MR. MARK ALEXANDER WILLIAMS
NPI 1639983000
Technician - Personal Care Attendant in Washington, DC

Q: What is Mark Williams's NPI number?

The NPI number for Mark Williams is 1639983000. It was assigned to this individual provider in the NPPES registry on February 5, 2025.

Q: What is Mark Williams's specialty?

The primary specialty registered for this NPI is Technician, specializing in Personal Care Attendant, with taxonomy code 3747P1801X.

Q: When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on February 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 05, 2025

524 KENYON ST NW APT 22, WASHINGTON, DC 20010(240) 354-6286 Get Directions Write a Review

NPPES record last updated: February 5, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

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About Mr. Mark Alexander Williams NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. MARK ALEXANDER WILLIAMS (NPI 1639983000) is an individual personal care attendant in Washington, District Of Columbia and active in the NPI registry since February 2025.

NPPES Registry Identity

NPI1639983000

Entity TypeIndividualMale

Primary Taxonomy3747P1801X

Provider Legal NameMR. MARK ALEXANDER WILLIAMS

Location Address524 KENYON ST NW APT 22Washington, DC 20010-2923

Mailing Address62 53rd Pl SeWashington, DC 20019-6532 · (240) 354-6286

Phone(240) 354-6286

Sole ProprietorYes

Enumeration DateFebruary 5, 2025

NPPES CertifiedFebruary 5, 2025

✔ NPI 1639983000 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyTechnician · Personal Care AttendantNursing Service Related Providers

Taxonomy Code3747P1801X

Definition

An individual who provides assistance with eating, bathing, dressing, personal hygiene, activities of daily living as specified in the plan of care. Services which are incidental to the care furnished, or essential to the health and welfare of the individual may also be provided. Personal care providers must meet state defined training and certification standards

524 KENYON ST NW APT 22, Washington, DC 20010

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Williams's NPI number?

The NPI number for Mark Williams is 1639983000. It was assigned to this individual provider in the NPPES registry on February 5, 2025.

Where is Mark Williams located?

Mark Williams practices at 524 Kenyon St NW Apt 22, Washington, DC 20010. The listed phone number is (240) 354-6286.

What is Mark Williams's specialty?

The primary specialty registered for this NPI is Technician, specializing in Personal Care Attendant, with taxonomy code 3747P1801X.

When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on February 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.