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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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Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. David Zaenger
๐ŸŽ—๏ธ
MDIndividual

David Zaenger, MD

NPI: 1245593235
Myrtle Beach, SC
6 years of data
Radiation Oncology
$13.3M
Total Payments
14.8K
Beneficiaries
70.5K
Services
5.32x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$13.3M
Specialty median$300.5K

๐Ÿ“‹ Key Findings

1Billed $13.3M over 6 years
25.32x markup ratio (above median)
399th percentile in Radiation Oncology by payments
4Payments surged 434% in 2019
520 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $13.3M in total Medicare payments ranks in the 99th percentile of Radiation Oncology providers nationally.

Their average markup ratio of 5.32x is significantly above the specialty median of 5.0x.

Medicare payments to this provider grew 469% from 2018 to 2023.

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 434% in 2019

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
2018$1.4K$260.095.20x$1.1K$395.9K2.4K609
2019$1.3K$249.795.24x$1.1K$2.1M11.8K2.4K
2020$1.2K$227.225.20x$955.43$2.7M14.1K2.9K
2021$1.3K$245.525.18x$1.0K$3.2M15.9K3.3K
2022$1.3K$240.765.35x$1.0K$2.7M14.2K2.9K
2023$1.2K$227.155.49x$1.0K$2.3M12.1K2.6K

Top Procedures (20)

G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment sessionโš  4.8x markup
$6.2M
23.6K services$263.68/svc4.85x markup
77014CT scan guidance for insertion of radiation therapy fieldsโš  7.3x markup
$2.1M
23.1K services$89.58/svc7.27x markup
77301Management of modulation radiotherapy planningโš  5.1x markup
$1.6M
1.1K services$1.4K/svc5.13x markup
77373Stereotactic body radiation therapy 1 or more lesions using imaging guidanceโš  6.6x markup
$744.9K
918 services$811.45/svc6.64x markup
77427Radiation treatment management, 5 treatmentsโš  4.5x markup
$679.5K
4.7K services$144.40/svc4.49x markup
77338Design and construction of device for radiation therapyโš  4.6x markup
$412.7K
1.2K services$355.19/svc4.60x markup
77336Radiation therapy consultation per weekโš  4.5x markup
$310.8K
5.3K services$58.75/svc4.45x markup
77280Management of radiation therapy simulation, simpleโš  4.2x markup
$171.5K
836 services$205.20/svc4.19x markup
77263Management of radiation therapy, complexโš  4.7x markup
$153.6K
1.3K services$121.02/svc4.67x markup
77334Radiation treatment devices, design and construction, complexโš  5.6x markup
$120.5K
1.3K services$92.97/svc5.64x markup
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mevโš  4.2x markup
$118.0K
622 services$189.65/svc4.19x markup
77300Calculation of radiation therapy doseโš  4.5x markup
$105.9K
2.1K services$49.54/svc4.54x markup
77435Stereotactic radiation treatment management of 1 or more lesions using imaging guidance, per treatment courseโš  4.7x markup
$95.1K
193 services$492.50/svc4.69x markup
77293Respiratory motion management simulationโš  4.3x markup
$70.7K
216 services$327.20/svc4.35x markup
77768High dose brachytherapy through skin surface, 2 channels or more than 2.0 cmโš  4.3x markup
$66.4K
247 services$268.84/svc4.28x markup
77290Management of radiation therapy, simulation, complexโš  4.9x markup
$64.4K
176 services$365.95/svc4.92x markup
77767High dose brachytherapy through skin surface, 1 channel or up to 2.0 cmโš  4.2x markup
$58.8K
334 services$176.03/svc4.18x markup
99204New patient office or other outpatient visit, typically 45 minutesโš  4.4x markup
$55.9K
459 services$121.83/svc4.42x markup
99205New patient outpatient visit, total time 60-74 minutesโš  4.1x markup
$41.8K
255 services$163.93/svc4.10x markup
77295Management of radiation therapy, 3Dโš  8.6x markup
$31.9K
87 services$366.70/svc8.59x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session23.6K$6.2M$263.684.85x
77014CT scan guidance for insertion of radiation therapy fields23.1K$2.1M$89.587.27x
77301Management of modulation radiotherapy planning1.1K$1.6M$1.4K5.13x
77373Stereotactic body radiation therapy 1 or more lesions using imaging guidance918$744.9K$811.456.64x
77427Radiation treatment management, 5 treatments4.7K$679.5K$144.404.49x
77338Design and construction of device for radiation therapy1.2K$412.7K$355.194.60x
77336Radiation therapy consultation per week5.3K$310.8K$58.754.45x
77280Management of radiation therapy simulation, simple836$171.5K$205.204.19x
77263Management of radiation therapy, complex1.3K$153.6K$121.024.67x
77334Radiation treatment devices, design and construction, complex1.3K$120.5K$92.975.64x
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev622$118.0K$189.654.19x
77300Calculation of radiation therapy dose2.1K$105.9K$49.544.54x
77435Stereotactic radiation treatment management of 1 or more lesions using imaging guidance, per treatment course193$95.1K$492.504.69x
77293Respiratory motion management simulation216$70.7K$327.204.35x
77768High dose brachytherapy through skin surface, 2 channels or more than 2.0 cm247$66.4K$268.844.28x
77290Management of radiation therapy, simulation, complex176$64.4K$365.954.92x
77767High dose brachytherapy through skin surface, 1 channel or up to 2.0 cm334$58.8K$176.034.18x
99204New patient office or other outpatient visit, typically 45 minutes459$55.9K$121.834.42x
99205New patient outpatient visit, total time 60-74 minutes255$41.8K$163.934.10x
77295Management of radiation therapy, 3D87$31.9K$366.708.59x

Markup Analysis

Charge-to-Payment Ratio

5.32x

This provider submits charges 5.32 times higher than what Medicare actually pays.

What This Means

A markup ratio of 5.32x means for every $100 Medicare pays, this provider initially charges $532. This is higher than the national average.

Location

Myrtle Beach, SC

Provider Verification

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

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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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