Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Joseph Mayo, PA-C

Q: What is the NPI number for David Mayo?

The National Provider Identifier (NPI) for David Mayo is 1184213522, a Type 1 (individual) record in the CMS NPPES registry.

Medical Physician Assistant in Washington, MO · enumerated 2021.

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

National Provider Identifier

1184213522

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name David Joseph Mayo

Credential PA-C

Sex Male

Practice address 901 E 5th St, Washington, MO, 63090

Phone (636) 239-8000

Enumeration date Jan 11, 2021

Last updated in NPPES Feb 22, 2022

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 2022006233 (MO) 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

What is the NPI number for David Mayo?

The National Provider Identifier (NPI) for David Mayo is 1184213522, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Mayo practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-22.