Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Williams

Case Manager/Care Coordinator in Riverdale, MD · enumerated 2025.

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

National Provider Identifier

1073305207

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mary Williams

Sex Female

Practice address 5605 Longfellow St Apt 103, Riverdale, MD, 20737

Phone (646) 291-9858

Fax (646) 291-9858

Enumeration date May 22, 2025

Last updated in NPPES May 22, 2025

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers 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

Where does Mary Williams practice?

The practice location on file with NPPES is in Riverdale, MD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mary Williams?

The National Provider Identifier (NPI) for Mary Williams is 1073305207, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-22.