Specialty Directory
Hematology & Oncology in Los Angeles, CA
Federal CMS data for 52 hematology & oncology providers practicing in Los Angeles, CA. Includes Medicare utilization, Open Payments industry funding, and PECOS enrollment status.
52
Providers
Median industry payments
$15,986
52
Hematology & Oncology Providers
in Los Angeles, CA
$15,986
Median Industry Payments
per provider (2018–2024)
3,330
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.
Hematology & Oncology includes multiple subspecialties with different practice patterns.
Learn more →
Showing top 50 of 52 providers, ranked by Medicare service volume.
Hematology & Oncology Providers
NPPES · Open Payments · Medicare| Provider | Medicare Volume | Beneficiaries* | Top Procedure | Industry Payments | Payment Type | Coverage |
|---|---|---|---|---|---|---|
| SLOMOWITZ, SAMUEL M.D. | 271,084 | — | Darbepoetin injection (Aranesp) for anemia | $681 (2018-2024) | — | Very High |
| NASSIR, YOURAM MD | 246,348 | — | Oxaliplatin chemotherapy injection | $24,611 (2018-2024) | — | Very High |
| ESHAGHIAN, SHAHROOZ M.D. | 161,825 | — | Iron infusion (Injectafer) | $19,817 (2018-2024) | — | Very High |
| SHARMA, SANJAI MD | 139,314 | — | Iron infusion (Injectafer) | $25,458 (2018-2024) | — | Very High |
| KLEYNBERG, LEONID M.D. | 109,520 | — | Filgrastim injection, 1 microgram | $13,681 (2018-2024) | — | Very High |
| CHMIELOWSKI, BARTOSZ MD, PHD | 65,931 | — | Nivolumab injection (Opdivo) | $67,733 (2018-2024) | — | Very High |
| WONG, DEBORAH M.D., PH.D. | 62,795 | — | Pembrolizumab injection (Keytruda) | $38,387 (2018-2024) | — | Very High |
| VESCIO, ROBERT M.D. | 53,192 | — | Daratumumab injection (Darzalex) | $1,134,645 (2018-2024) | — | Very High |
| CHIU, VI M.D., PH.D. | 51,270 | — | Oxaliplatin chemotherapy injection | $776 (2022-2024) | — | Very High |
| LARSON, SARAH M.D. | 39,278 | — | Daratumumab injection (Darzalex) | $14,683 (2018-2024) | — | Very High |
| PIRO, LAWRENCE M.D. | 34,099 | — | Testosterone injection | $13,758 (2018-2023) | — | Very High |
| CHUANG, FUKAI M.D. | 30,352 | — | Iron infusion (Feraheme) | $217 (2018-2024) | — | Very High |
| OLIAI, CASPIAN M.D. | 27,726 | — | Iron infusion (Feraheme) | $1,563 (2018-2024) | — | Very High |
| SENEVIRATNE, LASIKA M.D. | 27,644 | — | Filgrastim injection (Zarxio) for white blood cells | $131,803 (2018-2024) | — | Very High |
| GLASPY, JOHN MD | 21,655 | — | Pembrolizumab injection (Keytruda) | $126,466 (2018-2024) | — | Very High |
| GRUSSIE, ERWIN | 20,481 | — | Denosumab injection (Prolia/Xgeva) | $1,899 (2018-2024) | — | Very High |
| RIBAS, ANTONI MD | 14,751 | — | Pembrolizumab injection (Keytruda) | $368,585 (2018-2024) | — | Very High |
| KLEYNBERG, ROMAN M.D. | 12,849 | — | Hospital follow-up visit, moderate complexity | $7,776 (2018-2024) | — | Very High |
| HO, JASON M.D. | 11,965 | — | Denosumab injection (Prolia/Xgeva) | $41,628 (2018-2024) | — | Very High |
| DE VOS, SVEN MD | 10,482 | — | Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg | $27,026 (2018-2024) | — | Very High |
| ORR, LEO M.D. | 6,669 | — | Denosumab injection (Prolia/Xgeva) | $16,377 (2018-2024) | — | Very High |
| HAHN, CLAN M.D. | 6,093 | — | Office visit, established patient (30-39 min) | $8,039 (2018-2024) | — | Very High |
| ZHANG, HAO M.D. | 6,060 | — | Injection, granisetron hydrochloride, 100 mcg | $36,339 (2018-2024) | — | Very High |
| BERZ, DAVID MD, PHD, MPH | 5,643 | — | Anti-nausea injection (ondansetron/Zofran) | $479,367 (2018-2024) | — | Very High |
| GRANT, ELLSWORTH M.D | 3,643 | — | Anti-nausea injection (ondansetron/Zofran) | $20,711 (2018-2024) | — | Very High |
| KROLOFF, MAXWELL M.D. | 3,527 | — | Anti-nausea injection (ondansetron/Zofran) | $305 (2018-2023) | — | Very High |
| AL-JAZAYRLY, GHASSAN M.D. | 3,133 | — | Hospital follow-up visit, moderate complexity | $2,440 (2018-2024) | — | Very High |
| HU, JOHN M.D. | 3,044 | — | Complete blood count (CBC) with differential | $15,263 (2018-2024) | — | Very High |
| KIM, SEONG MD | 2,506 | — | Dexamethasone injection (steroid) | $13,910 (2018-2024) | — | Very High |
| ROKHSAR, SEPEHR M.D. | 2,464 | — | Office visit, established patient (30-39 min) | $114,041 (2018-2024) | — | Very High |
| KYUNG, SUNGWON M.D. | 2,209 | — | Office visit, established patient (30-39 min) | $19,766 (2018-2024) | — | Very High |
| SCHILLER, GARY MD | 1,550 | — | Office visit, established patient (20-29 min) | $283,219 (2018-2024) | — | Very High |
| STERRENBERG, DANIELLE M.D. | 1,200 | — | Office visit, established patient (30-39 min) | $153,994 (2018-2024) | — | Very High |
| GARON, EDWARD MD | 991 | — | Hospital follow-up visit, moderate complexity | $211,357 (2018-2024) | — | Very High |
| STOLL, SIDNEY D.O. | 929 | — | Office visit, established patient, complex (40-54 min) | $12,941 (2018-2024) | — | Very High |
| KLEYNBERG, VERA M.D. | 828 | — | Office visit, established patient (30-39 min) | $11,357 (2018-2024) | — | Very High |
| PAQUETTE, RONALD MD | 800 | — | Hospital follow-up visit, moderate complexity | $16,503 (2018-2024) | — | Very High |
| SADEGHI, SARMAD MD, MS, PHD | 715 | — | Office visit, established patient (20-29 min) | $10,075 (2018-2024) | — | Very High |
| MILLER, BECKY M.D. | 710 | — | Office visit, established patient (30-39 min) | $4,453 (2018-2023) | — | Very High |
| OVEISI, DAVID MD | 643 | — | Hospital follow-up visit, high complexity | $21,558 (2019-2024) | — | Very High |
| HAFEZ, NAVID M.D. | 630 | — | Office visit, established patient, complex (40-54 min) | $11,391 (2019-2024) | — | Very High |
| KELLY, KEVIN M.D. | 619 | — | Hospital follow-up visit, moderate complexity | $956,349 (2018-2024) | — | Very High |
| ZHOU, JENNY M.D. | 586 | — | Office visit, established patient (30-39 min) | $2,603 (2018-2023) | — | Very High |
| MILES, STEVEN M.D. | 580 | — | Critical care, first 30-74 min | $6,048 (2018-2024) | — | Very High |
| D'SOUZA, ANISHKA M.D. | 567 | — | Office visit, established patient (30-39 min) | $5,780 (2018-2024) | — | Very High |
| O'CONNELL, CASEY M.D. | 551 | — | Office visit, established patient (20-29 min) | $15,595 (2018-2024) | — | Very High |
| THOMAS, JACOB | 529 | — | Office visit, established patient (30-39 min) | $5,024 (2018-2024) | — | Very High |
| NIEVA, JORGE M.D. | 523 | — | Office visit, established patient (30-39 min) | $50,874 (2018-2024) | — | Very High |
| IN, GINO MD | 516 | — | Office visit, established patient, complex (40-54 min) | $76,066 (2018-2024) | — | Very High |
| MYINT, ZAW M.D. | 418 | — | Hospital follow-up visit, moderate complexity | $446 (2018-2024) | — | 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.
Mixed Practice (26)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| SLOMOWITZ, SAMUEL | 271,084 | $681 |
| NASSIR, YOURAM | 246,348 | $24,611 |
| ESHAGHIAN, SHAHROOZ | 161,825 | $19,817 |
| SHARMA, SANJAI | 139,314 | $25,458 |
| KLEYNBERG, LEONID | 109,520 | $13,681 |
| CHMIELOWSKI, BARTOSZ | 65,931 | $67,733 |
| WONG, DEBORAH | 62,795 | $38,387 |
| VESCIO, ROBERT | 53,192 | $1,134,645 |
| CHIU, VI | 51,270 | $776 |
| LARSON, SARAH | 39,278 | $14,683 |
Clinical Cardiology (24)
| Provider | Medicare Volume | Industry Payments |
|---|---|---|
| HAHN, CLAN | 6,093 | $8,039 |
| KROLOFF, MAXWELL | 3,527 | $305 |
| HU, JOHN | 3,044 | $15,263 |
| KIM, SEONG | 2,506 | $13,910 |
| ROKHSAR, SEPEHR | 2,464 | $114,041 |
| KYUNG, SUNGWON | 2,209 | $19,766 |
| SCHILLER, GARY | 1,550 | $283,219 |
| STERRENBERG, DANIELLE | 1,200 | $153,994 |
| GARON, EDWARD | 991 | $211,357 |
| STOLL, SIDNEY | 929 | $12,941 |