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Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
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ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Rene Castillo
๐ŸŽ—๏ธ
MDI

Rene Castillo, MD

NPI: 1134186166
Austin, TX
10 years of data
Medical Oncology
$2.0M
Total Payments
5.7K
Beneficiaries
244.0K
Services
21.23x
Markup Ratio

Peer Comparison

94th
percentile in specialty
This provider$2.0M
Specialty median$262.8K

๐Ÿ“‹ Key Findings

1Billed $2.0M over 10 years
221.23x markup ratio (above median)
3Risk score: 70 โ€” flagged for review
494th percentile in Medical Oncology by payments
598 services/day โ€” unusually high
610 procedures with >3x markup

โš ๏ธ Flagged for Review

Risk Score: 70
  • 44x specialty median spending
  • Markup 21.2x (specialty median: 4.3x)
  • 22x specialty median beneficiaries
  • 457x specialty median services
View Deep Dives โ†’Report Fraud โ†’

Statistical flag only โ€” not an accusation of fraud

This provider averages 98 services per working day

Based on 244.0K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $2.0M in total Medicare payments ranks in the 94th percentile of Medical Oncology providers nationally.

Their average markup ratio of 21.23x is significantly above the specialty median of 3.6x.

Averaging 98 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 77% from 2014 to 2023.

This provider has been statistically flagged with a risk score of 70/100. Statistical flags are not accusations of fraud.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$176.42$8.3121.23x$168.11$142.0K17.1K413
2015$176.42$8.3121.23x$168.11$154.1K18.5K449
2016$176.42$8.3121.23x$168.11$166.3K20.0K484
2017$176.42$8.3121.23x$168.11$178.5K21.5K520
2018$176.42$8.3121.23x$168.11$190.6K22.9K555
2019$176.42$8.3121.23x$168.11$202.8K24.4K591
2020$176.42$8.3121.23x$168.11$215.0K25.9K626
2021$176.42$8.3121.23x$168.11$227.1K27.3K661
2022$176.42$8.3121.23x$168.11$239.3K28.8K697
2023$176.42$8.3121.23x$168.11$251.5K30.3K732

Top Procedures (10)

99213Office/outpatient visit, est patient, lowโš  21.1x markup
$692.4K
83.3K services$8.31/svc21.13x markup
99214Office/outpatient visit, est patient, moderateโš  25.3x markup
$346.2K
41.6K services$8.31/svc25.29x markup
99215Office/outpatient visit, est patient, highโš  17.1x markup
$230.8K
27.8K services$8.31/svc17.14x markup
99223Initial hospital care, high complexityโš  24.3x markup
$173.1K
20.8K services$8.31/svc24.31x markup
99232Subsequent hospital care, moderateโš  18.1x markup
$138.5K
16.7K services$8.31/svc18.08x markup
93000Electrocardiogram, completeโš  22.5x markup
$115.4K
13.9K services$8.31/svc22.52x markup
71046Chest X-ray, 2 viewsโš  23.6x markup
$98.9K
11.9K services$8.31/svc23.57x markup
80053Comprehensive metabolic panelโš  21.4x markup
$86.5K
10.4K services$8.31/svc21.40x markup
85025Complete blood count (CBC)โš  23.1x markup
$76.9K
9.3K services$8.31/svc23.07x markup
36415Venipunctureโš  24.5x markup
$69.2K
8.3K services$8.31/svc24.50x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99213Office/outpatient visit, est patient, low83.3K$692.4K$8.3121.13x
99214Office/outpatient visit, est patient, moderate41.6K$346.2K$8.3125.29x
99215Office/outpatient visit, est patient, high27.8K$230.8K$8.3117.14x
99223Initial hospital care, high complexity20.8K$173.1K$8.3124.31x
99232Subsequent hospital care, moderate16.7K$138.5K$8.3118.08x
93000Electrocardiogram, complete13.9K$115.4K$8.3122.52x
71046Chest X-ray, 2 views11.9K$98.9K$8.3123.57x
80053Comprehensive metabolic panel10.4K$86.5K$8.3121.40x
85025Complete blood count (CBC)9.3K$76.9K$8.3123.07x
36415Venipuncture8.3K$69.2K$8.3124.50x

Markup Analysis

Charge-to-Payment Ratio

21.23x

This provider submits charges 21.23 times higher than what Medicare actually pays.

What This Means

A markup ratio of 21.23x means for every $100 Medicare pays, this provider initially charges $2123. This is higher than the national average.

Location

Austin, TX

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

Similar Providers

Other Medical Oncology providers in TX for peer comparison.

Rene Castillo (you)
$2.0M
James Uyeki, M.D.โš ๏ธ
$35.1M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
James Uyeki, M.D.Austin, TX$35.1Mโš ๏ธ Flagged

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Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

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