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

Ms. Gerri Ann Hamilton, RN, COF, CFOM

Orthotic Fitter in Concord, CA · enumerated 2007.

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

National Provider Identifier

1558572123

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Registry record

Entity type Individual (Type 1)

Name Ms. Gerri Ann Hamilton

Credential RN, COF, CFOM

Sex Female

Practice address Concord, CA, 94520

Phone (925) 827-2500

Fax (925) 827-2503

Enumeration date May 25, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

225000000X Orthotic Fitter Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License CFOM0108 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Gerri Hamilton practice?

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

What is the NPI number for Gerri Hamilton?

The National Provider Identifier (NPI) for Gerri Hamilton is 1558572123, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Sharon Gomez Orthotic Fitter · Concord, CA NPI 1891961793

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.