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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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Methodology•Download Data
  1. Home
  2. Providers
  3. Rebecca Kosloff
🎗️
MDIndividual

Rebecca Kosloff, MD

NPI: 1376500769
Bonita Springs, FL
10 years of data
Hematology-Oncology
$47.1M
Total Payments
715
Beneficiaries
4.3M
Services
3.25x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$47.1M
Specialty median$339.6K
Rank #16 of 60 in specialty

📋 Key Findings

1Billed $47.1M over 10 years
23.25x markup ratio (above median)
399th percentile in Hematology-Oncology by payments
41.7K services/day — physically implausible
56 procedures with >3x markup

⚠️ This provider averages 1.7K services per working day — physically unusual for an individual practitioner

Based on 4.3M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $47.1M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 1.7K services per working day raises questions about billing patterns.

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 — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$32.05$9.633.33x$22.42$3.6M374.1K73
2015$30.90$9.383.29x$21.52$4.5M475.1K77
2016$31.20$9.593.25x$21.61$4.5M469.3K80
2017$38.03$12.073.15x$25.96$5.8M481.0K79
2018$37.36$11.683.20x$25.68$5.4M463.4K79
2019$34.13$10.723.18x$23.41$5.9M548.5K75
2020$39.08$12.453.14x$26.63$5.7M459.9K70
2021$41.28$12.723.25x$28.56$5.1M400.1K71
2022$35.52$10.633.34x$24.89$3.5M332.7K62
2023$33.43$9.363.57x$24.07$3.1M328.9K49

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mg⚠ 3.1x markup
$6.1M
150.9K services$40.58/svc3.08x markup
G9678Oncology care model (ocm) monthly enhanced oncology services (meos) payment for ocm enhanced services. g9678 payments may only be made to ocm practitioners for ocm beneficiaries for the furnishment of enhanced services as defined in the ocm participation a
$3.6M
22.5K services$158.01/svc2.53x markup
J9299Injection, nivolumab, 1 mg⚠ 3.1x markup
$3.1M
143.4K services$21.36/svc3.12x markup
J9035Injection, bevacizumab, 10 mg
$2.4M
43.1K services$55.34/svc2.68x markup
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj
$2.3M
62.1K services$36.64/svc3.00x markup
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg
$1.9M
56.8K services$34.09/svc2.99x markup
J2505Injection, pegfilgrastim, 6 mg
$1.9M
608 services$3.0K/svc2.72x markup
99214Established patient office or other outpatient visit, 30-39 minutes⚠ 3.1x markup
$1.8M
20.9K services$88.38/svc3.13x markup
J9355Injection, trastuzumab, 10 mg
$1.8M
25.4K services$72.31/svc2.59x markup
J0897Injection, denosumab, 1 mg
$1.8M
127.8K services$14.01/svc2.86x markup
J2357Injection, omalizumab, 5 mg
$1.7M
63.2K services$26.78/svc2.04x markup
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units
$1.6M
181.9K services$8.67/svc2.74x markup
J9310Injection, rituximab, 100 mg
$1.4M
2.3K services$617.40/svc2.51x markup
J9041Injection, bortezomib (velcade), 0.1 mg
$1.3M
37.3K services$35.67/svc2.78x markup
96413Administration of chemotherapy into vein, 1 hour or less⚠ 3.6x markup
$1.2M
10.7K services$112.26/svc3.61x markup
J9145Injection, daratumumab, 10 mg
$835.9K
20.7K services$40.44/svc2.92x markup
J9047Injection, carfilzomib, 1 mg
$744.7K
28.0K services$26.61/svc2.74x markup
J9312Injection, rituximab, 10 mg⚠ 3.2x markup
$740.0K
10.0K services$73.77/svc3.22x markup
Q0138Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use)⚠ 3.9x markup
$569.5K
826.2K services$0.69/svc3.86x markup
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg
$546.6K
4.3K services$128.61/svc2.09x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg150.9K$6.1M$40.583.08x
G9678Oncology care model (ocm) monthly enhanced oncology services (meos) payment for ocm enhanced services. g9678 payments may only be made to ocm practitioners for ocm beneficiaries for the furnishment of enhanced services as defined in the ocm participation a22.5K$3.6M$158.012.53x
J9299Injection, nivolumab, 1 mg143.4K$3.1M$21.363.12x
J9035Injection, bevacizumab, 10 mg43.1K$2.4M$55.342.68x
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj62.1K$2.3M$36.643.00x
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg56.8K$1.9M$34.092.99x
J2505Injection, pegfilgrastim, 6 mg608$1.9M$3.0K2.72x
99214Established patient office or other outpatient visit, 30-39 minutes20.9K$1.8M$88.383.13x
J9355Injection, trastuzumab, 10 mg25.4K$1.8M$72.312.59x
J0897Injection, denosumab, 1 mg127.8K$1.8M$14.012.86x
J2357Injection, omalizumab, 5 mg63.2K$1.7M$26.782.04x
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units181.9K$1.6M$8.672.74x
J9310Injection, rituximab, 100 mg2.3K$1.4M$617.402.51x
J9041Injection, bortezomib (velcade), 0.1 mg37.3K$1.3M$35.672.78x
96413Administration of chemotherapy into vein, 1 hour or less10.7K$1.2M$112.263.61x
J9145Injection, daratumumab, 10 mg20.7K$835.9K$40.442.92x
J9047Injection, carfilzomib, 1 mg28.0K$744.7K$26.612.74x
J9312Injection, rituximab, 10 mg10.0K$740.0K$73.773.22x
Q0138Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use)826.2K$569.5K$0.693.86x
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg4.3K$546.6K$128.612.09x

Markup Analysis

Charge-to-Payment Ratio

3.25x

This provider submits charges 3.25 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.25x means for every $100 Medicare pays, this provider initially charges $325. This is higher than the national average.

Location

Bonita Springs, FL

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 Hematology-Oncology providers in FL for peer comparison.

Rebecca Kosloff (you)
$47.1M
Christopher Lobo, MD⚠️
$60.5M
Maen Hussein, M.D.
$57.6M
Vikas Malhotra, M.D.
$52.8M
Andrew Lipman, M.D.⚠️
$51.1M
Syed Zafar, M.D.⚠️
$48.1M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Christopher Lobo, MDPort Charlotte, FL$60.5M⚠️ Flagged
Maen Hussein, M.D.Tavares, FL$57.6M✓ Clear
Vikas Malhotra, M.D.Spring Hill, FL$52.8M✓ Clear
Andrew Lipman, M.D.Naples, FL$51.1M⚠️ Flagged
Syed Zafar, M.D.Fort Myers, FL$48.1M⚠️ Flagged

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Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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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