Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alden Clark

Q: What is the NPI number for Alden Clark?

The National Provider Identifier (NPI) for Alden Clark is 1215626957, a Type 1 (individual) record in the CMS NPPES registry.

Physician Assistant in Washington, DC · enumerated 2023.

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

National Provider Identifier

1215626957

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Registry record

Entity type Individual (Type 1)

Name Alden Clark

Sex Female

Practice address 3800 Reservoir Rd Nw, Washington, DC, 20007

Phone (202) 444-4972

Fax (202) 444-7333

Enumeration date May 8, 2023

Last updated in NPPES Mar 4, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA200002204 (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

Where does Alden Clark practice?

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

What is the NPI number for Alden Clark?

The National Provider Identifier (NPI) for Alden Clark is 1215626957, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-04.