Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Warren H Fong MD Inc

Hematology & Oncology Physician in Newport Beach, CA · enumerated 2005 · authorized official Warren Fong, President.

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

National Provider Identifier

1841274602

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Registry record

Entity type Organization (Type 2)

Legal business name Warren H Fong MD Inc

Practice address 361 Hospital Rd, Ste 530, Newport Beach, CA, 92663

Phone (949) 574-1610

Fax (949) 574-1613

Enumeration date Dec 5, 2005

Last updated in NPPES Jul 26, 2010

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Warren Fong

Title President

Phone (949) 574-1610

Other identifiers

Identifier	Type	State	Issuer
WG78726A	Other	CA	MEDICARE INDIVIDUAL PTAN

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

Where is Warren H Fong MD Inc located?

The practice location on file with NPPES is in Newport Beach, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-07-26. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-26.