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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. Mathew Williams
๐Ÿ”ช
MDIndividual

Mathew Williams, M.D.

NPI: 1790715324
New York, NY
10 years of data
Thoracic Surgery
$4.3M
Total Payments
8.6K
Beneficiaries
8.7K
Services
9.82x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.3M
Specialty median$71.0K

๐Ÿ“‹ Key Findings

1Billed $4.3M over 10 years
29.82x markup ratio (above median)
399th percentile in Thoracic Surgery by payments
419 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.3M in total Medicare payments ranks in the 99th percentile of Thoracic Surgery providers nationally.

Their average markup ratio of 9.82x is significantly above the specialty median of 4.7x.

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$4.7K$655.377.16x$4.0K$481.0K791789
2015$7.0K$838.768.34x$6.2K$345.1K663618
2016$4.7K$537.768.75x$4.2K$348.7K1.0K969
2017$6.6K$780.618.49x$5.8K$434.4K966945
2018$7.9K$941.758.40x$7.0K$492.1K885882
2019$8.6K$998.378.57x$7.6K$579.0K1.0K1.0K
2020$7.7K$656.9811.65x$7.0K$366.8K713713
2021$7.3K$627.4411.62x$6.7K$388.6K811807
2022$10.8K$987.8310.94x$9.8K$488.2K905900
2023$8.2K$674.4612.18x$7.5K$403.1K898895

Top Procedures (20)

33361Replacement of aortic valve with prosthetic valve, accessed through the skinโš  12.3x markup
$1.9M
2.4K services$784.41/svc12.32x markup
33418Replacement of aortic valve with prosthetic valve accessed through the skinโš  8.1x markup
$801.2K
505 services$1.6K/svc8.06x markup
99204New patient office or other outpatient visit, typically 45 minutesโš  5.6x markup
$492.1K
3.3K services$148.98/svc5.62x markup
33405Replacement of left lower heart chamber valve using artificial valve on heart-lung machineโš  9.4x markup
$473.6K
251 services$1.9K/svc9.40x markup
33430Replacement of valve between left upper and lower chambers on heart-lung machineโš  8.2x markup
$226.9K
86 services$2.6K/svc8.15x markup
92986Catheter based repair of left lower heart (aortic) valve, accessed through the skinโš  5.8x markup
$135.0K
112 services$1.2K/svc5.75x markup
33419Replacement of aortic valve with prosthetic valve accessed through the skinโš  15.5x markup
$89.5K
233 services$384.16/svc15.49x markup
99214Established patient office or other outpatient, visit typically 25 minutesโš  4.9x markup
$32.6K
326 services$100.14/svc4.91x markup
99213Established patient office or other outpatient visit, typically 15 minutesโš  4.6x markup
$27.4K
398 services$68.82/svc4.64x markup
99205New patient office or other outpatient visit, typically 60 minutes
$25.5K
142 services$179.70/svc2.50x markup
99203New patient office or other outpatient visit, typically 30 minutesโš  5.5x markup
$24.0K
245 services$98.01/svc5.52x markup
93456Insertion of catheter in right heart for X-ray imaging of blood vessels or graftsโš  16.6x markup
$23.5K
78 services$301.04/svc16.58x markup
33426Insertion of artificial valve between left heart chambers on heart-lung machineโš  11.9x markup
$22.4K
13 services$1.7K/svc11.91x markup
33464Repair of heart valve between right chambers with insertion of prosthetic valve ringโš  10.5x markup
$22.1K
11 services$2.0K/svc10.47x markup
33496Repair of artificial heart valve on heart-lung machineโš  9.3x markup
$17.1K
11 services$1.6K/svc9.29x markup
33533Heart artery bypass to repair one arteryโš  13.2x markup
$14.1K
16 services$880.57/svc13.22x markup
99212Established patient office or other outpatient visit, typically 10 minutesโš  3.8x markup
$13.8K
355 services$38.99/svc3.83x markup
33530Reoperation of heart artery bypass or valve procedure more than 1 month after original operationโš  5.0x markup
$11.9K
25 services$475.57/svc4.96x markup
99215Established patient office or other outpatient, visit typically 40 minutesโš  5.0x markup
$11.4K
91 services$124.83/svc4.97x markup
92928Catheter insertion of stents in major coronary artery or branch, accessed through the skinโš  10.0x markup
$7.0K
17 services$411.53/svc10.04x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
33361Replacement of aortic valve with prosthetic valve, accessed through the skin2.4K$1.9M$784.4112.32x
33418Replacement of aortic valve with prosthetic valve accessed through the skin505$801.2K$1.6K8.06x
99204New patient office or other outpatient visit, typically 45 minutes3.3K$492.1K$148.985.62x
33405Replacement of left lower heart chamber valve using artificial valve on heart-lung machine251$473.6K$1.9K9.40x
33430Replacement of valve between left upper and lower chambers on heart-lung machine86$226.9K$2.6K8.15x
92986Catheter based repair of left lower heart (aortic) valve, accessed through the skin112$135.0K$1.2K5.75x
33419Replacement of aortic valve with prosthetic valve accessed through the skin233$89.5K$384.1615.49x
99214Established patient office or other outpatient, visit typically 25 minutes326$32.6K$100.144.91x
99213Established patient office or other outpatient visit, typically 15 minutes398$27.4K$68.824.64x
99205New patient office or other outpatient visit, typically 60 minutes142$25.5K$179.702.50x
99203New patient office or other outpatient visit, typically 30 minutes245$24.0K$98.015.52x
93456Insertion of catheter in right heart for X-ray imaging of blood vessels or grafts78$23.5K$301.0416.58x
33426Insertion of artificial valve between left heart chambers on heart-lung machine13$22.4K$1.7K11.91x
33464Repair of heart valve between right chambers with insertion of prosthetic valve ring11$22.1K$2.0K10.47x
33496Repair of artificial heart valve on heart-lung machine11$17.1K$1.6K9.29x
33533Heart artery bypass to repair one artery16$14.1K$880.5713.22x
99212Established patient office or other outpatient visit, typically 10 minutes355$13.8K$38.993.83x
33530Reoperation of heart artery bypass or valve procedure more than 1 month after original operation25$11.9K$475.574.96x
99215Established patient office or other outpatient, visit typically 40 minutes91$11.4K$124.834.97x
92928Catheter insertion of stents in major coronary artery or branch, accessed through the skin17$7.0K$411.5310.04x

Markup Analysis

Charge-to-Payment Ratio

9.82x

This provider submits charges 9.82 times higher than what Medicare actually pays.

What This Means

A markup ratio of 9.82x means for every $100 Medicare pays, this provider initially charges $982. This is higher than the national average.

Location

New York, NY

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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