Providers
6
Locations
1
Specialties
4
Insurance Plans
8
About Grass Valley Radiation Oncology
Background and practice information
Grass Valley Radiation Oncology is a mid-sized group medical practice based in Grass Valley, CA, with 6 affiliated healthcare providers.
The practice brings together providers across multiple specialties, including family practice, nurse practitioner, internal medicine, and radiation oncology. Its providers are in-network with 8 insurance plans, though coverage varies by individual provider and should be confirmed before scheduling.
Practice Locations
1 location
Grass Valley Radiation OncologyPrimary
300 SIERRA COLLEGE DR, Grass Valley, CA 959455083
(530) 274-6600
Affiliations
Hospitals where providers at Grass Valley Radiation Oncology hold admitting privileges
Insurance Networks
Accepted insurance plans and networks
Grass Valley Radiation Oncology accepts 48 plans from 8 insurers, including Cigna, UnitedHealthcare, Aetna.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Specialties at Grass Valley Radiation Oncology
Provider specialties represented at this practice
Healthcare Providers
6 providers practice here
Marlowe Dieckmann, MD
Family Practice
Grass Valley, CA
Constance Gaulter, MD
Family Practice
Grass Valley, CA
Mehwish Khan, MD
Internal Medicine · Telehealth
Grass Valley, CA
Mariya Alder, NP
Nurse Practitioner · Telehealth
Grass Valley, CA
Elise Morgan, NP
Nurse Practitioner
Grass Valley, CA
Clayton Hess, MD
Radiation Oncology · Telehealth
Grass Valley, CA
Frequently Asked Questions
Common questions about Grass Valley Radiation Oncology
How many providers are at Grass Valley Radiation Oncology?
Grass Valley Radiation Oncology has 6 affiliated healthcare providers. You can browse the full provider roster, with specialties and locations, on this page.
What specialties does Grass Valley Radiation Oncology offer?
The practice includes providers in family practice, nurse practitioner, internal medicine, and radiation oncology. Use the specialty filter on the provider list to find a specific type of provider.
What insurance does Grass Valley Radiation Oncology accept?
Providers at Grass Valley Radiation Oncology are collectively in-network with 8 insurance plans. Acceptance varies by individual provider, so confirm your specific plan with the office before your visit.
Where is Grass Valley Radiation Oncology located?
Grass Valley Radiation Oncology's primary location is in Grass Valley, CA. See the contact section for the full address and phone number.
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