Medicare Enrolled
Dr. John Mathews
Medical Oncology · Dallas, TX
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Consulting-driven
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. Mathews 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. Mathews
Dr. John Mathews is a medical oncology specialist in Dallas, TX, with 15 years of NPI registration. Based on federal Medicare data, Dr. Mathews performed 10,238 Medicare services across 2,151 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mathews received a total of $5,966 from 14 pharmaceutical and/or device companies across 66 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in medical oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Mathews is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 15 years in practice
▲ Top 41% volume in TX
$5,966 industry payments
Medicare Practice Summary
Medicare Utilization ↗10,238
Medicare services
Top 41% in TX for medical oncology
2,151
Unique beneficiaries
$29
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~683 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 |
|---|---|---|---|
| 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. |
2,017 | $62 | $247 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
892 | $10 | $64 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
890 | $7 | $29 |
| 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. |
884 | $6 | $31 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
605 | $0 | $1 |
| 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. |
578 | $5 | $24 |
| 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. |
566 | $8 | $36 |
| 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. |
540 | $96 | $368 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
415 | $8 | $20 |
| 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. |
330 | $4 | $22 |
| 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. |
330 | $6 | $34 |
| Anti-nausea injection (Aloxi/palonosetron) | 240 | $1 | $114 |
| Tacrolimus level test A blood test to measure the amount of tacrolimus in your system. This helps ensure the medication is at a safe and effective level. |
145 | $13 | $101 |
| Magnesium sulfate injection, per 500 mg An injection of magnesium sulfate administered in 500 mg increments. |
138 | $1 | $6 |
| Sirolimus level test A blood test to measure the amount of sirolimus in your body. This helps your doctor check if the medicine level is within the safe and effective range. |
114 | $13 | $71 |
| Additional vaccine administration This code covers the administration of each additional vaccine given during the same encounter. It is billed alongside the primary vaccine administration code. |
111 | $12 | $58 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
108 | $17 | $60 |
| 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. |
102 | $23 | $157 |
| Reticulated platelet measurement A blood test that measures the level of young, newly formed platelets in the body. |
99 | $35 | $143 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
93 | $105 | $707 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
85 | $23 | $161 |
| Hospital discharge day management, 30 minutes or less This service covers the final day of hospital care when the patient is being discharged. It includes coordination of care and instructions for the patient within a time frame of 30 minutes or less. |
85 | $63 | $249 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
83 | $95 | $470 |
| 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. |
69 | $11 | $96 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
63 | $58 | $211 |
| 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. |
61 | $51 | $313 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
54 | $12 | $108 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
53 | $39 | $135 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
53 | $167 | $943 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
48 | $1 | $7 |
| Pneumococcal vaccine, 13-valent | 39 | $253 | $570 |
| Hepatitis B vaccine, adult dosage An injection of the hepatitis B vaccine administered to adults as part of a three-dose immunization schedule. |
39 | $69 | $164 |
| 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. |
38 | $66 | $250 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
38 | $31 | $58 |
| Hepatitis B vaccine administration This procedure involves the injection of the hepatitis B vaccine to provide immunization against the hepatitis B virus. |
38 | $31 | $58 |
| 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. |
38 | $2 | $19 |
| 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. |
27 | $52 | $344 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
26 | $16 | $100 |
| 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. |
19 | $26 | $256 |
| 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. |
18 | $20 | $114 |
| 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. |
18 | $132 | $565 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
18 | $8 | $31 |
| 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. |
16 | $140 | $523 |
| Transplantation of patient-derived stem cells | 15 | $139 | $2,334 |
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.
3.7% high complexity
12.9% medium
83.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$5,966
Total received (2019-2024)
Avg $994/year across 6 years
Top 44% in TX for medical oncology
14
Companies
66
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.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$3,998 (67.0%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$1,957 (32.8%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$12 (0.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,001
2023
$1,392
2022
$302
2021
$91
2020
$71
2019
$3,110
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Janssen Scientific Affairs, LLC
$4,430
Astellas Pharma US Inc
$642
Kite Pharma, Inc.
$330
E.R. Squibb & Sons, L.L.C.
$135
Novo Nordisk Inc
$125
Legend Biotech USA Inc.
$97
SANOFI-AVENTIS U.S. LLC
$75
Current Health Inc.
$31
Takeda Pharmaceuticals U.S.A., Inc.
$30
Daiichi Sankyo Inc.
$17
Genmab U.S., Inc.
$15
MorphoSys, US Inc.
$14
Pharmacyclics LLC, An AbbVie Company
$13
Gilead Sciences, Inc.
$12
Top 3 companies account for 90.5% of total payments
Associated products mentioned in payments ›
AMBISOME · CARVYKTI · Cresemba · DARZALEX · Epkinly · IMBRUVICA · LIVTENCITY · MONJUVI · MOZOBIL · REBLOZYL · REZUROCK · Vanflyta · Wegovy · XOSPATA · Xospata · Yescarta
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 (67%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
Equivalent to $58 per 100 Medicare services performed
Geographic Context
Medical oncologists within 10 mi
92
Per 100K population
3.5
County median income
$74,149
Nearest hospital
MEDICAL CITY DALLAS HOSPITAL
0.0 mi
0.0 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 measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Mathews is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement, with 15 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Mathews experienced with hospital follow-up visit, moderate complexity?
Based on Medicare claims data, Dr. Mathews performed 2,017 hospital follow-up visit, moderate complexity 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. Mathews receive payments from pharmaceutical companies?
Yes. Dr. Mathews received a total of $5,966 from 14 companies across 66 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. Mathews's costs compare to other medical oncologists in Dallas?
Dr. Mathews's average Medicare payment per service is $29. 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. Mathews) 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. The Transparency Score measures 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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