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. Timothy Williams
๐ŸŽ—๏ธ
MDIndividual

Timothy Williams, M.D.

NPI: 1790731446
Delray Beach, FL
10 years of data
Radiation Oncology
$17.3M
Total Payments
28.4K
Beneficiaries
94.3K
Services
5.87x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$17.3M
Specialty median$300.5K

๐Ÿ“‹ Key Findings

1Billed $17.3M over 10 years
25.87x markup ratio (above median)
399th percentile in Radiation Oncology by payments
4Payments surged 93% in 2019
520 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $17.3M in total Medicare payments ranks in the 99th percentile of Radiation Oncology providers nationally.

Their average markup ratio of 5.87x is significantly above the specialty median of 5.0x.

Medicare payments to this provider grew 139% 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 93% 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
2014$338.30$145.212.33x$193.09$728.1K7.8K2.7K
2015$424.96$148.522.86x$276.44$698.0K7.3K2.6K
2016$438.24$115.813.78x$322.43$754.2K7.9K2.8K
2017$462.11$121.203.81x$340.91$761.0K8.7K2.7K
2018$643.62$185.963.46x$457.66$1.3M8.7K2.5K
2019$1.4K$212.796.46x$1.2K$2.4M15.8K3.2K
2020$2.0K$297.606.78x$1.7K$2.6M9.7K3.2K
2021$2.2K$306.627.01x$1.8K$3.2M10.8K3.2K
2022$2.0K$268.117.44x$1.7K$3.2M10.9K3.0K
2023$2.1K$275.657.63x$1.8K$1.7M6.7K2.5K

Top Procedures (20)

77523Proton treatment delivery, intermediateโš  6.4x markup
$6.7M
8.0K services$841.90/svc6.36x markup
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment sessionโš  5.2x markup
$2.1M
7.5K services$285.76/svc5.24x markup
77427Radiation treatment management, 5 treatmentsโš  4.7x markup
$1.2M
7.9K services$154.65/svc4.69x markup
77301Management of modulation radiotherapy planningโš  6.0x markup
$1.1M
1.6K services$672.46/svc5.99x markup
77014CT scan guidance for insertion of radiation therapy fieldsโš  5.8x markup
$876.8K
19.7K services$44.58/svc5.75x markup
77373Stereotactic body radiation therapy 1 or more lesions using imaging guidanceโš  7.0x markup
$736.2K
760 services$968.65/svc7.03x markup
77338Design and construction of device for radiation therapyโš  5.5x markup
$500.5K
2.5K services$202.63/svc5.48x markup
55874Injection of biodegradable material next to prostateโš  7.5x markup
$436.6K
175 services$2.5K/svc7.48x markup
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mevโš  5.6x markup
$432.0K
2.1K services$207.61/svc5.61x markup
G6017Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatmentโš  6.6x markup
$414.4K
5.6K services$74.65/svc6.59x markup
77336Radiation therapy consultation per weekโš  6.2x markup
$407.5K
6.1K services$66.76/svc6.24x markup
77263Management of radiation therapy, complexโš  5.3x markup
$291.6K
2.2K services$130.06/svc5.28x markup
99213Established patient office or other outpatient visit, typically 15 minutesโš  4.7x markup
$252.6K
4.5K services$56.18/svc4.67x markup
99204New patient office or other outpatient visit, typically 45 minutesโš  5.0x markup
$239.7K
1.9K services$123.71/svc5.04x markup
77418Intensity modulated radiation treatment delivery per sessionโš  3.7x markup
$208.0K
645 services$322.46/svc3.72x markup
77435Stereotactic radiation treatment management of 1 or more lesions using imaging guidance, per treatment courseโš  4.8x markup
$185.0K
352 services$525.52/svc4.77x markup
G6002Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapyโš  5.8x markup
$177.6K
6.8K services$25.99/svc5.82x markup
77334Radiation treatment devices, design and construction, complexโš  5.2x markup
$131.4K
2.6K services$51.17/svc5.17x markup
77290Management of radiation therapy, simulation, complexโš  5.1x markup
$123.0K
996 services$123.49/svc5.12x markup
77295Management of radiation therapy, 3Dโš  4.4x markup
$112.0K
597 services$187.64/svc4.41x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
77523Proton treatment delivery, intermediate8.0K$6.7M$841.906.36x
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session7.5K$2.1M$285.765.24x
77427Radiation treatment management, 5 treatments7.9K$1.2M$154.654.69x
77301Management of modulation radiotherapy planning1.6K$1.1M$672.465.99x
77014CT scan guidance for insertion of radiation therapy fields19.7K$876.8K$44.585.75x
77373Stereotactic body radiation therapy 1 or more lesions using imaging guidance760$736.2K$968.657.03x
77338Design and construction of device for radiation therapy2.5K$500.5K$202.635.48x
55874Injection of biodegradable material next to prostate175$436.6K$2.5K7.48x
G6012Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev2.1K$432.0K$207.615.61x
G6017Intra-fraction localization and tracking of target or patient motion during delivery of radiation therapy (eg,3d positional tracking, gating, 3d surface tracking), each fraction of treatment5.6K$414.4K$74.656.59x
77336Radiation therapy consultation per week6.1K$407.5K$66.766.24x
77263Management of radiation therapy, complex2.2K$291.6K$130.065.28x
99213Established patient office or other outpatient visit, typically 15 minutes4.5K$252.6K$56.184.67x
99204New patient office or other outpatient visit, typically 45 minutes1.9K$239.7K$123.715.04x
77418Intensity modulated radiation treatment delivery per session645$208.0K$322.463.72x
77435Stereotactic radiation treatment management of 1 or more lesions using imaging guidance, per treatment course352$185.0K$525.524.77x
G6002Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy6.8K$177.6K$25.995.82x
77334Radiation treatment devices, design and construction, complex2.6K$131.4K$51.175.17x
77290Management of radiation therapy, simulation, complex996$123.0K$123.495.12x
77295Management of radiation therapy, 3D597$112.0K$187.644.41x

Markup Analysis

Charge-to-Payment Ratio

5.87x

This provider submits charges 5.87 times higher than what Medicare actually pays.

What This Means

A markup ratio of 5.87x means for every $100 Medicare pays, this provider initially charges $587. This is higher than the national average.

Location

Delray Beach, 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.

Timothy Williams (you)
$17.3M
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

Related

Browse
โ† Back to Provider Directory
State
All providers in FL โ†’
Specialty
All Radiation 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