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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. John Sylvester
๐ŸŽ—๏ธ
MDIndividual

John Sylvester, M.D.

NPI: 1508880337
Lakewood Ranch, FL
10 years of data
Radiation Oncology
$26.3M
Total Payments
28.3K
Beneficiaries
149.2K
Services
5.16x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$26.3M
Specialty median$300.5K

๐Ÿ“‹ Key Findings

1Billed $26.3M over 10 years
25.16x markup ratio (above median)
399th percentile in Radiation Oncology by payments
460 services/day โ€” unusually high
520 procedures with >3x markup

This provider averages 60 services per working day

Based on 149.2K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $26.3M in total Medicare payments ranks in the 99th percentile of Radiation Oncology providers nationally.

Their average markup ratio of 5.16x is significantly above the specialty median of 5.0x.

Averaging 60 services per working day raises questions about billing patterns.

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$867.72$189.784.57x$677.94$3.2M19.7K2.9K
2015$874.92$190.514.59x$684.41$3.0M16.8K3.0K
2016$874.40$190.574.59x$683.83$2.6M15.5K2.9K
2017$934.86$193.524.83x$741.34$2.3M13.5K2.7K
2018$1.4K$273.745.03x$1.1K$2.4M13.7K2.7K
2019$1.4K$256.825.31x$1.1K$2.8M15.6K3.0K
2020$1.3K$240.995.42x$1.1K$2.5M14.0K2.8K
2021$1.4K$254.735.46x$1.1K$2.7M14.2K2.7K
2022$1.4K$236.365.75x$1.1K$2.4M12.8K2.9K
2023$1.5K$269.215.68x$1.3K$2.5M13.3K2.7K

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
$12.1M
44.1K services$274.12/svc4.84x markup
77014CT scan guidance for insertion of radiation therapy fieldsโš  7.0x markup
$4.4M
47.5K services$91.93/svc6.95x markup
77301Management of modulation radiotherapy planningโš  4.8x markup
$2.2M
1.5K services$1.5K/svc4.78x markup
77418Intensity modulated radiation treatment delivery per sessionโš  5.3x markup
$1.6M
5.4K services$298.35/svc5.27x markup
77427Radiation treatment management, 5 treatmentsโš  4.1x markup
$1.3M
9.0K services$149.59/svc4.07x markup
77338Design and construction of device for radiation therapyโš  4.3x markup
$666.3K
1.8K services$379.85/svc4.32x markup
77336Radiation therapy consultation per weekโš  4.5x markup
$603.4K
9.9K services$61.01/svc4.45x markup
55874Injection of biodegradable material next to prostateโš  5.2x markup
$548.3K
226 services$2.4K/svc5.23x markup
77300Calculation of radiation therapy doseโš  4.2x markup
$384.7K
7.5K services$51.07/svc4.21x markup
77290Management of radiation therapy, simulation, complexโš  4.6x markup
$266.3K
920 services$289.49/svc4.64x markup
77295Management of radiation therapy, 3Dโš  7.0x markup
$257.6K
692 services$372.32/svc7.04x markup
77263Management of radiation therapy, complexโš  4.4x markup
$223.6K
1.7K services$127.86/svc4.42x markup
77332Radiation treatment devices, design and construction, simpleโš  3.6x markup
$207.5K
3.7K services$55.91/svc3.63x markup
77778Application of radiation source, complexโš  5.2x markup
$192.5K
512 services$375.95/svc5.23x markup
99213Established patient office or other outpatient visit, typically 15 minutesโš  4.4x markup
$188.4K
3.5K services$54.31/svc4.38x markup
77334Radiation treatment devices, design and construction, complexโš  5.0x markup
$172.6K
1.7K services$102.68/svc5.03x markup
77280Management of radiation therapy simulation, simpleโš  3.0x markup
$169.4K
1.1K services$160.56/svc3.04x markup
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10mevโš  3.9x markup
$121.5K
635 services$191.28/svc3.86x markup
76873Ultrasound of prostateโš  4.7x markup
$112.6K
869 services$129.61/svc4.66x markup
77318Radiation therapy planโš  4.1x markup
$95.6K
326 services$293.19/svc4.11x 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 session44.1K$12.1M$274.124.84x
77014CT scan guidance for insertion of radiation therapy fields47.5K$4.4M$91.936.95x
77301Management of modulation radiotherapy planning1.5K$2.2M$1.5K4.78x
77418Intensity modulated radiation treatment delivery per session5.4K$1.6M$298.355.27x
77427Radiation treatment management, 5 treatments9.0K$1.3M$149.594.07x
77338Design and construction of device for radiation therapy1.8K$666.3K$379.854.32x
77336Radiation therapy consultation per week9.9K$603.4K$61.014.45x
55874Injection of biodegradable material next to prostate226$548.3K$2.4K5.23x
77300Calculation of radiation therapy dose7.5K$384.7K$51.074.21x
77290Management of radiation therapy, simulation, complex920$266.3K$289.494.64x
77295Management of radiation therapy, 3D692$257.6K$372.327.04x
77263Management of radiation therapy, complex1.7K$223.6K$127.864.42x
77332Radiation treatment devices, design and construction, simple3.7K$207.5K$55.913.63x
77778Application of radiation source, complex512$192.5K$375.955.23x
99213Established patient office or other outpatient visit, typically 15 minutes3.5K$188.4K$54.314.38x
77334Radiation treatment devices, design and construction, complex1.7K$172.6K$102.685.03x
77280Management of radiation therapy simulation, simple1.1K$169.4K$160.563.04x
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10mev635$121.5K$191.283.86x
76873Ultrasound of prostate869$112.6K$129.614.66x
77318Radiation therapy plan326$95.6K$293.194.11x

Markup Analysis

Charge-to-Payment Ratio

5.16x

This provider submits charges 5.16 times higher than what Medicare actually pays.

What This Means

A markup ratio of 5.16x means for every $100 Medicare pays, this provider initially charges $516. This is higher than the national average.

Location

Lakewood Ranch, 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 Radiation Oncology providers in FL for peer comparison.

John Sylvester (you)
$26.3M
Timothy Kerwin, MD
$42.2M
Scot Ackerman, MD
$37.7M
Constantine Mantz, MD
$33.8M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Timothy Kerwin, MDNaples, FL$42.2Mโœ“ Clear
Scot Ackerman, MDJacksonville, FL$37.7Mโœ“ Clear
Constantine Mantz, MDCape Coral, FL$33.8Mโœ“ Clear

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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.

Believe this data is inaccurate? Dispute this data