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

Dr. Jillian Marie Hammes, D.O.

Family Medicine Physician in Colton, CA · enumerated 2012.

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

National Provider Identifier

1457621195

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Registry record

Entity type Individual (Type 1)
Name Dr. Jillian Marie Hammes
Credential D.O.
Sex Female
Practice address Colton, CA, 92324
Phone (909) 580-3370
Enumeration date Jan 11, 2012
Last updated in NPPES Nov 29, 2021

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A12086 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

Where does Jillian Hammes practice?
The practice location on file with NPPES is in Colton, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jillian Hammes?
The National Provider Identifier (NPI) for Jillian Hammes is 1457621195, 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 2021-11-29.