Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander Tu, M.D.

Pediatrics Physician in Newport Beach, CA · enumerated 2007.

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

National Provider Identifier

1851598544

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander Tu

Credential M.D.

Sex Male

Practice address 1401 Avocado Ave, Suite 802, Newport Beach, CA, 92660

Phone (949) 644-0970

Fax (949) 644-0774

Enumeration date Jun 27, 2007

Last updated in NPPES May 3, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D0066190 (MD) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License C55538 (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
014397900	Medicaid	MD	-

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 do I verify Alexander Tu's NPI record?

Cross-check NPI 1851598544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851598544 active?

Yes, as of the latest NPPES snapshot, NPI 1851598544 is active (record last updated 2013-05-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-03.