Specialty Directory
Hematology & Oncology in Orange, CA
Federal CMS data for 13 hematology & oncology providers practicing in Orange, CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
13
Providers
Median industry payments
$29,568
13
Hematology & Oncology Providers
in Orange, CA
$29,568
Median Industry Payments
per provider (2018–2024)
980
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 — they are legal and do not indicate wrongdoing.
Hematology & Oncology includes multiple subspecialties with different practice patterns.
Learn more →
Hematology & Oncology Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| OTIS, STAVROULA M.D. | 121,898 | 2,060 | Iron infusion (Injectafer) | $23,262 (2018-2024) | Food & Beverage (79%) | Very High |
| MUMMANENI, MADHAVI MD | 6,916 | 712 | Denosumab injection (Prolia/Xgeva) | $27,291 (2018-2024) | Food & Beverage (99%) | Very High |
| WONG, JOHN MD | 1,901 | 661 | Office visit, established patient (30-39 min) | $16,237 (2018-2024) | Food & Beverage (90%) | Very High |
| BYUN, TIMOTHY MD | 1,593 | 768 | Office visit, established patient (30-39 min) | $124,705 (2018-2024) | Consulting (56%) | Very High |
| HUANG, SAM M.D. | 1,255 | 532 | Office visit, established patient (30-39 min) | $77,346 (2018-2024) | Consulting (55%) | Very High |
| NAN, XINYU M.D. | 996 | 356 | Office visit, established patient (30-39 min) | $24,879 (2019-2024) | Food & Beverage (93%) | Very High |
| REZAZADEH KALEBASTY, ARASH M.D. | 980 | 264 | Office visit, established patient, complex (40-54 min) | $626,929 (2018-2024) | Consulting (86%) | Very High |
| JEYAKUMAR, DEEPA M.D. | 627 | 103 | Office visit, established patient, complex (40-54 min) | $29,568 (2018-2024) | Consulting (80%) | Very High |
| OU, SAI-HONG I MD | 599 | 221 | Office visit, established patient (30-39 min) | $329,015 (2018-2024) | Consulting (58%) | Very High |
| COOMBS, CATHERINE M.D. | 441 | 137 | Hospital follow-up visit, high complexity | $585,514 (2018-2024) | Consulting (69%) | Very High |
| MEHTA, RITA SANGHVI MD | 377 | 160 | Office visit, established patient, complex (40-54 min) | $19,396 (2018-2024) | Consulting (99%) | Very High |
| LEE, FA-CHYI M.D. | 175 | 113 | Office visit, established patient (30-39 min) | $3,185 (2018-2024) | Consulting (56%) | Very High |
| NAGASAKA, MISAKO MD | 147 | 104 | Office visit, established patient, complex (40-54 min) | $408,912 (2018-2024) | Consulting (51%) | Very High |
Note: Hematology & 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
Hematology & Oncology encompasses multiple practice patterns. Comparing providers within the same pattern provides more meaningful context.
Clinical Cardiology (11)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| WONG, JOHN | 1,901 | $16,237 |
| BYUN, TIMOTHY | 1,593 | $124,705 |
| HUANG, SAM | 1,255 | $77,346 |
| NAN, XINYU | 996 | $24,879 |
| REZAZADEH KALEBASTY, ARASH | 980 | $626,929 |
| JEYAKUMAR, DEEPA | 627 | $29,568 |
| OU, SAI-HONG I | 599 | $329,015 |
| COOMBS, CATHERINE | 441 | $585,514 |
| MEHTA, RITA SANGHVI | 377 | $19,396 |
| LEE, FA-CHYI | 175 | $3,185 |
Mixed Practice (2)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| OTIS, STAVROULA | 121,898 | $23,262 |
| MUMMANENI, MADHAVI | 6,916 | $27,291 |