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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. Dianon Systems, Inc
๐Ÿ”ฌ
Organization

Dianon Systems, Inc

NPI: 1962480608
Shelton, CT
10 years of data
Clinical Laboratory
$71.6M
Total Payments
319
Beneficiaries
1.4M
Services
2.58x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$71.6M
Specialty median$1.9M
Rank #105 of 232 in specialty

๐Ÿ“‹ Key Findings

1Billed $71.6M over 10 years
22.58x markup ratio (above median)
399th percentile in Clinical Laboratory by payments
47 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $71.6M in total Medicare payments ranks in the 99th percentile of Clinical Laboratory providers nationally.

This provider's billing patterns fall within normal ranges for their specialty.

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$112.32$46.072.44x$66.25$8.7M189.6K35
2015$115.73$48.352.39x$67.38$9.2M189.6K37
2016$127.74$54.312.35x$73.43$9.8M179.6K39
2017$130.03$51.952.50x$78.08$7.8M151.0K36
2018$132.64$51.142.59x$81.50$7.3M143.0K35
2019$135.23$50.772.66x$84.46$6.5M127.4K27
2020$137.65$49.602.78x$88.05$5.5M109.9K27
2021$144.51$53.112.72x$91.40$6.4M120.9K28
2022$148.67$53.122.80x$95.55$5.5M103.6K28
2023$159.40$52.803.02x$106.60$4.9M92.9K27

Top Procedures (20)

88305Pathology examination of tissue using a microscope, intermediate complexity
$29.4M
774.8K services$38.00/svc2.84x markup
88120Cell examination of urine, manual
$10.9M
25.2K services$435.16/svc1.80x markup
88313Special stained specimen slides to examine tissue including interpretation and report
$5.1M
102.6K services$49.64/svc2.06x markup
88342Special stained specimen slides to examine tissue, initial procedure
$4.4M
72.0K services$61.46/svc2.37x markup
G0416Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any methodโš  4.4x markup
$3.1M
9.7K services$317.75/svc4.41x markup
88185Flow cytometry technique for DNA or cell analysis
$2.7M
66.1K services$40.36/svc1.56x markup
88312Special stained specimen slides to identify organisms including interpretation and report
$1.9M
31.6K services$60.63/svc1.74x markup
88341Special stained specimen slides to examine tissue, each additional procedureโš  3.2x markup
$1.7M
30.5K services$56.72/svc3.19x markup
88108Cell examination of specimen, concentration technique
$1.7M
36.0K services$47.06/svc1.82x markup
88112Cell examination of specimen, selective cellular enhancement techniqueโš  4.2x markup
$1.5M
35.6K services$43.25/svc4.17x markup
88121Cell examination of urine, computer-assisted
$1.2M
2.8K services$409.51/svc2.07x markup
88173Evaluation of fine needle aspirate with interpretation and report
$969.0K
11.2K services$86.36/svc1.78x markup
88344Special stained specimen slides to examine tissue, each multiplex procedureโš  3.3x markup
$744.4K
6.6K services$112.99/svc3.33x markup
88304Pathology examination of tissue using a microscope, moderately low complexityโš  3.1x markup
$650.1K
23.7K services$27.44/svc3.07x markup
88271DNA testing for genetic defectsโš  4.6x markup
$530.3K
18.8K services$28.18/svc4.57x markup
82232Beta-2 microglobulin (protein) levelโš  6.2x markup
$503.1K
25.3K services$19.90/svc6.24x markup
88350Antibody evaluation, each additional single antibody stain procedure
$476.3K
7.7K services$61.89/svc1.87x markup
88323Surgical pathology consultation and report on referred material requiring preparation of slides
$398.5K
5.9K services$68.10/svc2.11x markup
88346Antibody evaluation, initial single antibody stain procedure
$347.5K
5.3K services$65.48/svc1.71x markup
88189Flow cytometry technique for DNA or cell analysis
$322.6K
3.7K services$86.64/svc2.39x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
88305Pathology examination of tissue using a microscope, intermediate complexity774.8K$29.4M$38.002.84x
88120Cell examination of urine, manual25.2K$10.9M$435.161.80x
88313Special stained specimen slides to examine tissue including interpretation and report102.6K$5.1M$49.642.06x
88342Special stained specimen slides to examine tissue, initial procedure72.0K$4.4M$61.462.37x
G0416Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method9.7K$3.1M$317.754.41x
88185Flow cytometry technique for DNA or cell analysis66.1K$2.7M$40.361.56x
88312Special stained specimen slides to identify organisms including interpretation and report31.6K$1.9M$60.631.74x
88341Special stained specimen slides to examine tissue, each additional procedure30.5K$1.7M$56.723.19x
88108Cell examination of specimen, concentration technique36.0K$1.7M$47.061.82x
88112Cell examination of specimen, selective cellular enhancement technique35.6K$1.5M$43.254.17x
88121Cell examination of urine, computer-assisted2.8K$1.2M$409.512.07x
88173Evaluation of fine needle aspirate with interpretation and report11.2K$969.0K$86.361.78x
88344Special stained specimen slides to examine tissue, each multiplex procedure6.6K$744.4K$112.993.33x
88304Pathology examination of tissue using a microscope, moderately low complexity23.7K$650.1K$27.443.07x
88271DNA testing for genetic defects18.8K$530.3K$28.184.57x
82232Beta-2 microglobulin (protein) level25.3K$503.1K$19.906.24x
88350Antibody evaluation, each additional single antibody stain procedure7.7K$476.3K$61.891.87x
88323Surgical pathology consultation and report on referred material requiring preparation of slides5.9K$398.5K$68.102.11x
88346Antibody evaluation, initial single antibody stain procedure5.3K$347.5K$65.481.71x
88189Flow cytometry technique for DNA or cell analysis3.7K$322.6K$86.642.39x

Markup Analysis

Charge-to-Payment Ratio

2.58x

This provider submits charges 2.58 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.58x means for every $100 Medicare pays, this provider initially charges $258. This is higher than the national average.

Location

Shelton, CT

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 Clinical Laboratory providers in CT for peer comparison.

Dianon Systems, Inc (you)
$71.6M
Quest Diagnostics Llc
$45.8M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Quest Diagnostics LlcWallingford, CT$45.8Mโœ“ 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.

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