Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cory Doran Spencer, MD

Hematology & Oncology Physician in Eureka, CA · enumerated 2006 · practices at Eureka Internal Medicine.

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

National Provider Identifier

1578669149

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Registry record

Entity type Individual (Type 1)

Name Dr. Cory Doran Spencer

Credential MD

Sex Male

Practice address 2280 Harrison Ave, Suite B, Eureka, CA, 95501

Phone (707) 443-9371

Enumeration date Sep 14, 2006

Last updated in NPPES Jun 22, 2010

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G71456 (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
00G714560	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.

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Frequently asked questions

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.

What specialty is Cory Spencer?

Cory Spencer 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.

Other providers at this practice address

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Igor Abolnik Infectious Disease Physician · Rureka, CA NPI 1194783829 Adriena Kajdos Gastroenterology Physician · Eureka, CA NPI 1699725325 Nancy Van Speybroeck Rheumatology Physician · Eureka, CA NPI 1720184393 Eureka Internal Medicine Internal Medicine Physician · Eureka, CA NPI 1093810814 Nanette Medin Adult Health Nurse Practitioner · Eureka, CA NPI 1629173216 Uzi Selcer Infectious Disease Physician · Eureka, CA NPI 1689770257 John Irvine Internal Medicine Physician · Eureka, CA NPI 1861598419 Bruce Kessler Internal Medicine Physician · Eureka, CA NPI 1811093461

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-22.