Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Eleonor Tan Quan, M.D.

Hematology & Oncology Physician in Huntington Beach, CA · enumerated 2006.

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

National Provider Identifier

1770502254

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Registry record

Entity type Individual (Type 1)

Name Dr. Eleonor Tan Quan

Credential M.D.

Sex Female

Practice address 19582 Beach Blvd, #212, Huntington Beach, CA, 92648

Phone (714) 252-9415

Fax (714) 963-8407

Enumeration date Jul 18, 2006

Last updated in NPPES Apr 29, 2025

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 19307 (ND) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License A53257 (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
00A532570	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

What specialty is Eleonor Quan?

Eleonor Quan is registered in NPPES with the primary taxonomy of Hematology & Oncology 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 2025-04-29.