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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. Mark Fleming
๐ŸŽ—๏ธ
MDIndividual

Mark Fleming, MD

NPI: 1457383663
Hampton, VA
10 years of data
Hematology-Oncology
$37.6M
Total Payments
560
Beneficiaries
2.4M
Services
4.96x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$37.6M
Specialty median$339.6K
Rank #36 of 60 in specialty

๐Ÿ“‹ Key Findings

1Billed $37.6M over 10 years
24.96x markup ratio (above median)
3Risk score: 69 โ€” flagged for review
499th percentile in Hematology-Oncology by payments
5965 services/day โ€” physically implausible
6Payments surged 53% in 2016

โš ๏ธ Flagged for Review

Risk Score: 69
  • 60x specialty median spending
  • Markup 17.8x (specialty median: 4.0x)
  • 16x specialty median beneficiaries
  • 214x specialty median services
View Deep Dives โ†’Report Fraud โ†’

Statistical flag only โ€” not an accusation of fraud

โš ๏ธ This provider averages 965 services per working day โ€” physically unusual for an individual practitioner

Based on 2.4M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $37.6M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 965 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 131% from 2014 to 2023.

This provider has been statistically flagged with a risk score of 69/100. 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

๐Ÿ“ˆ

Notable: Payments increased 53% in 2016

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

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$44.47$8.375.31x$36.10$1.7M200.3K54
2015$43.14$7.385.85x$35.76$1.7M228.7K53
2016$64.21$13.104.90x$51.11$2.6M196.8K59
2017$84.23$17.584.79x$66.65$3.5M197.1K60
2018$78.64$15.035.23x$63.61$3.7M246.8K55
2019$76.75$15.135.07x$61.62$4.3M283.9K56
2020$88.22$18.114.87x$70.11$5.2M286.2K58
2021$86.82$19.244.51x$67.58$6.2M321.5K56
2022$90.21$18.284.93x$71.93$5.0M271.6K58
2023$109.40$21.625.06x$87.78$3.9M179.3K51

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mgโš  3.4x markup
$12.4M
303.8K services$40.69/svc3.36x markup
J9299Injection, nivolumab, 1 mgโš  3.4x markup
$6.1M
280.3K services$21.75/svc3.35x markup
J2505Injection, pegfilgrastim, 6 mgโš  5.0x markup
$3.8M
1.2K services$3.2K/svc4.98x 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
$1.5M
9.3K services$157.98/svc1.01x markup
J0897Injection, denosumab, 1 mgโš  3.6x markup
$1.4M
98.4K services$13.89/svc3.65x markup
J9999Not otherwise classified, antineoplastic drugsโš  3.3x markup
$1.1M
4.2K services$255.67/svc3.30x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$1.0M
12.1K services$84.56/svc2.94x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)โš  7.2x markup
$1.0M
354.6K services$2.84/svc7.22x markup
J9217Leuprolide acetate (for depot suspension), 7.5 mgโš  19.3x markup
$986.4K
6.1K services$162.53/svc19.28x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  6.6x markup
$920.4K
8.6K services$107.04/svc6.61x markup
J9043Injection, cabazitaxel, 1 mgโš  3.6x markup
$801.0K
5.5K services$146.71/svc3.59x markup
99215Established patient office or other outpatient visit, 40-54 minutes
$483.7K
4.2K services$115.24/svc2.87x markup
J2469Injection, palonosetron hcl, 25 mcgโš  11.6x markup
$418.7K
40.6K services$10.30/svc11.55x markup
J9310Injection, rituximab, 100 mgโš  3.3x markup
$395.5K
694 services$569.87/svc3.33x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$389.5K
6.8K services$57.09/svc2.94x markup
80053Blood test, comprehensive group of blood chemicalsโš  5.3x markup
$344.7K
29.2K services$11.80/svc5.25x markup
J9035Injection, bevacizumab, 10 mgโš  3.4x markup
$343.5K
6.5K services$53.10/svc3.37x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell countโš  4.0x markup
$294.2K
33.2K services$8.87/svc3.95x markup
Q5120Injection, pegfilgrastim-bmez, biosimilar, (ziextenzo), 0.5 mgโš  4.9x markup
$267.8K
1.5K services$180.73/svc4.89x markup
J9041Injection, bortezomib (velcade), 0.1 mgโš  3.5x markup
$228.4K
6.4K services$35.87/svc3.46x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg303.8K$12.4M$40.693.36x
J9299Injection, nivolumab, 1 mg280.3K$6.1M$21.753.35x
J2505Injection, pegfilgrastim, 6 mg1.2K$3.8M$3.2K4.98x
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 a9.3K$1.5M$157.981.01x
J0897Injection, denosumab, 1 mg98.4K$1.4M$13.893.65x
J9999Not otherwise classified, antineoplastic drugs4.2K$1.1M$255.673.30x
99214Established patient office or other outpatient visit, 30-39 minutes12.1K$1.0M$84.562.94x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)354.6K$1.0M$2.847.22x
J9217Leuprolide acetate (for depot suspension), 7.5 mg6.1K$986.4K$162.5319.28x
96413Administration of chemotherapy into vein, 1 hour or less8.6K$920.4K$107.046.61x
J9043Injection, cabazitaxel, 1 mg5.5K$801.0K$146.713.59x
99215Established patient office or other outpatient visit, 40-54 minutes4.2K$483.7K$115.242.87x
J2469Injection, palonosetron hcl, 25 mcg40.6K$418.7K$10.3011.55x
J9310Injection, rituximab, 100 mg694$395.5K$569.873.33x
99213Established patient office or other outpatient visit, 20-29 minutes6.8K$389.5K$57.092.94x
80053Blood test, comprehensive group of blood chemicals29.2K$344.7K$11.805.25x
J9035Injection, bevacizumab, 10 mg6.5K$343.5K$53.103.37x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count33.2K$294.2K$8.873.95x
Q5120Injection, pegfilgrastim-bmez, biosimilar, (ziextenzo), 0.5 mg1.5K$267.8K$180.734.89x
J9041Injection, bortezomib (velcade), 0.1 mg6.4K$228.4K$35.873.46x

Markup Analysis

Charge-to-Payment Ratio

4.96x

This provider submits charges 4.96 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.96x means for every $100 Medicare pays, this provider initially charges $496. This is higher than the national average.

Location

Hampton, VA

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 VA for peer comparison.

Mark Fleming (you)
$37.6M
Thomas Alberico, MDโš ๏ธ
$38.5M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Thomas Alberico, MDNorfolk, VA$38.5Mโš ๏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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