Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John W. Gallo, DO

Internal Medicine Physician in Pittsburg, CA · enumerated 2006 · practices at Pittsburg-Antioch Medical Group A Professional Corporation.

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

National Provider Identifier

1558446229

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Registry record

Entity type Individual (Type 1)

Name John W. Gallo

Credential DO

Sex Male

Practice address 2220 Gladstone Dr, Ste 3, Pittsburg, CA, 94565

Phone (925) 432-3318

Fax (925) 432-4590

Enumeration date Oct 25, 2006

Last updated in NPPES Jul 12, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A7460 (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

Other identifiers

Identifier	Type	State	Issuer
00AX74600	Medicaid	CA	-

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

Is NPI 1558446229 active?

Yes, as of the latest NPPES snapshot, NPI 1558446229 is active (record last updated 2016-07-12).

How do I verify John Gallo's NPI record?

Cross-check NPI 1558446229 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-12.