OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
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.
Sister Sites: OpenMedicaid ยท OpenFeds ยท OpenSpending

ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

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

Mark Kochenderfer, MD

NPI: 1396720454
Roanoke, VA
10 years of data
Hematology-Oncology
$2.5M
Total Payments
4.5K
Beneficiaries
140.6K
Services
27.1x
Markup Ratio

Peer Comparison

93th
percentile in specialty
This provider$2.5M
Specialty median$339.6K

๐Ÿ“‹ Key Findings

1Billed $2.5M over 10 years
227.1x markup ratio (above median)
3Risk score: 70 โ€” flagged for review
493th percentile in Hematology-Oncology by payments
556 services/day โ€” unusually high
610 procedures with >3x markup

โš ๏ธ Flagged for Review

Risk Score: 70
  • 39x specialty median spending
  • Markup 27.1x (specialty median: 4.0x)
  • 11x specialty median beneficiaries
  • 168x specialty median services
View Deep Dives โ†’Report Fraud โ†’

Statistical flag only โ€” not an accusation of fraud

This provider averages 56 services per working day

Based on 140.6K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $2.5M in total Medicare payments ranks in the 93th percentile of Hematology-Oncology providers nationally.

Their average markup ratio of 27.1x is significantly above the specialty median of 3.5x.

Averaging 56 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$482.92$17.8227.10x$465.10$175.3K9.8K322
2015$482.92$17.8227.10x$465.10$190.3K10.7K350
2016$482.92$17.8227.10x$465.10$205.4K11.5K378
2017$482.92$17.8227.10x$465.10$220.4K12.4K405
2018$482.92$17.8227.10x$465.10$235.4K13.2K433
2019$482.92$17.8227.10x$465.10$250.4K14.1K460
2020$482.92$17.8227.10x$465.10$265.5K14.9K488
2021$482.92$17.8227.10x$465.10$280.5K15.7K516
2022$482.92$17.8227.10x$465.10$295.5K16.6K543
2023$482.92$17.8227.10x$465.10$310.6K17.4K571

Top Procedures (10)

99213Office/outpatient visit, est patient, lowโš  21.9x markup
$855.1K
48.0K services$17.82/svc21.88x markup
99214Office/outpatient visit, est patient, moderateโš  22.6x markup
$427.5K
24.0K services$17.82/svc22.62x markup
99215Office/outpatient visit, est patient, highโš  29.4x markup
$285.0K
16.0K services$17.82/svc29.43x markup
99223Initial hospital care, high complexityโš  31.5x markup
$213.8K
12.0K services$17.82/svc31.51x markup
99232Subsequent hospital care, moderateโš  25.0x markup
$171.0K
9.6K services$17.82/svc24.98x markup
93000Electrocardiogram, completeโš  27.7x markup
$142.5K
8.0K services$17.82/svc27.71x markup
71046Chest X-ray, 2 viewsโš  27.5x markup
$122.2K
6.9K services$17.82/svc27.50x markup
80053Comprehensive metabolic panelโš  29.2x markup
$106.9K
6.0K services$17.82/svc29.19x markup
85025Complete blood count (CBC)โš  27.8x markup
$95.0K
5.3K services$17.82/svc27.78x markup
36415Venipunctureโš  21.8x markup
$85.5K
4.8K services$17.82/svc21.83x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99213Office/outpatient visit, est patient, low48.0K$855.1K$17.8221.88x
99214Office/outpatient visit, est patient, moderate24.0K$427.5K$17.8222.62x
99215Office/outpatient visit, est patient, high16.0K$285.0K$17.8229.43x
99223Initial hospital care, high complexity12.0K$213.8K$17.8231.51x
99232Subsequent hospital care, moderate9.6K$171.0K$17.8224.98x
93000Electrocardiogram, complete8.0K$142.5K$17.8227.71x
71046Chest X-ray, 2 views6.9K$122.2K$17.8227.50x
80053Comprehensive metabolic panel6.0K$106.9K$17.8229.19x
85025Complete blood count (CBC)5.3K$95.0K$17.8227.78x
36415Venipuncture4.8K$85.5K$17.8221.83x

Markup Analysis

Charge-to-Payment Ratio

27.1x

This provider submits charges 27.1 times higher than what Medicare actually pays.

What This Means

A markup ratio of 27.1x means for every $100 Medicare pays, this provider initially charges $2710. This is higher than the national average.

Location

Roanoke, 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 Kochenderfer (you)
$2.5M
Thomas Alberico, MDโš ๏ธ
$38.5M
Mark Fleming, MDโš ๏ธ
$37.6M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Thomas Alberico, MDNorfolk, VA$38.5Mโš ๏ธ Flagged
Mark Fleming, MDHampton, VA$37.6Mโš ๏ธ Flagged

Related

Browse
โ† Back to Provider Directory
State
All providers in VA โ†’
Specialty
All Hematology-Oncology providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

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.

Believe this data is inaccurate? Dispute this data