Doctor profile · Federal record
Dr. Marc Fields, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Rohnert Park, CA
- NPI 1730143066
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
301 Professional Center Dr
Rohnert Park, CA 949282152
(209) 543-0684
fax (209) 343-3809 - Mailing address
-
Po Box 756
Danville, CA 945260756
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- July 19, 2023
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- California #C52087
- Medicaid
- CA #00C520870
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1730143066. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
12
Distinct HCPCS
1
Medicare allowed
$3,831
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77280 |
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 12 | 12 | $319 |
In context: peer comparison
Among 3 peers in Rohnert Park Radiation Oncology Physician, average services per provider: 20. This provider delivers 0.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
19
Patients
0
Total drug cost
$360
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Lidocaine Hcl Viscous (Lidocaine Hcl) | Brand | 19 | 0 | $360 |
Frequently asked questions
What is Dr. Marc Fields's medical specialty?
Dr. Marc Fields practices Radiation Oncology Physician in Rohnert Park, CA.
Where does Dr. Marc Fields practice?
Dr. Marc Fields practices at 301 Professional Center Dr, Rohnert Park, CA 949282152. Office phone: 2095430684.
What is Dr. Marc Fields's NPI?
Dr. Marc Fields's National Provider Identifier (NPI) is 1730143066, issued by NPPES.
Does Dr. Marc Fields accept Medicare assignment?
Yes. Dr. Marc Fields accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marc Fields commonly perform?
Top Medicare-reported procedures in 2023: Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (HCPCS 77280). Source: CMS Medicare Physician & Other Practitioners file.