NPI Portal NPI Lookup & Verification

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Dr. Sharon Dutton, M.D.

Radiation Oncology Physician in Sunnyvale, CA · enumerated 2005.

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

National Provider Identifier

1871591743

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Registry record

Entity type Individual (Type 1)
Name Dr. Sharon Dutton
Credential M.D.
Sex Female
Practice address 301 Old San Francisco Rd, Sunnyvale, CA, 94086
Enumeration date Jul 13, 2005
Last updated in NPPES Jun 14, 2024

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License G86117 (CA) Primary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 23098 (HI) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Sharon Dutton?
Sharon Dutton is registered in NPPES with the primary taxonomy of Radiation Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-14.