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

Gwendolyn Marie Hamilton, RADT1

Substance Abuse Rehabilitation Facility in San Diego, CA · enumerated 2019 · practices at The Way Back.

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

National Provider Identifier

1790241180

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Registry record

Entity type Individual (Type 1)

Name Gwendolyn Marie Hamilton

Credential RADT1

Sex Female

Practice address San Diego, CA, 92102

Phone (619) 235-0592

Enumeration date Feb 11, 2019

Last updated in NPPES Feb 11, 2019

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

Taxonomy & licenses

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities Primary

Other identifiers

Identifier	Type	State	Issuer
324500000X	Other	CA	THE WAY BACK

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

What is the NPI number for Gwendolyn Hamilton?

The National Provider Identifier (NPI) for Gwendolyn Hamilton is 1790241180, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gwendolyn Hamilton practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-11.