Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Marie Washington, LICSW, LCSW-C

Clinical Social Worker in Washington, DC · enumerated 2017.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1912416256

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Katherine Marie Washington

Credential LICSW, LCSW-C

Sex Female

Practice address 770 M St Se, Washington, DC, 20003

Phone (202) 547-3870

Enumeration date Sep 28, 2017

Last updated in NPPES Sep 28, 2017

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LC50079491 (DC) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Katherine Washington's NPI record?

Cross-check NPI 1912416256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1912416256 active?

Yes, as of the latest NPPES snapshot, NPI 1912416256 is active (record last updated 2017-09-28).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-28.