Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Williams

Contractor in San Diego, CA · enumerated 2017.

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

National Provider Identifier

1992231633

Verified

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Registry record

Entity type Individual (Type 1)

Name Michael Williams

Sex Male

Practice address 8590 Production Ave, Suite B, San Diego, CA, 92121

Phone (866) 632-2823

Fax (866) 463-8141

Enumeration date May 1, 2017

Last updated in NPPES May 1, 2017

Taxonomy & licenses

171W00000X Contractor Other Service Providers · License 986938 (CA) Primary

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 Michael Williams practice?

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

What is the NPI number for Michael Williams?

The National Provider Identifier (NPI) for Michael Williams is 1992231633, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-05-01.