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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. William Grow
🎗️
MDIndividual

William Grow, M.D.

NPI: 1407804578
Winter Park, FL
10 years of data
Hematology-Oncology
$25.0M
Total Payments
538
Beneficiaries
1.8M
Services
3.22x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$25.0M
Specialty median$339.6K

📋 Key Findings

1Billed $25.0M over 10 years
23.22x markup ratio (above median)
399th percentile in Hematology-Oncology by payments
4730 services/day — physically implausible
512 procedures with >3x markup

⚠️ This provider averages 730 services per working day — physically unusual for an individual practitioner

Based on 1.8M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $25.0M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 730 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 136% from 2014 to 2023.

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$20.37$7.872.59x$12.50$1.2M157.9K43
2015$24.57$9.072.71x$15.50$1.5M168.6K49
2016$36.19$10.123.58x$26.07$2.2M219.2K54
2017$61.98$19.953.11x$42.03$2.7M132.9K55
2018$61.70$18.953.26x$42.75$3.4M177.1K61
2019$40.82$12.573.25x$28.25$3.3M261.4K62
2020$43.52$13.093.32x$30.43$2.5M187.8K60
2021$45.86$13.583.38x$32.28$2.4M178.6K61
2022$50.20$15.393.26x$34.81$2.9M188.9K58
2023$62.85$19.233.27x$43.62$2.9M152.5K35

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mg⚠ 3.1x markup
$6.0M
148.2K services$40.28/svc3.09x markup
J9299Injection, nivolumab, 1 mg⚠ 3.1x markup
$3.3M
152.5K services$21.53/svc3.13x markup
J2505Injection, pegfilgrastim, 6 mg
$1.8M
588 services$3.0K/svc2.75x markup
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj⚠ 3.1x markup
$1.5M
42.3K services$35.15/svc3.13x markup
J9310Injection, rituximab, 100 mg
$1.3M
2.2K services$623.70/svc2.31x markup
J0897Injection, denosumab, 1 mg
$1.3M
91.6K services$14.40/svc2.67x markup
99214Established patient office or other outpatient visit, 30-39 minutes⚠ 3.1x markup
$986.3K
11.4K services$86.45/svc3.11x markup
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units
$942.8K
117.4K services$8.03/svc2.94x markup
96413Administration of chemotherapy into vein, 1 hour or less⚠ 3.6x markup
$727.1K
7.0K services$104.41/svc3.60x markup
J9312Injection, rituximab, 10 mg⚠ 3.2x markup
$575.5K
7.7K services$74.46/svc3.21x markup
99213Established patient office or other outpatient visit, 20-29 minutes⚠ 3.4x markup
$509.3K
8.9K services$56.98/svc3.35x markup
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg
$477.1K
13.3K services$35.99/svc2.99x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)⚠ 3.3x markup
$448.8K
151.8K services$2.96/svc3.27x markup
J9999Not otherwise classified, antineoplastic drugs⚠ 5.0x markup
$325.2K
32.7K services$9.94/svc5.04x markup
J9041Injection, bortezomib (velcade), 0.1 mg
$302.3K
8.4K services$35.79/svc2.63x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count⚠ 3.4x markup
$257.0K
29.0K services$8.86/svc3.37x markup
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg
$238.6K
2.1K services$112.56/svc1.89x markup
80053Blood test, comprehensive group of blood chemicals⚠ 3.4x markup
$209.5K
17.8K services$11.79/svc3.44x markup
J9217Leuprolide acetate (for depot suspension), 7.5 mg⚠ 4.5x markup
$195.2K
1.2K services$163.45/svc4.54x 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
$177.6K
1.1K services$157.33/svc2.54x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg148.2K$6.0M$40.283.09x
J9299Injection, nivolumab, 1 mg152.5K$3.3M$21.533.13x
J2505Injection, pegfilgrastim, 6 mg588$1.8M$3.0K2.75x
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj42.3K$1.5M$35.153.13x
J9310Injection, rituximab, 100 mg2.2K$1.3M$623.702.31x
J0897Injection, denosumab, 1 mg91.6K$1.3M$14.402.67x
99214Established patient office or other outpatient visit, 30-39 minutes11.4K$986.3K$86.453.11x
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units117.4K$942.8K$8.032.94x
96413Administration of chemotherapy into vein, 1 hour or less7.0K$727.1K$104.413.60x
J9312Injection, rituximab, 10 mg7.7K$575.5K$74.463.21x
99213Established patient office or other outpatient visit, 20-29 minutes8.9K$509.3K$56.983.35x
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg13.3K$477.1K$35.992.99x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)151.8K$448.8K$2.963.27x
J9999Not otherwise classified, antineoplastic drugs32.7K$325.2K$9.945.04x
J9041Injection, bortezomib (velcade), 0.1 mg8.4K$302.3K$35.792.63x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count29.0K$257.0K$8.863.37x
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg2.1K$238.6K$112.561.89x
80053Blood test, comprehensive group of blood chemicals17.8K$209.5K$11.793.44x
J9217Leuprolide acetate (for depot suspension), 7.5 mg1.2K$195.2K$163.454.54x
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 a1.1K$177.6K$157.332.54x

Markup Analysis

Charge-to-Payment Ratio

3.22x

This provider submits charges 3.22 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.22x means for every $100 Medicare pays, this provider initially charges $322. This is higher than the national average.

Location

Winter Park, 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.

William Grow (you)
$25.0M
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.

Believe this data is inaccurate? Dispute this data