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MR. DAVID LEON MASON JR.
NPI 1558210278
Case Manager/Care Coordinator in Alexandria, VA

Active since January 26, 2026
2685 ARLINGTON DR APT 301, ALEXANDRIA, VA 22306(202) 550-3013 Get Directions Write a Review

NPPES record last updated: February 3, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Feb 3, 2026, Jan 26, 2026 (2 updates tracked since 2026).

About Mr. David Leon Mason Jr. NPPES

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

MR. DAVID LEON MASON JR. (NPI 1558210278) is an individual case manager/care coordinator provider in Alexandria, Virginia and active in the NPI registry since January 2026.

NPPES Registry Identity

NPI1558210278
Entity TypeIndividualMale
Primary Taxonomy171M00000X
Provider Legal NameMR. DAVID LEON MASON JR.
Location Address2685 ARLINGTON DR APT 301Alexandria, VA 22306-3658
Mailing Address2685 Arlington Dr Apt 301Alexandria, VA 22306-3658 · (202) 550-3013
Phone(202) 550-3013
Sole ProprietorYes
Enumeration DateJanuary 26, 2026
Last NPPES UpdateFebruary 3, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 3, 2026
✔ NPI 1558210278 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCase Manager/Care CoordinatorOther Service Providers
Taxonomy Code171M00000X
Definition
A person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other services. The person has the ability to provide an assessment and review of completed plan of care on a periodic basis. This person is also able to take collaborative action to coordinate the services with other providers and monitor the enrollee's progress toward the cost-effective achievement of objectives specified in the plan of care. Credentials may vary from an experience in the fields of psychology, social work, rehabilitation, nursing or a closely related human service field, to a related Assoc of Arts Degree or to nursing credentials. Some states may require certification in case management.
2685 ARLINGTON DR APT 301, Alexandria, VA 22306
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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 David Mason's NPI number?

The NPI number for David Mason is 1558210278. It was assigned to this individual provider in the NPPES registry on January 26, 2026.

Where is David Mason located?

David Mason practices at 2685 Arlington Dr Apt 301, Alexandria, VA 22306. The listed phone number is (202) 550-3013.

What is David Mason's specialty?

The primary specialty registered for this NPI is Case Manager/Care Coordinator with taxonomy code 171M00000X.

When was this NPI record last updated?

The NPPES record for David Mason was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.