NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Ralph Wilson, N.D.

Naturopath in Washington, DC · enumerated 2009.

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

National Provider Identifier

1629210489

Verified

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Registry record

Entity type Individual (Type 1)
Name Dr. Ralph Wilson
Credential N.D.
Sex Male
Practice address Washington, DC, 20016
Phone (202) 320-8665
Enumeration date Mar 25, 2009
Last updated in NPPES Dec 13, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

175F00000X Naturopath Other Service Providers · License ND-130 (HI) Primary

Other identifiers

Identifier Type State Issuer
ND 612 Other WA WASHINGTON STATE
ND-130 Other HI HAWAII
NP0015 Other DC ND LICENSE IN DC: NP0015

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 Ralph Wilson 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 Ralph Wilson?
The National Provider Identifier (NPI) for Ralph Wilson is 1629210489, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-13.