Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Antonio C. Arrieta, M.D.

Pediatric Infectious Diseases Physician in Orange, CA · enumerated 2006.

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

National Provider Identifier

1861599748

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Antonio C. Arrieta

Credential M.D.

Sex Male

Practice address 455 S Main St, Psf Infectious Disease, Orange, CA, 92868

Phone (714) 532-8403

Fax (714) 289-4014

Enumeration date Sep 20, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2080P0208X Pediatric Infectious Diseases Physician Allopathic & Osteopathic Physicians · License A46432 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00A464320	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

How do I verify Antonio Arrieta's NPI record?

Cross-check NPI 1861599748 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861599748 active?

Yes, as of the latest NPPES snapshot, NPI 1861599748 is active (record last updated 2007-07-08).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.