Medicare Enrolled
Dr. Evelena Ontiveros, MD PHD
Hematology & Oncology · Decatur, IL
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. Ontiveros 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. Ontiveros?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Ontiveros
Dr. Evelena Ontiveros is a hematology & oncology specialist in Decatur, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Ontiveros performed 83,529 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Ontiveros received a total of $5,778 from 46 pharmaceutical and/or device companies across 357 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. Ontiveros 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.
✓ 19 years of NPI registration
▲ Top 13% volume in IL
$5,778 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗83,529
Medicare services
Top 13% in IL for hematology & oncology
Not available
Unique patients (not deduplicated)
$4
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 |
|---|---|---|---|
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
48,000 | $1 | $4 |
| Iron sucrose injection (Venofer) An injection of iron sucrose used to replenish iron levels in the body. |
14,575 | $0 | $1 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
11,350 | $0 | $3 |
| 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. |
1,059 | $90 | $200 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
1,012 | $0 | $0 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
825 | $8 | $24 |
| Manual white blood cell count A laboratory test that involves examining a sample under a microscope to manually count the number of white blood cells present. |
624 | $4 | $27 |
| Complete blood count (CBC), automated An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood. |
624 | $6 | $43 |
| Anti-nausea injection (Aloxi/palonosetron) | 600 | $1 | $28 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
472 | $10 | $73 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
468 | $11 | $75 |
| Iron level test | 344 | $6 | $55 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
344 | $9 | $76 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
308 | $13 | $127 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
172 | $95 | $504 |
| 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. |
157 | $8 | $47 |
| 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. |
154 | $10 | $55 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
142 | $1 | $2 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
138 | $9 | $82 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
130 | $66 | $124 |
| Red blood cell concentration measurement A laboratory test that measures the concentration of red blood cells in the blood. |
121 | $2 | $22 |
| Hemoglobin blood test A blood test that measures the amount of hemoglobin, the protein in red blood cells that carries oxygen. |
121 | $2 | $22 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
120 | $6 | $156 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
116 | $8 | $60 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
113 | $27 | $150 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
107 | $7 | $56 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
104 | $92 | $235 |
| Lactate dehydrogenase (LDH) level test A blood test that measures the amount of lactate dehydrogenase, an enzyme found in many body tissues. It helps assess tissue damage or disease. |
90 | $6 | $37 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
88 | $16 | $119 |
| 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. |
85 | $44 | $214 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
82 | $79 | $1,241 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
78 | $121 | $350 |
| 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. |
77 | $133 | $392 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
76 | $21 | $115 |
| CT scan of abdomen and pelvis with contrast A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas. |
73 | $167 | $1,517 |
| 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. |
57 | $47 | $242 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
47 | $15 | $115 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
46 | $4 | $40 |
| Irrigation of implanted venous access device This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids. |
37 | $19 | $88 |
| Blood sample collection from implanted device This procedure involves drawing a blood sample directly from a medical device that has been surgically placed in the body. |
34 | $18 | $69 |
| Carcinoembryonic antigen (CEA) level test A blood test that measures the level of carcinoembryonic antigen (CEA) protein. This test is used to monitor certain types of cancer. |
34 | $18 | $138 |
| PSA test (prostate cancer screening) | 33 | $18 | $125 |
| Urinalysis with microscopic exam A urine test performed manually that includes examining the sample under a microscope to check for abnormalities. |
30 | $3 | $35 |
| Automated red blood cell count An automated laboratory test that measures the number of red blood cells in a blood sample. |
29 | $4 | $38 |
| 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. |
26 | $10 | $71 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
24 | $17 | $117 |
| 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. |
23 | $23 | $167 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
22 | $13 | $97 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
20 | $14 | $113 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
18 | $5 | $38 |
| Nuclear medicine scan from skull base to mid-thigh with CT A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan. |
17 | $1,059 | $6,000 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 16 | $414 | $780 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
14 | $44 | $1,019 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
14 | $26 | $400 |
| Blood creatinine level test A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function. |
13 | $5 | $32 |
| Blood urea nitrogen test A blood test that measures the amount of urea nitrogen to assess kidney function. |
13 | $4 | $28 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
13 | $2 | $12 |
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.
57.9% high complexity
34.5% medium
7.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$5,778
Total received (2018-2024)
Avg $825/year across 7 years
Top 39% in IL for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
46
Companies
357
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
$554
2023
$471
2022
$285
2021
$361
2020
$620
2019
$1,621
2018
$1,865
Payments by company (2024)
Novartis Pharmaceuticals Corporation
$109
Astellas Pharma US Inc
$103
Gilead Sciences, Inc.
$103
Regeneron Healthcare Solutions, Inc.
$61
PFIZER INC.
$28
ABBVIE INC.
$27
SOBI, INC
$21
Eisai Inc.
$20
EMD Serono, Inc.
$18
GlaxoSmithKline, LLC.
$18
E.R. Squibb & Sons, L.L.C.
$16
Rigel Pharmaceuticals, Inc.
$16
Tempus AI, Inc
$14
Top 3 companies account for 56.8% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Biotech, Inc.
$961
Novartis Pharmaceuticals Corporation
$617
Genentech USA, Inc.
$387
Merck Sharp & Dohme Corporation
$314
Foundation Medicine, Inc.
$306
Pharmacyclics LLC, An AbbVie Company
$304
PFIZER INC.
$284
Amgen Inc.
$249
E.R. Squibb & Sons, L.L.C.
$242
Gilead Sciences, Inc.
$204
Lilly USA, LLC
$188
AstraZeneca Pharmaceuticals LP
$174
Astellas Pharma US Inc
$158
Agios Pharmaceuticals, Inc.
$148
Clovis Oncology, Inc.
$132
GENZYME CORPORATION
$117
Regeneron Healthcare Solutions, Inc.
$92
EMD Serono, Inc.
$85
Janssen Pharmaceuticals, Inc
$71
Boehringer Ingelheim Pharmaceuticals, Inc.
$65
Seattle Genetics, Inc.
$60
Eisai Inc.
$56
Daiichi Sankyo Inc.
$44
PharmaEssentia USA Corporation
$43
Bayer HealthCare Pharmaceuticals Inc.
$40
Merck Sharp & Dohme LLC
$36
Seagen Inc.
$36
Ipsen Biopharmaceuticals, Inc
$33
Alexion Pharmaceuticals, Inc.
$32
Celgene Corporation
$29
ABBVIE INC.
$27
Puma Biotechnology, Inc.
$24
Incyte Corporation
$22
Janssen Scientific Affairs, LLC
$22
Exelixis Inc.
$21
SOBI, INC
$21
GlaxoSmithKline, LLC.
$18
Rigel Pharmaceuticals, Inc.
$16
Tempus AI, Inc
$14
SERVIER PHARMACEUTICALS LLC
$13
Karyopharm Therapeutics Inc.
$12
Verastem, Inc.
$12
ARBOR PHARMACEUTICALS, INC.
$12
Heron Therapeutics, Inc.
$12
Takeda Pharmaceuticals U.S.A., Inc.
$11
MEDIVATION FIELD SOLUTIONS LLC
$11
Top 3 companies account for 34.0% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AFINITOR · ALIMTA · Alecensa · Avastin · BALVERSA · BAVENCIO · BESREMI · BOSULIF · Balversa · Bavencio · CALQUENCE · CHANTIX · CINVANTI · CYRAMZA · Cabometyx · Copiktra · DARZALEX · ELITEK · EMPLICITI · EPKINLY · ERLEADA · Enhertu · Erivedge · Erleada · FOUNDATIONONE · Fabhalta · GAZYVA · GILOTRIF · Gliadel · IBRANCE · IDHIFA · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · IRESSA · Imbruvica · JADENU · JAKAFI · JEVTANA · KEYTRUDA · KISQALI · Kyprolis · LENVIMA · LIBTAYO · LUTATHERA · LYNPARZA · Lenvima · MEKINIST · MYLOTARG · NERLYNX · Nerlynx · Neulasta · OJJAARA · OPDIVO · OPDUALAG · PADCEV · PIQRAY · PROMACTA · Padcev · Perjeta · Pomalyst · Revlimid · Rezlidhia · Rubraca · SANDOSTATIN · SARCLISA · SCEMBLIX · SOMATULINE DEPOT · SPRYCEL · SUTENT · Somatuline Depot · TASIGNA · TECENTRIQ · TIBSOVO · Trodelvy · ULTOMIRIS · VENCLEXTA · VERZENIO · VONJO · VOTRIENT · Venclexta · Vyloy · XALKORI · XARELTO · XGEVA · XPOVIO · XTANDI · Xofigo · Xospata
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
5
County median income
$62,449
Nearest hospital to ZIP centroid (approximate)
DECATUR MEMORIAL 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. Ontiveros is a mixed practice specialist, with above-average Medicare volume (top 13% in IL), with 19 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. Ontiveros experienced with iron infusion (injectafer)?
Based on Medicare claims data, Dr. Ontiveros performed 48,000 iron infusion (injectafer) 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. Ontiveros receive payments from pharmaceutical companies?
Yes. Dr. Ontiveros received a total of $5,778 from 46 companies across 357 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. Ontiveros's costs compare to other hematology & oncology specialists in Decatur?
Dr. Ontiveros's average Medicare payment per service is $4. 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. Ontiveros) 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 Decatur
Browse hematology & oncology specialists in Decatur ranked by procedure volume and transparency data.
Highest volume
Top Hematology & Oncology Specialists in IL
Hematology & oncology specialists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Hematology & Oncology Specialists in IL
Which IL hematology & oncology specialists receive the most from drug and device companies.
By company
Janssen Biotech, Inc. Payments to Doctors
See all physicians who received payments from Janssen Biotech, Inc.
By company
Novartis Pharmaceuticals Corporation Payments to Doctors
See all physicians who received payments from Novartis Pharmaceuticals Corporation.
By company
Genentech USA, Inc. Payments to Doctors
See all physicians who received payments from Genentech USA, 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