What is Marcia Williams's NPI number?

Marcia Williams's National Provider Identifier (NPI) is 1255291365, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Marcia Williams's specialty?

Marcia Williams is listed in the NPPES registry with a primary specialty of Home Health Aide (Nursing Service Related Providers).

Where is Marcia Williams located?

Marcia Williams's practice location on file with NPPES is 599 50th St Ne Apt 233, Washington, DC 20019-5460.

What is Marcia Williams's phone number?

The practice phone number listed in the NPPES registry for Marcia Williams is (202) 520-2783.

Is Marcia Williams's NPI active?

Yes — Marcia Williams's NPI (1255291365) is active in the NPPES registry as of the last update on 2025-11-12.

IndividualActive

Marcia Williams

NPI 1255291365 · Home Health Aide · Washington, DC

Marcia Williams is a Home Health Aide provider in Washington, DC (NPI 1255291365).

Provider details

NPI number: 1255291365
Entity type: Individual
Primary specialty: Home Health AideNursing Service Related Providers
Sex: Female
Sole proprietor: No
License: 1709698 (DC)

Specialties & taxonomies

Home Health AidePrimary374U00000XLicense 1709698 (DC)
Nursing Service Related Providers

Profile Score

Established profile(53/100 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
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

599 50th St Ne Apt 233

Washington, DC 20019-5460

Phone: (202) 520-2783

Street-level locationGet directions

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Mailing address