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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. Etan Marks
๐Ÿ”ฌ
DOIndividual

Etan Marks, D.O.

NPI: 1528301728
Delray Beach, FL
5 years of data
Pathology
$5.4M
Total Payments
108.6K
Beneficiaries
144.9K
Services
3.96x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$5.4M
Specialty median$84.1K

๐Ÿ“‹ Key Findings

1Billed $5.4M over 5 years
23.96x markup ratio (above median)
399th percentile in Pathology by payments
4116 services/day โ€” unusually high
5Payments surged 335% in 2021
64 procedures with >3x markup

This provider averages 116 services per working day

Based on 144.9K total services over 5 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $5.4M in total Medicare payments ranks in the 99th percentile of Pathology providers nationally.

Averaging 116 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 1079% from 2019 to 2023.

71% of their billing comes from a single procedure code (88305 โ€” Pathology examination of tissue using a microscope, intermediate complexity).

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 335% in 2021

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
2019$51.80$23.282.23x$28.52$157.2K5.2K4.7K
2020$72.52$31.792.28x$40.73$339.8K10.5K9.1K
2021$122.89$59.742.06x$63.15$1.5M38.4K28.2K
2022$125.15$62.382.01x$62.77$1.6M40.7K30.4K
2023$310.00$66.044.69x$243.96$1.9M50.0K36.3K

Top Procedures (9)

88305Pathology examination of tissue using a microscope, intermediate complexityโš  4.3x markup
$3.9M
116.0K services$33.21/svc4.34x markup
88342Tissue or cell analysis by immunologic techniqueโš  3.0x markup
$824.2K
14.6K services$56.64/svc3.05x markup
88312Special stained specimen slides to identify organisms including interpretation and report
$397.7K
5.8K services$69.14/svc2.83x markup
88304Pathology examination of tissue using a microscope, moderately low complexityโš  4.2x markup
$128.1K
5.2K services$24.73/svc4.15x markup
88341Special stained specimen slides to examine tissue
$118.4K
2.3K services$51.40/svc2.60x markup
88346Antibody evaluation, initial single antibody stain procedure
$41.4K
390 services$106.07/svc2.44x markup
88350Antibody evaluation, each additional single antibody stain procedure
$30.9K
390 services$79.26/svc2.37x markup
88313Special stained specimen slides to examine tissue including interpretation and report
$19.1K
346 services$55.12/svc2.78x markup
88344Special stained specimen slides to examine tissue, each multiplex procedureโš  4.7x markup
$1.4K
12 services$113.75/svc4.68x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
88305Pathology examination of tissue using a microscope, intermediate complexity116.0K$3.9M$33.214.34x
88342Tissue or cell analysis by immunologic technique14.6K$824.2K$56.643.05x
88312Special stained specimen slides to identify organisms including interpretation and report5.8K$397.7K$69.142.83x
88304Pathology examination of tissue using a microscope, moderately low complexity5.2K$128.1K$24.734.15x
88341Special stained specimen slides to examine tissue2.3K$118.4K$51.402.60x
88346Antibody evaluation, initial single antibody stain procedure390$41.4K$106.072.44x
88350Antibody evaluation, each additional single antibody stain procedure390$30.9K$79.262.37x
88313Special stained specimen slides to examine tissue including interpretation and report346$19.1K$55.122.78x
88344Special stained specimen slides to examine tissue, each multiplex procedure12$1.4K$113.754.68x

Markup Analysis

Charge-to-Payment Ratio

3.96x

This provider submits charges 3.96 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.96x means for every $100 Medicare pays, this provider initially charges $396. 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 Pathology providers in FL for peer comparison.

Etan Marks (you)
$5.4M
Ryan Olson, MDโš ๏ธ
$54.3M
Wilfredo Blasini, M.D.โš ๏ธ
$35.8M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Ryan Olson, MDFort Myers, FL$54.3Mโš ๏ธ Flagged
Wilfredo Blasini, M.D.Fort Myers, FL$35.8Mโš ๏ธ Flagged

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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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