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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gordon S. Appelbaum, M.D.

Emergency Medicine Physician in Oceanside, CA · enumerated 2006.

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

National Provider Identifier

1245200674

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Registry record

Entity type Individual (Type 1)
Name Gordon S. Appelbaum
Credential M.D.
Sex Male
Practice address 4171 Oceanside Blvd, Oceanside, CA, 92056
Phone (760) 216-6253
Enumeration date Jan 26, 2006
Last updated in NPPES Dec 20, 2024

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 35.064031 (OH) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License MD8036 (HI) Secondary
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License G069453 (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
PENDING Medicaid OH -

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

What specialty is Gordon Appelbaum?
Gordon Appelbaum is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-20.