What is Sarah Lum's NPI number?

Sarah Lum's National Provider Identifier (NPI) is 1891522710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sarah Lum's specialty?

Sarah Lum is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Sarah Lum located?

Sarah Lum's practice location on file with NPPES is 50 Acacia Ave, San Rafael, CA 94901-2230.

What is Sarah Lum's phone number?

The practice phone number listed in the NPPES registry for Sarah Lum is (415) 457-4440.

Is Sarah Lum's NPI active?

Yes — Sarah Lum's NPI (1891522710) is active in the NPPES registry as of the last update on 2026-02-03.

IndividualActive

Sarah Lum

NPI 1891522710 · Physician Assistant · San Rafael, CA

Sarah Lum is a Physician Assistant provider in San Rafael, CA (NPI 1891522710).

Provider details

NPI number: 1891522710
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Physician AssistantPrimary363A00000X
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Basic profile(49/100 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

50 Acacia Ave

San Rafael, CA 94901-2230

Phone: (415) 457-4440

Street-level locationGet directions

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Mailing address