Medicare Enrolled
Dr. William Derosa, D.O.
Hematology & Oncology · Morristown, NJ
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Speaking/Promotional
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. Derosa 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. Derosa?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Derosa
Dr. William Derosa is a hematology & oncology specialist in Morristown, NJ, with 20 years of NPI registration. Based on federal Medicare data, Dr. Derosa performed 9,535 Medicare services across 2,930 unique beneficiaries.
Between the years covered by Open Payments, Dr. Derosa received a total of $22,822 from 28 pharmaceutical and/or device companies across 72 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Derosa 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 in practice
▲ Top 33% volume in NJ
$22,822 industry payments
Medicare Practice Summary
Medicare Utilization ↗9,535
Medicare services
Top 33% in NJ for hematology & oncology
2,930
Unique beneficiaries
$25
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~477 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 |
|---|---|---|---|
| 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. |
1,214 | $8 | $32 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
1,150 | $8 | $15 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
923 | $10 | $40 |
| 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. |
923 | $4 | $19 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
922 | $7 | $28 |
| 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. |
921 | $5 | $20 |
| 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. |
577 | $154 | $366 |
| 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. |
475 | $6 | $25 |
| 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. |
440 | $105 | $274 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
400 | $9 | $38 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
221 | $13 | $56 |
| Iron level test | 220 | $6 | $27 |
| 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. |
220 | $9 | $36 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
166 | $17 | $52 |
| Beta-2 microglobulin level test A blood test that measures the level of beta-2 microglobulin, a protein produced by cells in the body. |
101 | $16 | $67 |
| 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. |
95 | $104 | $256 |
| Serum protein measurement A blood test that measures the total amount of protein in the serum. It helps evaluate overall health and nutritional status. |
87 | $11 | $36 |
| 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. |
78 | $68 | $179 |
| Prothrombin time test (blood clotting) A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process. |
54 | $4 | $17 |
| New patient office visit, complex (60-74 min) | 51 | $189 | $516 |
| 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. |
49 | $152 | $497 |
| Basic blood chemical test (calcium, ionized) A blood test that measures basic chemical levels, specifically including calcium and ionized calcium. |
29 | $13 | $35 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
29 | $16 | $69 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
28 | $69 | $118 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
28 | $33 | $50 |
| Serum immunofixation test A laboratory test that analyzes a blood serum sample to identify specific abnormal proteins. The procedure uses an immunologic technique to detect and characterize these proteins. |
23 | $22 | $75 |
| Creatinine clearance test A test that measures how well the kidneys are filtering waste from the blood. It helps assess overall kidney function. |
20 | $8 | $39 |
| Bone marrow biopsy and aspiration A procedure to remove a small sample of bone marrow and liquid for laboratory testing. The sample is analyzed to help diagnose various medical conditions. |
18 | $154 | $988 |
| Sed rate test (inflammation marker) This automated test measures how quickly red blood cells settle in a tube to detect inflammation in the body. |
16 | $3 | $12 |
| Hepatitis B core antibody (IgM) test A blood test that measures the level of IgM antibodies to the hepatitis B core antigen. This test is used to help determine if a person has a recent or acute hepatitis B infection. |
16 | $12 | $49 |
| HIV-1 antigen and HIV-1/2 antibody test A laboratory test using immunoassay techniques to detect HIV-1 antigens and antibodies for both HIV-1 and HIV-2. |
15 | $24 | $38 |
| Coagulation assessment blood test A blood test that measures how long it takes for blood to clot. The sample can be plasma or whole blood. |
14 | $6 | $25 |
| Urine total protein level A laboratory test that measures the total amount of protein present in a urine sample. |
12 | $4 | $15 |
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.
Industry Payment Transparency
Open Payments through 2023 ↗$22,822
Total received (2018-2023)
Avg $3,804/year across 6 years
Top 11% in NJ for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
28
Companies
72
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$20,905 (91.6%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$1,916 (8.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2023
$490
2022
$41
2021
$102
2020
$118
2019
$14,190
2018
$7,879
Payments by company (2023)
Consulting
Speaking
Meals & Travel
Research
Daiichi Sankyo Inc.
$165
Genmab U.S., Inc.
$115
Celgene Corporation
$85
Novartis Pharmaceuticals Corporation
$82
Takeda Pharmaceuticals U.S.A., Inc.
$26
Eisai Inc.
$17
Top 3 companies account for 74.4% of 2023 payments
All-time payments by company (2018-2023) ›
Takeda Pharmaceuticals U.S.A., Inc.
$20,806
Janssen Research & Development, LLC
$461
ASD Specialty Healthcare, LLC
$168
Daiichi Sankyo Inc.
$165
Novartis Pharmaceuticals Corporation
$131
Celgene Corporation
$127
Genmab U.S., Inc.
$115
Incyte Corporation
$99
AbbVie, Inc.
$99
Sirtex Medical Inc
$94
AstraZeneca Pharmaceuticals LP
$67
Merck Sharp & Dohme Corporation
$64
Seagen Inc.
$56
Lilly USA, LLC
$46
Puma Biotechnology, Inc.
$42
Myriad Genetic Laboratories, Inc.
$38
Bayer HealthCare Pharmaceuticals Inc.
$29
E.R. Squibb & Sons, L.L.C.
$29
Janssen Biotech, Inc.
$28
Gilead Sciences, Inc.
$27
PFIZER INC.
$26
Eisai Inc.
$17
Regeneron Healthcare Solutions, Inc.
$15
Pharmacyclics LLC, An AbbVie Company
$15
GENZYME CORPORATION
$15
Foundation Medicine, Inc.
$15
EMD Serono, Inc.
$14
EISAI INC.
$13
Top 3 companies account for 93.9% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · Bavencio · CYRAMZA · DARZALEX · Epkinly · FASLODEX · FOUNDATIONONE · IBRANCE · IMBRUVICA · Imbruvica · KEYTRUDA · KISQALI · LARTRUVO · LIBTAYO · LYNPARZA · Lenvima · NINLARO · Nerlynx · Nubeqa · OPDIVO · PADCEV · SIR-Spheres Microspheres · TAGRISSO · TUKYSA · VERZENIO · Venclexta · Vitrakvi · myRisk
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 →
The majority of payments (92%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in hematology & oncology and does not inherently indicate bias, but patients may wish to be aware.
Geographic Context
Hematology & oncology specialists within 10 mi
183
Per 100K population
35.9
County median income
$134,929
Nearest hospital
GREYSTONE PARK PSYCHIATRIC HOSPITAL
4.7 mi
4.7 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 2023 |
| 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. Derosa is a mixed practice specialist, with moderate Medicare volume, with speaking/promotional industry engagement in the top 11% of NJ peers, 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. Derosa experienced with complete blood count (cbc) with differential?
Based on Medicare claims data, Dr. Derosa performed 1,214 complete blood count (cbc) with differential 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. Derosa receive payments from pharmaceutical companies?
Yes. Dr. Derosa received a total of $22,822 from 28 companies across 72 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. Derosa's costs compare to other hematology & oncology specialists in Morristown?
Dr. Derosa's average Medicare payment per service is $25. 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. Derosa) 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 →
Explore related providers
Same specialty & city
Hematology & Oncology Specialists in Morristown
Browse hematology & oncology specialists in Morristown ranked by procedure volume and transparency data.
Highest volume
Top Hematology & Oncology Specialists in NJ
Hematology & oncology specialists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Hematology & Oncology Specialists in NJ
Which NJ hematology & oncology specialists receive the most from drug and device companies.
By company
Takeda Pharmaceuticals U.S.A., Inc. Payments to Doctors
See all physicians who received payments from Takeda Pharmaceuticals U.S.A., Inc.
By company
Janssen Research & Development, LLC Payments to Doctors
See all physicians who received payments from Janssen Research & Development, LLC.
By company
ASD Specialty Healthcare, LLC Payments to Doctors
See all physicians who received payments from ASD Specialty Healthcare, LLC.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology