Medicare Enrolled
Dr. Rene Castillo, MD
Hematology & Oncology · Austin, TX
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. Castillo 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. Castillo
Dr. Rene Castillo is a hematology & oncology specialist in Austin, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Castillo performed 243,953 Medicare services across 5,905 unique beneficiaries.
Between the years covered by Open Payments, Dr. Castillo received a total of $952 from 17 pharmaceutical and/or device companies across 44 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. Castillo 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.
✓ 19 years in practice
▲ Top 1% volume in TX
$952 industry payments
Medicare Practice Summary
Medicare Utilization ↗243,953
Medicare services
Top 1% in TX for hematology & oncology
5,905
Unique beneficiaries
$8
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~12,840 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 (Feraheme) An injection of ferumoxytol used to treat iron deficiency anemia in patients not on dialysis. |
68,850 | $0 | $5 |
| Iron sucrose injection (Venofer) An injection of iron sucrose used to replenish iron levels in the body. |
61,300 | $0 | $2 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
16,830 | $2 | $20 |
| Pembrolizumab injection (Keytruda) | 15,300 | $43 | $137 |
| Oxaliplatin chemotherapy injection This procedure involves the administration of oxaliplatin, a chemotherapy medication, via injection. The dosage specified is 0.5 mg. |
11,000 | $0 | $33 |
| Nivolumab injection (Opdivo) | 10,800 | $24 | $76 |
| Paclitaxel chemotherapy injection | 10,752 | $0 | $8 |
| Anti-nausea injection (fosaprepitant) An injection of fosaprepitant, a medication used to prevent nausea and vomiting. |
9,300 | $0 | $5 |
| Daratumumab injection (Darzalex) An injection containing daratumumab and hyaluronidase-fihj administered under the skin. |
7,920 | $38 | $128 |
| Denosumab injection (Prolia/Xgeva) | 6,000 | $19 | $66 |
| 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. |
2,850 | $0 | $3 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,547 | $0 | $1 |
| Epoetin alfa injection (Retacrit) for anemia An injection of a biosimilar form of epoetin alfa used for non-end-stage renal disease purposes. The dose administered is 1000 units. |
2,370 | $6 | $28 |
| 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. |
1,658 | $8 | $36 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
1,641 | $8 | $20 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
1,372 | $10 | $64 |
| Anti-nausea injection (Aloxi/palonosetron) | 1,260 | $1 | $114 |
| 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. |
1,100 | $34 | $236 |
| 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. |
844 | $132 | $496 |
| 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. |
729 | $86 | $368 |
| Injection, granisetron hydrochloride, 100 mcg | 680 | $0 | $24 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
482 | $13 | $60 |
| Iron level test | 480 | $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. |
480 | $9 | $35 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
425 | $101 | $707 |
| 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. |
418 | $48 | $313 |
| 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. |
417 | $22 | $157 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
404 | $7 | $431 |
| Carboplatin chemotherapy injection, 50 mg Administration of a 50 mg dose of carboplatin, a chemotherapy medication, via injection. |
368 | $2 | $300 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
332 | $2 | $13 |
| 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. |
318 | $11 | $96 |
| 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. |
312 | $19 | $180 |
| 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. |
312 | $272 | $2,762 |
| Pegfilgrastim injection, 0.5 mg An injection of pegfilgrastim, a medication that stimulates the production of white blood cells. This specific code applies to the brand-name drug and excludes biosimilar versions. |
240 | $73 | $1,348 |
| Injection, potassium chloride, per 2 meq | 220 | $0 | $1 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 216 | $20 | $128 |
| 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. |
201 | $2 | $19 |
| 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. |
194 | $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. |
184 | $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. |
184 | $6 | $34 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
180 | $12 | $108 |
| 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. |
174 | $49 | $344 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
169 | $57 | $211 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 158 | $134 | $3,675 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
130 | $1 | $7 |
| 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. |
117 | $19 | $99 |
| Reticulated platelet measurement A blood test that measures the level of young, newly formed platelets in the body. |
106 | $35 | $143 |
| 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. |
104 | $9 | $75 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
102 | $22 | $161 |
| 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. |
100 | $25 | $256 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
91 | $1 | $8 |
| Subcutaneous or intramuscular chemotherapy injection This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle. |
86 | $26 | $145 |
| 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. |
83 | $117 | $565 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
81 | $7 | $29 |
| 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. |
72 | $93 | $357 |
| Radiation therapy, 3+ areas, 6-10 MeV Radiation treatment delivered to three or more separate areas using advanced techniques like custom blocking and rotational beams with an energy level of 6-10 MeV. |
71 | $177 | $700 |
| Immunoglobulin level test A blood test that measures the level of gammaglobulins, which are immune system proteins. |
66 | $9 | $56 |
| PSA test (prostate cancer screening) | 65 | $18 | $94 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
63 | $16 | $100 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
60 | $25 | $247 |
| New patient office visit, complex (60-74 min) | 56 | $167 | $709 |
| Radiation therapy, 3+ areas, 11-19 MeV Delivery of high-energy radiation (11-19 MeV) to three or more separate treatment areas using custom blocking, tangential ports, wedges, rotational beams, and compensators. |
54 | $178 | $700 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
52 | $15 | $76 |
| Immunoglobulin light chain measurement A blood test that measures the levels of immunoglobulin light chains, which are proteins produced by plasma cells. |
52 | $17 | $60 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
38 | $14 | $73 |
| Venipuncture for blood collection A procedure to draw blood from a vein for medical testing or analysis. |
37 | $70 | $264 |
| 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. |
37 | $127 | $500 |
| Injection, fosnetupitant 235 mg and palonosetron 0.25 mg | 37 | $328 | $1,722 |
| 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. |
35 | $44 | $289 |
| 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. |
33 | $16 | $114 |
| Concurrent intravenous infusion Administration of medication or fluid into a vein for therapy, prevention, or diagnosis while another infusion is being given. |
24 | $16 | $94 |
| 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. |
23 | $171 | $1,067 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
21 | $53 | $821 |
| On-body injector for subcutaneous injection A device is applied to the skin to automatically deliver a medication injection under the skin. |
20 | $14 | $96 |
| Automated red blood cell count An automated laboratory test that measures the number of red blood cells in a blood sample. |
15 | $4 | $23 |
| Serum protein measurement A blood test that measures the total amount of protein in the serum. It helps evaluate overall health and nutritional status. |
13 | $11 | $99 |
| Immunologic analysis of serum A laboratory test that uses immunologic techniques to analyze components in a blood serum sample. |
13 | $29 | $108 |
| 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 | $52 | $298 |
| 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. |
12 | $136 | $694 |
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.
29.4% high complexity
66.5% medium
4.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$952
Total received (2018-2024)
Avg $159/year across 6 years
Bottom 29% in TX for hematology & oncology
17
Companies
44
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
$618 (64.9%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$334 (35.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$148
2023
$239
2022
$216
2021
$26
2019
$168
2018
$155
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Janssen Biotech, Inc.
$241
Stryker Corporation
$170
Sunovion Pharmaceuticals Inc.
$122
Janssen Pharmaceuticals, Inc
$76
PFIZER INC.
$62
E.R. Squibb & Sons, L.L.C.
$45
Novartis Pharmaceuticals Corporation
$44
AstraZeneca Pharmaceuticals LP
$35
JAZZ PHARMACEUTICALS INC.
$30
Seagen Inc.
$24
Boston Scientific Corporation
$20
Regeneron Healthcare Solutions, Inc.
$17
Genentech USA, Inc.
$16
Puma Biotechnology, Inc.
$15
Celgene Corporation
$12
Gilead Sciences, Inc.
$12
Exelixis Inc.
$12
Top 3 companies account for 55.9% of total payments
Associated products mentioned in payments ›
CALQUENCE · Cabometyx · DARZALEX · ELIQUIS · ERLEADA · Fabhalta · IBRANCE · IMBRUVICA · INLYTA · LIBTAYO · LONHALA MAGNAIR · MAKO · OPDIVO · OXBRYTA · PROMACTA · Perjeta · Pomalyst · TUKYSA · TheraSphere Y90 Glass Microspheres 10 GBq · Utibron · XARELTO · ZEPZELCA
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 (65%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Equivalent to $0 per 100 Medicare services performed
Geographic Context
Hematology & oncology specialists within 10 mi
26
Per 100K population
2.0
County median income
$97,169
Nearest hospital
AUSTIN OAKS 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. Castillo is a mixed practice specialist, with above-average Medicare volume (top 1% in TX), with low-engagement industry engagement, with 19 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. Castillo experienced with iron infusion (feraheme)?
Based on Medicare claims data, Dr. Castillo performed 68,850 iron infusion (feraheme) 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. Castillo receive payments from pharmaceutical companies?
Yes. Dr. Castillo received a total of $952 from 17 companies across 44 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. Castillo's costs compare to other hematology & oncology specialists in Austin?
Dr. Castillo'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. Castillo) 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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