Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Marc T Fields, MD

Individual provider Radiation Oncology Physician · NPI 1730143066

Dr. Marc T Fields, MD is a Radiation Oncology in Rohnert Park, California. Graduated from University of Missouri, Kansas City, School of Medicine in 1994, 32 years ago. Practices with Cancer Therapy Medical Group Inc, a 13-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
32
Trained at
University of Missouri, Kansas City, School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

301 Professional Center Dr
Rohnert Park, CA 94928-2152
Phone: (209) 543-0684
Fax: (209) 343-3809
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence C52087 (CA)

Record details

NPI number1730143066
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 13, 2006
Last updated in NPPESJuly 19, 2023
Certification dateJuly 19, 2023
Mailing addressPo Box 756, Danville, CA 94526-0756

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Cancer Therapy Medical Group Inc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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