Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard Jasper Deen

Registered Nurse in Gaithersburg, MD · enumerated 2024.

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

National Provider Identifier

1275356867

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Registry record

Entity type Individual (Type 1)

Name Richard Jasper Deen

Sex Male

Practice address 655 Watkins Mill Rd, Gaithersburg, MD, 20879

Phone (240) 632-4000

Enumeration date Nov 4, 2024

Last updated in NPPES Nov 4, 2024

Taxonomy & licenses

163WX0200X Oncology Registered Nurse Nursing Service Providers · License R244263 (MD) Secondary

163W00000X Registered Nurse Nursing Service Providers · License R244263 (MD) 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 Richard Jasper Deen practice?

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

What is the NPI number for Richard Jasper Deen?

The National Provider Identifier (NPI) for Richard Jasper Deen is 1275356867, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-04.