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

Dr. Alfonso Ray Loomis, D.M.D.

General Practice Dentistry in Arcadia, CA · enumerated 2006.

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

National Provider Identifier

1356364426

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Registry record

Entity type Individual (Type 1)

Name Dr. Alfonso Ray Loomis

Credential D.M.D.

Sex Male

Practice address Arcadia, CA, 91006

Phone (626) 446-0106

Fax (626) 446-4934

Enumeration date Jul 26, 2006

Last updated in NPPES Dec 18, 2009

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 25740 (CA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

What is the NPI number for Alfonso Loomis?

The National Provider Identifier (NPI) for Alfonso Loomis is 1356364426, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alfonso Loomis practice?

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

Other providers at this practice address

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Robert Wu General Practice Dentistry · Arcadia, CA NPI 1609913722

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-18.