Medicare Enrolled
Dr. Lasika Seneviratne, M.D.
Hematology & Oncology · Los Angeles, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Seneviratne from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Seneviratne?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Seneviratne
Dr. Lasika Seneviratne is a hematology & oncology specialist in Los Angeles, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Seneviratne performed 27,644 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Seneviratne received a total of $131,803 from 99 pharmaceutical and/or device companies across 1484 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Seneviratne is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years of NPI registration
▲ Top 21% volume in CA
$131,803 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗27,644
Medicare services
Top 21% in CA for hematology & oncology
Not available
Unique patients (not deduplicated)
$12
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Filgrastim injection (Zarxio) for white blood cells An injection of the biosimilar medication filgrastim-sndz (Zarxio) with a dosage of 1 microgram. |
9,704 | $0 | $1 |
| Denosumab injection (Prolia/Xgeva) | 3,812 | $18 | $70 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
3,640 | $0 | $0 |
| Iron infusion (Monoferric) | 1,600 | $16 | $63 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
1,128 | $103 | $422 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
937 | $8 | $25 |
| Injection, heparin sodium, (heparin lock flush), per 10 units | 920 | $0 | $0 |
| Anti-nausea injection (ondansetron/Zofran) | 869 | $0 | $0 |
| Anti-nausea injection (Aloxi/palonosetron) | 566 | $1 | $3 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
539 | $12 | $48 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
532 | $10 | $34 |
| Normal saline infusion, 500 ml Administration of sterile normal saline solution through an intravenous line. This procedure involves the infusion of a 500 ml unit of the solution. |
456 | $1 | $4 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
347 | $65 | $278 |
| Assessment of emotional or behavioral problems An evaluation to identify and understand emotional or behavioral issues. This process involves reviewing symptoms and behaviors to determine the nature of the concerns. |
337 | $4 | $17 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
321 | $8 | $16 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
310 | $25 | $102 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
247 | $29 | $115 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
245 | $1 | $2 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
239 | $117 | $469 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
208 | $57 | $228 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
116 | $1 | $4 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
113 | $11 | $44 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
107 | $59 | $228 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
97 | $5 | $20 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
70 | $16 | $71 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
53 | $33 | $133 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
51 | $66 | $242 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
40 | $137 | $590 |
| New patient office visit, complex (60-74 min) | 23 | $175 | $718 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
17 | $145 | $588 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
11.7% high complexity
74.4% medium
13.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$131,803
Total received (2018-2024)
Avg $18,829/year across 7 years
Top 7% in CA for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
99
Companies
1,484
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$11,451
2023
$11,652
2022
$12,971
2021
$3,960
2020
$14,588
2019
$45,814
2018
$31,368
Payments by company (2024)
Novartis Pharmaceuticals Corporation
$7,615
AstraZeneca Pharmaceuticals LP
$309
Incyte Corporation
$252
Daiichi Sankyo Inc.
$252
Amgen Inc.
$232
Celgene Corporation
$225
ABBVIE INC.
$196
E.R. Squibb & Sons, L.L.C.
$190
Merck Sharp & Dohme LLC
$190
ShockWave Medical, Inc
$165
Astellas Pharma US Inc
$155
PFIZER INC.
$153
ARRAY BIOPHARMA INC
$135
Takeda Pharmaceuticals U.S.A., Inc.
$126
Kite Pharma, Inc.
$122
Gilead Sciences, Inc.
$120
Janssen Biotech, Inc.
$100
GENZYME CORPORATION
$99
Karyopharm Therapeutics Inc.
$98
Genentech USA, Inc.
$85
Boehringer Ingelheim Pharmaceuticals, Inc.
$77
Deciphera Pharmaceuticals Inc.
$73
GlaxoSmithKline, LLC.
$57
EMD Serono, Inc.
$46
SOBI, INC
$43
PUMA BIOTECHNOLOGY, INC.
$34
JAZZ PHARMACEUTICALS INC.
$31
TerSera Therapeutics LLC
$31
Aveo Pharmaceuticals, Inc.
$30
Blueprint Medicines Corporation
$26
Coherus Biosciences Inc.
$22
Ipsen Biopharmaceuticals, Inc
$22
ImmunoGen, Inc.
$22
Mirati Therapeutics, Inc.
$21
Alexion Pharmaceuticals, Inc.
$20
Rigel Pharmaceuticals, Inc.
$19
SpringWorks Therapeutics, Inc.
$17
Bayer Healthcare Pharmaceuticals Inc.
$16
Cumberland Pharmaceuticals, Inc.
$15
Emmaus Medical, Inc.
$12
Top 3 companies account for 71.4% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$63,856
NOVARTIS PHARMACEUTICALS CORPORATION
$14,300
Gilead Sciences, Inc.
$5,688
AstraZeneca Pharmaceuticals LP
$5,568
Daiichi Sankyo Inc.
$5,226
Amgen Inc.
$5,182
Genentech USA, Inc.
$5,020
G1 Therapeutics, Inc.
$2,520
Verastem, Inc.
$1,728
E.R. Squibb & Sons, L.L.C.
$1,652
PFIZER INC.
$1,429
Puma Biotechnology, Inc.
$1,340
Incyte Corporation
$1,235
Celgene Corporation
$1,129
Janssen Biotech, Inc.
$1,101
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,029
GENZYME CORPORATION
$956
F. Hoffmann-La Roche AG
$679
Seagen Inc.
$678
Takeda Pharmaceuticals U.S.A., Inc.
$668
Bayer HealthCare Pharmaceuticals Inc.
$641
Karyopharm Therapeutics Inc.
$562
Exelixis Inc.
$534
Astellas Pharma US Inc
$453
GlaxoSmithKline, LLC.
$433
Pharmacyclics LLC, An AbbVie Company
$427
Merck Sharp & Dohme LLC
$416
Alexion Pharmaceuticals, Inc.
$415
Merck Sharp & Dohme Corporation
$378
Kite Pharma, Inc.
$372
Lilly USA, LLC
$365
ARRAY BIOPHARMA INC
$312
Blueprint Medicines Corporation
$237
Seattle Genetics, Inc.
$225
Teva Pharmaceuticals USA, Inc.
$221
PUMA BIOTECHNOLOGY, INC.
$197
ABBVIE INC.
$196
TESARO, Inc.
$185
Clovis Oncology, Inc.
$184
Heron Therapeutics, Inc.
$182
TOLMAR Pharmaceuticals, Inc.
$175
Foundation Medicine, Inc.
$168
EMD Serono, Inc.
$167
Taiho Oncology, Inc.
$166
ShockWave Medical, Inc
$165
Dova Pharmaceuticals
$158
Janssen Scientific Affairs, LLC
$145
Rigel Pharmaceuticals, Inc.
$137
MorphoSys, US Inc.
$131
Avanir Pharmaceuticals, Inc.
$125
Eisai Inc.
$122
Deciphera Pharmaceuticals Inc.
$117
PharmaEssentia USA Corporation
$116
EISAI INC.
$115
Ipsen Biopharmaceuticals, Inc
$100
Inari Medical, Inc.
$100
Kyowa Kirin, Inc.
$100
JAZZ PHARMACEUTICALS INC.
$93
INSYS Therapeutics Inc
$93
Myovant Sciences Inc.
$89
Coherus Biosciences Inc.
$88
Sumitomo Pharma America, Inc.
$80
Spectrum Pharmaceuticals Inc.
$77
Apellis Pharmaceuticals, Inc.
$59
TerSera Therapeutics LLC
$48
ImmunoGen, Inc.
$48
EUSA Pharma (US) LLC
$45
Global Blood Therapeutics, Inc.
$45
Mirati Therapeutics, Inc.
$44
SOBI, INC
$43
BeiGene USA, Inc.
$40
Genentech, Inc.
$38
MEDIVATION FIELD SOLUTIONS LLC
$37
Chiesi USA, Inc.
$37
Stemline Therapeutics Inc.
$37
Helsinn Therapeutics (U.S.), Inc.
$35
AVEO Pharmaceuticals, Inc.
$33
Shire North American Group Inc
$32
Genmab U.S., Inc.
$31
Aveo Pharmaceuticals, Inc.
$30
Pharmacyclics LLC, an AbbVie Company
$30
Cumberland Pharmaceuticals, Inc.
$29
TAIHO ONCOLOGY, INC.
$27
AMAG Pharmaceuticals, Inc.
$25
Immunomedics, Inc.
$25
Agios Pharmaceuticals, Inc.
$24
Pharmacosmos Therapeutics Inc.
$22
Roche Molecular Systems, Inc.
$22
Acrotech Biopharma LLC
$19
Secura Bio, Inc.
$18
SpringWorks Therapeutics, Inc.
$17
Sun Pharmaceutical Industries Inc.
$17
AbbVie, Inc.
$16
Bayer Healthcare Pharmaceuticals Inc.
$16
Organon LLC
$16
Sirtex Medical Inc
$14
Mylan Institutional Inc.
$13
Advanced Accelerator Applications
$13
Emmaus Medical, Inc.
$12
Top 3 companies account for 63.6% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AFINITOR · AKYNZEO · ALIMTA · ALUNBRIG · AUGTYRO · AYVAKIT · Alecensa · Aliqopa · Avastin · BAVENCIO · BENDEKA · BESREMI · BLENREP · BOSULIF · BRAFTOVI · BRUKINSA · Balversa · Bavencio · Blincyto · CABLIVI · CABOMETYX · CALQUENCE · CARVYKTI · CEREZYME · CINVANTI · COSELA · CT THROMBECTOMY SYSTEM KIT · CYRAMZA · Cabometyx · Copiktra · DARZALEX · DIAGNOSTICS INFORMATION SYSTEMS · DOPTELET · Doptelet · ELAHERE · ELIGARD · ELIQUIS · ELITEK · EMPLICITI · EPKINLY · ERBITUX · ERLEADA · EVENITY · Elahere · Empaveli · Endari · Enhertu · Epkinly · Erleada · FARESTON · FASLODEX · FERAHEME · FERRIPROX · FOLOTYN · FOTIVDA · FOUNDATIONONE · FOUNDATIONONE CDX · FRUZAQLA · Fabhalta · Farydak · Folotyn · GAVRETO · GAZYVA · GILOTRIF · Halaven · IBRANCE · ICLUSIG · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · INREBIC · Imbruvica · Inrebic · JAKAFI · JEMPERLI · JEVTANA · KANJINTI · KEYTRUDA · KISQALI · KRAZATI · Kadcyla · Kyprolis · LONSURF · LOQTORZI · LUMAKRAS · LUTATHERA · LYNPARZA · Lenvima · Lonsurf · Lutathera · MEKINIST · MONJUVI · MONOFERRIC · MVASI · NERLYNX · NINLARO · NUEDEXTA · Nerlynx · Neulasta · Nexavar · Nplate · Nubeqa · OGSIVEO · OJJAARA · ONTRUZANT · ONUREG · OPDIVO · OPDUALAG · ORGOVYX · OXBRYTA · Ogivri · Onivyde · Orserdu · PADCEV · PEMAZYRE · PIQRAY · PLUVICTO · POLIVY · POTELIGEO · PROMACTA · Padcev · Perjeta · Phesgo · Pomalyst · Prolia · QINLOCK · QUZYTTIR · REBLOZYL · RYBREVANT · Revlimid · Rezlidhia · Rubraca · SANCUSO · SARCLISA · SCEMBLIX · SIR-Spheres Microspheres · SOLIRIS · SOMATULINE DEPOT · SPRYCEL · SUSTOL · SUTENT · SYNDROS · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Somatuline Depot · Stivarga · Sylvant · TABRECTA · TAGRISSO · TASIGNA · TECENTRIQ · TECVAYLI · TIBSOVO · TIVDAK · TUKYSA · Tavalisse · Trodelvy · ULTOMIRIS · Udenyca · Ultomiris · VENCLEXTA · VERZENIO · VOTRIENT · VPRIV · Vectibix · Venclexta · Vitrakvi · Vyloy · XALKORI · XGEVA · XOSPATA · XPOVIO · XTANDI · Xospata · Xtandi · YONSA · Yescarta · ZEJULA · ZEPZELCA · Zoladex
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Hematology & oncology specialists in nearby ZIP areas
406
County median income
$87,760
Nearest hospital to ZIP centroid (approximate)
PIH HEALTH GOOD SAMARITAN HOSPITAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Seneviratne is a mixed practice specialist, with above-average Medicare volume (top 21% in CA), with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Seneviratne experienced with filgrastim injection (zarxio) for white blood cells?
Based on Medicare claims data, Dr. Seneviratne performed 9,704 filgrastim injection (zarxio) for white blood cells services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Seneviratne receive payments from pharmaceutical companies?
Yes. Dr. Seneviratne received a total of $131,803 from 99 companies across 1,484 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Seneviratne's costs compare to other hematology & oncology specialists in Los Angeles?
Dr. Seneviratne's average Medicare payment per service is $12. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Seneviratne) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
Explore related providers
Same specialty & city
Hematology & Oncology Specialists in Los Angeles
Browse hematology & oncology specialists in Los Angeles ranked by procedure volume and transparency data.
Highest volume
Top Hematology & Oncology Specialists in CA
Hematology & oncology specialists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Hematology & Oncology Specialists in CA
Which CA hematology & oncology specialists receive the most from drug and device companies.
By company
Novartis Pharmaceuticals Corporation Payments to Doctors
See all physicians who received payments from Novartis Pharmaceuticals Corporation.
By company
NOVARTIS PHARMACEUTICALS CORPORATION Payments to Doctors
See all physicians who received payments from NOVARTIS PHARMACEUTICALS CORPORATION.
By company
Gilead Sciences, Inc. Payments to Doctors
See all physicians who received payments from Gilead Sciences, Inc.
About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology