Specialty Directory
Radiation Oncology in Walnut Creek, CA
Federal CMS data for 23 radiation oncology providers practicing in Walnut Creek, CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
23
Providers
Median industry payments
$215
23
Radiation Oncology Providers
in Walnut Creek, CA
$215
Median Industry Payments
per provider (2018–2024)
8,043
Median Medicare Services
fee-for-service claims
How to read this directory: Providers are listed by Medicare service volume, which reflects only
Medicare fee-for-service patients (typically 65+). This does not represent total practice volume.
Industry payments span multiple years and payment types; disclosure alone establishes neither wrongdoing nor legality.
Radiation Oncology includes multiple subspecialties with different practice patterns.
Learn more →
Radiation Oncology Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| LIPSON, SCOTT MD | 61,622 | — | MRI contrast dye injection (gadobutrol) | $532 (2018-2023) | — | Very High |
| CHANG, RUBY M.D. | 33,162 | — | MRI contrast dye injection (gadoterate) | $121 (2019-2024) | — | Very High |
| GONZALES, PATRICK M.D. | 31,158 | — | Contrast dye for imaging (iodine-based) | $2,074 (2018-2024) | — | Very High |
| GANDHI, SUNIL M.D. | 30,462 | — | MRI contrast dye injection (gadobutrol) | $14 (2018-2018) | — | Very High |
| DOVICHI, ERIC M.D. | 17,707 | — | Contrast dye for imaging (iodine-based) | $142 (2023-2024) | — | Very High |
| NOURI, KEYVAN M.D. | 12,476 | — | Contrast dye for imaging (iodine-based) | $13 (2019-2019) | — | Very High |
| CHAN, RONALD M.D. | 11,702 | — | MRI contrast dye injection (gadobutrol) | $50 (2018-2018) | — | Very High |
| MERSOL, JOSEPH MD | 9,378 | — | Contrast dye for imaging (iodine-based) | $433 (2019-2024) | — | Very High |
| FUNG, YING M.D. | 9,166 | — | MRI contrast dye injection (gadobutrol) | $35 (2018-2019) | — | Very High |
| GAENSLER, ERIK MD | 8,630 | — | MRI contrast dye injection (gadobutrol) | $61,142 (2018-2024) | — | Very High |
| WOO, DAVID M.D. | 8,473 | — | MRI contrast dye injection (gadobutrol) | $5,604 (2018-2024) | — | Very High |
| POSIN, JONATHAN M.D. | 8,043 | — | Chest X-ray, 1 view | $215 (2019-2019) | — | Very High |
| TU, MARK M.D. | 6,320 | — | Screening mammography | $41 (2024-2024) | — | Very High |
| GAMBHIR, SANGEETA M.D. | 6,066 | — | MRI contrast dye injection (gadobutrol) | $113 (2018-2019) | — | Very High |
| PATEL, SAURABH M.D. | 4,709 | — | MRI contrast dye injection (gadobutrol) | $15 (2023-2023) | — | Very High |
| MURPHY, USHA CHUNDRU M.D. | 4,127 | — | MRI contrast dye injection (gadobutrol) | $126 (2024-2024) | — | Very High |
| CHA, SUSAN M.D. | 3,518 | — | CT scan of chest with contrast | $2,496 (2018-2024) | — | Very High |
| LEE, CHRISTOPHER MD | 3,337 | — | Chest X-ray, 1 view | $969 (2018-2024) | — | Very High |
| HONG, RICHARD M.D. | 2,598 | — | Chest X-ray, 1 view | $8,596 (2018-2024) | — | Very High |
| YOUM, JIWON M.D. | 2,290 | — | Chest X-ray, 1 view | $936 (2022-2024) | — | Very High |
| CHAFEN, LESS M.D. | 2,020 | — | Screening mammography | $22 (2018-2018) | — | Very High |
| KIM, DANIEL M.D. | 1,460 | — | Chest X-ray, 1 view | $1,430 (2018-2024) | — | Very High |
| FINCH, IRA M.D. | 387 | — | Sedation by physician, initial 15 minutes | $6,531 (2018-2024) | — | Very High |
Note: Radiation Oncology encompasses multiple subspecialties with different practice patterns.
Differences in payment amounts and procedure volumes may reflect subspecialty focus
rather than practice quality. Consider viewing individual profiles for full context.
By Practice Pattern
Radiation Oncology encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Mixed Practice (22)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| LIPSON, SCOTT | 61,622 | $532 |
| CHANG, RUBY | 33,162 | $121 |
| GONZALES, PATRICK | 31,158 | $2,074 |
| GANDHI, SUNIL | 30,462 | $14 |
| DOVICHI, ERIC | 17,707 | $142 |
| NOURI, KEYVAN | 12,476 | $13 |
| CHAN, RONALD | 11,702 | $50 |
| MERSOL, JOSEPH | 9,378 | $433 |
| FUNG, YING | 9,166 | $35 |
| GAENSLER, ERIK | 8,630 | $61,142 |
Cardiac Imaging (1)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| CHA, SUSAN | 3,518 | $2,496 |