Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Anthony N. Demeo, MD, Inc.

Allergy Physician in Walnut Creek, CA · enumerated 2007 · authorized official Anthony Demeo, Owner.

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

National Provider Identifier

1316162605

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Registry record

Entity type Organization (Type 2)

Legal business name Anthony N. Demeo, MD, Inc.

Practice address 1844 San Miguel Dr, Suite 305, Walnut Creek, CA, 94596

Phone (925) 939-3437

Fax (925) 939-7814

Enumeration date Apr 13, 2007

Last updated in NPPES Nov 29, 2012

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License G21979 (CA) Primary

207RA0201X Allergy & Immunology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License G21979 (CA) Secondary

Authorized official

Name Anthony Demeo

Title Owner

Phone (925) 939-3437

Other identifiers

Identifier	Type	State	Issuer
00G219790	Medicaid	CA	-
S99Y6	Other	CA	EMPIRE BC BS

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-11-29. Verify at npiregistry.cms.hhs.gov.

Where is Anthony N. Demeo, MD, Inc. located?

The practice location on file with NPPES is in Walnut Creek, CA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-29.