Medicare Enrolled
Dr. Yijun Cheng, M.D.
Hematology & Oncology · Williamsville, NY
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Cheng 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 →
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What this data tells you about Dr. Cheng
Dr. Yijun Cheng is a hematology & oncology specialist in Williamsville, NY, with 19 years of NPI registration. Based on federal Medicare data, Dr. Cheng performed 91,321 Medicare services across 2,669 unique beneficiaries.
Between the years covered by Open Payments, Dr. Cheng received a total of $219 from 5 pharmaceutical and/or device companies across 5 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Cheng 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 in practice
▲ Top 7% volume in NY
$219 industry payments
Medicare Practice Summary
Medicare Utilization ↗91,321
Medicare services
Top 7% in NY for hematology & oncology
2,669
Unique beneficiaries
$4
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~4,806 Medicare services per year of practice
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. |
51,000 | $1 | $2 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
15,600 | $2 | $4 |
| Iron sucrose injection (Venofer) An injection of iron sucrose used to replenish iron levels in the body. |
8,000 | $0 | $1 |
| Denosumab injection (Prolia/Xgeva) | 6,180 | $18 | $26 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,166 | $0 | $0 |
| Anti-nausea injection (ondansetron/Zofran) | 1,272 | $0 | $2 |
| 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. |
868 | $8 | $17 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
832 | $0 | $5 |
| 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. |
709 | $91 | $151 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
540 | $10 | $23 |
| 5% dextrose/water (500 ml = 1 unit) | 473 | $1 | $8 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
460 | $5 | $5 |
| 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. |
303 | $11 | $37 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
270 | $100 | $266 |
| 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. |
248 | $47 | $120 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
242 | $12 | $38 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
163 | $13 | $29 |
| Iron level test | 161 | $6 | $16 |
| Transferrin level test A blood test that measures the amount of transferrin, a protein that binds to and transports iron in the body. |
161 | $12 | $34 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
126 | $15 | $31 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
118 | $15 | $36 |
| 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. |
108 | $1 | $4 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
107 | $14 | $29 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 105 | $20 | $44 |
| 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. |
104 | $134 | $204 |
| 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. |
103 | $6 | $13 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
98 | $56 | $135 |
| 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. |
84 | $50 | $131 |
| 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. |
83 | $4 | $8 |
| 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. |
83 | $6 | $14 |
| 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. |
78 | $60 | $100 |
| 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. |
67 | $22 | $59 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
62 | $1 | $3 |
| 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. |
58 | $115 | $234 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
53 | $22 | $60 |
| 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. |
46 | $18 | $40 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
46 | $1 | $8 |
| 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. |
32 | $2 | $5 |
| Automated red blood cell count An automated laboratory test that measures the number of red blood cells in a blood sample. |
30 | $4 | $9 |
| 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. |
23 | $14 | $45 |
| 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. |
21 | $24 | $144 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
19 | $29 | $80 |
| New patient office visit, complex (60-74 min) | 19 | $158 | $293 |
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. A higher procedure volume generally indicates more experience with that procedure.
57.8% high complexity
37.3% medium
4.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$219
Total received (2019-2024)
Avg $55/year across 4 years
Bottom 20% in NY for hematology & oncology
5
Companies
5
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$184 (84.1%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$35 (15.9%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$43
2023
$21
2021
$14
2019
$141
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Novartis Pharmaceuticals Corporation
$25
Novo Nordisk Inc
$18
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2019-2024) ›
Covidien LP
$141
Novartis Pharmaceuticals Corporation
$25
Mirati Therapeutics, Inc.
$21
Novo Nordisk Inc
$18
Acrotech Biopharma LLC
$14
Top 3 companies account for 85.4% of all-time payments
Associated products mentioned in payments ›
BELEODAQ · KRAZATI · LigaSure · Ozempic · PLUVICTO
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
Most payments (84%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
21
Per 100K population
2.2
County median income
$71,175
Nearest hospital
UPSTATE NEW YORK VA HEALTHCARE SYSTEM (WESTERN NY VA HEALTHCARE SYSTEM)
5.6 mi
5.6 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | 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. Cheng is a mixed practice specialist, with above-average Medicare volume (top 7% in NY), with low-engagement industry engagement, 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. Cheng experienced with iron infusion (injectafer)?
Based on Medicare claims data, Dr. Cheng performed 51,000 iron infusion (injectafer) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Cheng receive payments from pharmaceutical companies?
Yes. Dr. Cheng received a total of $219 from 5 companies across 5 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Cheng's costs compare to other hematology & oncology specialists in Williamsville?
Dr. Cheng'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. Cheng) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): 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.
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