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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. Gregory Maggass
๐ŸŽ—๏ธ
MDIndividual

Gregory Maggass, MD

NPI: 1124093539
Scottsdale, AZ
10 years of data
Radiation Oncology
$13.0M
Total Payments
225
Beneficiaries
64.9K
Services
3.24x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$13.0M
Specialty median$300.5K

๐Ÿ“‹ Key Findings

1Billed $13.0M over 10 years
23.24x markup ratio (above median)
399th percentile in Radiation Oncology by payments
4Payments surged 254% in 2022
55 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $13.0M in total Medicare payments ranks in the 99th percentile of Radiation Oncology providers nationally.

Medicare payments to this provider grew 481% 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

๐Ÿ“ˆ

Notable: Payments increased 254% in 2022

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$544.19$180.723.01x$363.47$695.6K3.8K23
2015$707.04$185.583.81x$521.46$920.5K5.0K20
2016$728.52$181.604.01x$546.92$744.2K4.1K23
2017$726.14$190.913.80x$535.23$1.1M5.7K22
2018$756.24$196.993.84x$559.25$806.7K4.1K30
2019$776.20$199.103.90x$577.10$846.0K4.2K27
2020$761.40$197.473.86x$563.93$500.8K2.5K18
2021$772.40$199.033.88x$573.37$739.8K3.7K19
2022$717.56$245.852.92x$471.71$2.6M10.6K22
2023$500.54$191.852.61x$308.69$4.0M21.1K21

Top Procedures (20)

A9607Lutetium lu 177 vipivotide tetraxetan, therapeutic, 1 millicurie
$4.7M
24.3K services$192.04/svc2.34x markup
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment sessionโš  5.7x markup
$2.3M
8.3K services$279.29/svc5.72x markup
77014Ct guidance for insertion of radiation therapy fieldsโš  3.8x markup
$954.8K
10.3K services$92.89/svc3.77x markup
77301High precision radiation therapy planning
$830.7K
564 services$1.5K/svc2.82x markup
A9699Radiopharmaceutical, therapeutic, not otherwise classified
$607.8K
16 services$38.0K/svc2.37x markup
77427Radiation treatment management, 5 treatment sessions
$504.0K
3.4K services$146.38/svc2.58x markup
77373Cranial lesion surgery using radiation over multiple sessions
$315.1K
315 services$1.0K/svc2.87x markup
77290Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved
$297.1K
761 services$390.40/svc2.42x markup
77338Design and construction of radiation treatment device for high precision radiation therapy
$227.1K
602 services$377.16/svc2.45x markup
G6013Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 11-19 mev
$225.4K
1.2K services$194.68/svc2.53x markup
77418Intensity modulated radiation treatment delivery per sessionโš  3.1x markup
$221.7K
729 services$304.14/svc3.15x markup
77336Continuing radiation therapy consultation per weekโš  3.3x markup
$218.1K
3.5K services$61.46/svc3.26x markup
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev
$211.9K
1.1K services$196.04/svc2.48x markup
77280Obtaining data needed to develop the optimal radiation treatment, 1 treatment area
$165.8K
782 services$212.06/svc2.41x markup
99205New patient office or other outpatient visit, 60-74 minutes
$144.5K
894 services$161.58/svc2.41x markup
55874Injection of biodegradable material next to prostate
$135.9K
51 services$2.7K/svc2.91x markup
77300Calculation of radiation therapy dose
$113.5K
2.2K services$50.99/svc2.61x markup
77263Complex radiation therapy planning
$105.0K
825 services$127.27/svc2.48x markup
77334Design and construction of complex radiation treatment device
$95.9K
929 services$103.24/svc2.86x markup
77470Special radiation treatmentโš  7.1x markup
$69.8K
620 services$112.64/svc7.10x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
A9607Lutetium lu 177 vipivotide tetraxetan, therapeutic, 1 millicurie24.3K$4.7M$192.042.34x
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session8.3K$2.3M$279.295.72x
77014Ct guidance for insertion of radiation therapy fields10.3K$954.8K$92.893.77x
77301High precision radiation therapy planning564$830.7K$1.5K2.82x
A9699Radiopharmaceutical, therapeutic, not otherwise classified16$607.8K$38.0K2.37x
77427Radiation treatment management, 5 treatment sessions3.4K$504.0K$146.382.58x
77373Cranial lesion surgery using radiation over multiple sessions315$315.1K$1.0K2.87x
77290Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved761$297.1K$390.402.42x
77338Design and construction of radiation treatment device for high precision radiation therapy602$227.1K$377.162.45x
G6013Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 11-19 mev1.2K$225.4K$194.682.53x
77418Intensity modulated radiation treatment delivery per session729$221.7K$304.143.15x
77336Continuing radiation therapy consultation per week3.5K$218.1K$61.463.26x
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev1.1K$211.9K$196.042.48x
77280Obtaining data needed to develop the optimal radiation treatment, 1 treatment area782$165.8K$212.062.41x
99205New patient office or other outpatient visit, 60-74 minutes894$144.5K$161.582.41x
55874Injection of biodegradable material next to prostate51$135.9K$2.7K2.91x
77300Calculation of radiation therapy dose2.2K$113.5K$50.992.61x
77263Complex radiation therapy planning825$105.0K$127.272.48x
77334Design and construction of complex radiation treatment device929$95.9K$103.242.86x
77470Special radiation treatment620$69.8K$112.647.10x

Markup Analysis

Charge-to-Payment Ratio

3.24x

This provider submits charges 3.24 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.24x means for every $100 Medicare pays, this provider initially charges $324. This is higher than the national average.

Location

Scottsdale, AZ

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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