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Grass Valley Radiation Oncology

Radiation Oncology Physician in Grass Valley, CA · enumerated 2020 · authorized official Clayton Hess, Owner.

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

National Provider Identifier

1649895194

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Registry record

Entity type Organization (Type 2)
Legal business name Grass Valley Radiation Oncology
Practice address 300 Sierra College Dr Ste 150, Grass Valley, CA, 95945
Phone (530) 802-6400
Enumeration date Jun 10, 2020
Last updated in NPPES Apr 29, 2026

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Clayton Hess
Title Owner
Phone (678) 733-5626

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 is Grass Valley Radiation Oncology located?
The practice location on file with NPPES is in Grass Valley, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-04-29. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-29.