Medicare Enrolled
Dr. John Renshaw, M.D.
Hematology & Oncology · San Antonio, TX
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. Renshaw 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. Renshaw
Dr. John Renshaw is a hematology & oncology specialist in San Antonio, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Renshaw performed 54,860 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Renshaw received a total of $321,716 from 60 pharmaceutical and/or device companies across 458 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. Renshaw 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 17% volume in TX
$321,716 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗54,860
Medicare services
Top 17% in TX for hematology & oncology
Not available
Unique patients (not deduplicated)
$8
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 |
|---|---|---|---|
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
20,800 | $2 | $20 |
| Anti-nausea injection (fosaprepitant) An injection of fosaprepitant, a medication used to prevent nausea and vomiting. |
10,350 | $0 | $5 |
| 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. |
7,325 | $0 | $3 |
| Immune globulin infusion (Octagam) This procedure involves the administration of immune globulin medication directly into a vein. It is provided in a non-lyophilized liquid form. |
5,030 | $34 | $234 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
1,282 | $0 | $1 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
974 | $8 | $20 |
| Anti-nausea injection (Aloxi/palonosetron) | 930 | $1 | $114 |
| 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. |
822 | $8 | $36 |
| Injection, granisetron hydrochloride, 100 mcg | 670 | $0 | $24 |
| 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. |
566 | $62 | $250 |
| Injection, leucovorin calcium, per 50 mg | 563 | $3 | $25 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
479 | $10 | $64 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
457 | $2 | $13 |
| 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. |
358 | $21 | $157 |
| Flow cytometry, additional marker An additional marker is tested during a flow cytometry procedure to analyze DNA or cells. This step adds specific data points to the initial analysis. |
332 | $18 | $180 |
| Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | 266 | $3 | $373 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
250 | $98 | $707 |
| 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. |
237 | $90 | $368 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
204 | $17 | $60 |
| 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. |
165 | $60 | $247 |
| 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. |
143 | $6 | $31 |
| 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. |
143 | $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. |
142 | $6 | $34 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
142 | $11 | $108 |
| 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. |
134 | $47 | $313 |
| Reticulated platelet measurement A blood test that measures the level of young, newly formed platelets in the body. |
131 | $35 | $143 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
130 | $13 | $60 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
126 | $1 | $7 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
123 | $15 | $100 |
| 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. |
123 | $11 | $96 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
115 | $6 | $431 |
| 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. |
106 | $38 | $135 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
100 | $21 | $161 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
87 | $9 | $56 |
| 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. |
87 | $48 | $344 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
81 | $55 | $211 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
77 | $8 | $49 |
| 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. |
68 | $129 | $496 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
66 | $47 | $821 |
| 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. |
61 | $172 | $1,067 |
| Concurrent intravenous infusion Administration of medication or fluid into a vein for therapy, prevention, or diagnosis while another infusion is being given. |
47 | $15 | $94 |
| Intravenous push injection of new drug or substance A healthcare provider injects a new medication or substance directly into a vein using a push technique. |
46 | $42 | $289 |
| 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. |
41 | $18 | $99 |
| IV chemotherapy initiation with community continuation Initiation of an intravenous chemotherapy infusion in a clinic using clinic supplies, with continuation of the infusion in a community setting such as home or assisted living. |
41 | $122 | $500 |
| 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. |
37 | $4 | $30 |
| 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. |
36 | $1 | $19 |
| 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. |
33 | $89 | $357 |
| Iron level test | 30 | $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. |
30 | $8 | $35 |
| Serum protein measurement A blood test that measures the total amount of protein in the serum. It helps evaluate overall health and nutritional status. |
29 | $11 | $99 |
| 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. |
26 | $18 | $114 |
| Sed rate test (inflammation marker) This automated test measures how quickly red blood cells settle in a tube to detect inflammation in the body. |
24 | $3 | $36 |
| 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. |
22 | $2 | $19 |
| 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. |
19 | $122 | $565 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 19 | $90 | $657 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
18 | $15 | $76 |
| 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. |
17 | $28 | $686 |
| Intensity-modulated radiation therapy delivery Delivery of radiation therapy using narrow beams that are spatially and temporally modulated to target specific areas. This process is performed per treatment session. |
16 | $272 | $2,762 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
15 | $70 | $560 |
| 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. |
15 | $1,109 | $4,802 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
14 | $74 | $372 |
| 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. |
14 | $100 | $470 |
| Flow cytometry DNA or cell analysis, first marker A laboratory test that uses a laser to analyze cells or DNA by detecting a specific marker on the cell surface or within the cell. |
13 | $56 | $298 |
| 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. |
13 | $25 | $256 |
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.
11.1% high complexity
79.5% medium
9.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$321,716
Total received (2018-2024)
Avg $45,959/year across 7 years
Top 2% in TX for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
60
Companies
458
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
$104,004
2023
$141,293
2022
$27,162
2021
$15,417
2020
$14,854
2019
$13,212
2018
$5,775
Payments by company (2024)
BeiGene USA, Inc.
$46,294
Karyopharm Therapeutics Inc.
$23,022
AstraZeneca Pharmaceuticals LP
$16,460
GlaxoSmithKline, LLC.
$16,188
ABBVIE INC.
$1,345
GENZYME CORPORATION
$229
Genmab U.S., Inc.
$125
Bayer Healthcare Pharmaceuticals Inc.
$125
Takeda Pharmaceuticals U.S.A., Inc.
$100
PFIZER INC.
$72
Alexion Pharmaceuticals, Inc.
$30
Gilead Sciences, Inc.
$15
Top 3 companies account for 82.5% of 2024 payments
All-time payments by company (2018-2024) ›
BeiGene USA, Inc.
$128,529
Karyopharm Therapeutics Inc.
$47,009
Amgen Inc.
$33,299
ABBVIE INC.
$32,885
AstraZeneca Pharmaceuticals LP
$28,701
GlaxoSmithKline, LLC.
$16,188
Genentech USA, Inc.
$8,584
Jazz Pharmaceuticals Inc.
$7,969
AbbVie Inc.
$7,239
Seagen Inc.
$2,600
Novocure Inc.
$1,272
Aadi Bioscience, Inc.
$1,000
GENZYME CORPORATION
$638
BeiGene, Ltd.
$525
Takeda Pharmaceuticals U.S.A., Inc.
$478
Novartis Pharmaceuticals Corporation
$431
E.R. Squibb & Sons, L.L.C.
$428
Janssen Biotech, Inc.
$266
Exelixis Inc.
$262
Incyte Corporation
$215
Seattle Genetics, Inc.
$192
Bayer HealthCare Pharmaceuticals Inc.
$182
Astellas Pharma US Inc
$156
AbbVie, Inc.
$153
Adaptive Biotechnologies Corporation
$146
Ipsen Biopharmaceuticals, Inc
$140
EMD Serono, Inc.
$140
TESARO, Inc.
$129
Genmab U.S., Inc.
$125
Bayer Healthcare Pharmaceuticals Inc.
$125
ImmunoGen, Inc.
$125
G1 Therapeutics, Inc.
$125
PFIZER INC.
$123
Agios Pharmaceuticals, Inc.
$122
Merck Sharp & Dohme Corporation
$113
Celgene Corporation
$112
PTC Therapeutics, Inc.
$107
Janssen Pharmaceuticals, Inc
$97
Verastem, Inc.
$89
Lilly USA, LLC
$85
Daiichi Sankyo Inc.
$62
JAZZ PHARMACEUTICALS INC.
$57
Puma Biotechnology, Inc.
$53
Regeneron Healthcare Solutions, Inc.
$47
Alexion Pharmaceuticals, Inc.
$47
Kite Pharma, Inc.
$46
EISAI INC.
$39
Rigel Pharmaceuticals, Inc.
$38
Helsinn Therapeutics (U.S.), Inc.
$32
Apellis Pharmaceuticals, Inc.
$30
Gilead Sciences, Inc.
$27
TerSera Therapeutics LLC
$22
Boehringer Ingelheim Pharmaceuticals, Inc.
$19
PORTOLA PHARMACEUTICALS, INC.
$16
Pharmacyclics LLC, An AbbVie Company
$15
Medtronic USA, Inc.
$15
Clovis Oncology, Inc.
$14
Taiho Oncology, Inc.
$13
Dendreon Pharmaceuticals LLC
$13
Secura Bio, Inc.
$9
Top 3 companies account for 64.9% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AKYNZEO · ANDEXXA · Abraxane · Avastin · BOSULIF · BRUKINSA · Balversa · Bavencio · Blincyto · CABLIVI · CALQUENCE · COSELA · CYRAMZA · Cabometyx · Columvi · Copiktra · DARZALEX · ELITEK · EMEND · EMPLICITI · ERLEADA · EXKIVITY · Elahere · Empaveli · Enhertu · Epkinly · FARYDAK · FRUZAQLA · FYARRO · GAZYVA · GILOTRIF · IBRANCE · ICLUSIG · IMBRUVICA · IMFINZI · Imbruvica · JAKAFI · JEVTANA · KANJINTI · KEYTRUDA · KISQALI · Kyprolis · LIBTAYO · LYNPARZA · Lenvima · Lonsurf · Lunsumio · Lupron Depot · MEKINIST · MVASI · NINLARO · Nerlynx · Neulasta · Nplate · Nubeqa · OJJAARA · OPDIVO · OSTEOCOOL RF ABLATION · Onivyde · PIQRAY · PROMACTA · PROVENGE · RETEVMO · RYDAPT · Revlimid · Rubraca · SANDOSTATIN · SARCLISA · SOMATULINE DEPOT · SPRYCEL · Stivarga · TAGRISSO · TASIGNA · TIBSOVO · TIVDAK · Tavalisse · ULTOMIRIS · VENCLEXTA · VOTRIENT · VYXEOS · Vectibix · Venclexta · Vitrakvi · XARELTO · XGEVA · XOSPATA · XPOVIO · XTANDI · Xofigo · Yescarta · ZEJULA · ZOLADEX · clonoSEQ
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
56
County median income
$70,571
Nearest hospital to ZIP centroid (approximate)
SAN ANTONIO BEHAVIORAL HEALTHCARE 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. Renshaw is a mixed practice specialist, with above-average Medicare volume (top 17% in TX), 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. Renshaw experienced with darbepoetin injection (aranesp) for anemia?
Based on Medicare claims data, Dr. Renshaw performed 20,800 darbepoetin injection (aranesp) for anemia 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. Renshaw receive payments from pharmaceutical companies?
Yes. Dr. Renshaw received a total of $321,716 from 60 companies across 458 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. Renshaw's costs compare to other hematology & oncology specialists in San Antonio?
Dr. Renshaw's average Medicare payment per service is $8. 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. Renshaw) 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 →
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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.
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