Doctor profile · Federal record
Dr. James Mason, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Wildomar, CA
- NPI 1902955818
- Accepts Medicare
- MIPS 91.9 / 100 · 2023
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
36450 Inland Valley Dr
Wildomar, CA 925959583
(951) 696-0679
fax (951) 696-9748 - Additional location
-
6939 Palm CT
Riverside, CA 925062815
(951) 683-6771
fax (951) 683-7450 - Mailing address
-
Po Box 512185
Los Angeles, CA 900510185
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- November 13, 2020
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- California #G85713
- Medicaid
- OH #0961188
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1902955818. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,270
Distinct HCPCS
10
Medicare allowed
$301,627
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77014 |
Ct guidance for insertion of radiation therapy fields | 512 | 34 | $127 | |
G6015 |
Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session | 406 | 25 | $388 | |
77336 |
Continuing radiation therapy consultation per week | 100 | 26 | $92 | |
77427 |
Radiation treatment management, 5 treatment sessions | 96 | 25 | $197 | |
77300 |
Calculation of radiation therapy dose | 54 | 18 | $69 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 39 | 32 | $94 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 17 | 15 | $489 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 16 | 16 | $226 | |
77263 |
Complex radiation therapy planning | 15 | 15 | $173 | |
77301 |
High precision radiation therapy planning | 15 | 15 | $1,959 |
In context: peer comparison
Among 2 peers in Wildomar Radiation Oncology Physician, average services per provider: 113. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
68
Patients
14
Total drug cost
$594
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 34 | 0 | $357 |
| Tamsulosin Hcl | Generic | 34 | 14 | $237 |
Frequently asked questions
What is Dr. James Mason's medical specialty?
Dr. James Mason practices Radiation Oncology Physician in Wildomar, CA.
Where does Dr. James Mason practice?
Dr. James Mason practices at 36450 Inland Valley Dr, Wildomar, CA 925959583. Office phone: 9516960679.
What is Dr. James Mason's NPI?
Dr. James Mason's National Provider Identifier (NPI) is 1902955818, issued by NPPES.
Does Dr. James Mason accept Medicare assignment?
Yes. Dr. James Mason accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James Mason commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc (HCPCS G6015); Continuing radiation therapy consultation per week (HCPCS 77336). Source: CMS Medicare Physician & Other Practitioners file.