2021-08-18

Frequently asked questions

What is Justine Underhill's NPI number?: Justine Underhill's National Provider Identifier (NPI) is 1942377957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Justine Underhill's specialty?: Justine Underhill is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Justine Underhill located?: Justine Underhill's practice location on file with NPPES is 1001 Potrero Ave # 6b, San Francisco, CA 94110-3518.
What is Justine Underhill's phone number?: The practice phone number listed in the NPPES registry for Justine Underhill is (628) 206-4444.
Is Justine Underhill's NPI active?: Yes — Justine Underhill's NPI (1942377957) is active in the NPPES registry as of the last update on 2021-08-18.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.