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Ian Churchill Anderson, M.D.

Hematology & Oncology Physician in Santa Rosa, CA · enumerated 2006.

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

National Provider Identifier

1518055573

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Registry record

Entity type Individual (Type 1)
Name Ian Churchill Anderson
Credential M.D.
Sex Male
Practice address 3555 Round Barn Cir, Santa Rosa, CA, 95403
Phone (707) 528-1050
Enumeration date Oct 11, 2006
Last updated in NPPES Oct 14, 2021

Taxonomy & licenses

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A49481 (CA) Secondary
207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License A49481 (CA) Secondary
207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License A49481 (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
00A494810 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

Where does Ian Anderson practice?
The practice location on file with NPPES is in Santa Rosa, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ian Anderson?
The National Provider Identifier (NPI) for Ian Anderson is 1518055573, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-14.