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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.
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. Exagen Inc.
๐Ÿ”ฌ
Organization

Exagen Inc.

NPI: 1245494517
Vista, CA
10 years of data
Clinical Laboratory
$90.8M
Total Payments
206
Beneficiaries
3.3M
Services
2.43x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$90.8M
Specialty median$1.9M
Rank #85 of 232 in specialty

๐Ÿ“‹ Key Findings

1Billed $90.8M over 10 years
22.43x markup ratio (above median)
399th percentile in Clinical Laboratory by payments
4Payments surged 106% in 2022
59 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $90.8M in total Medicare payments ranks in the 99th percentile of Clinical Laboratory providers nationally.

Medicare payments to this provider grew 373% 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 106% in 2022

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$62.33$26.072.39x$36.26$3.3M127.1K16
2015$61.37$26.372.33x$35.00$4.5M168.8K17
2016$58.99$25.002.36x$33.99$6.1M242.9K17
2017$58.98$23.512.51x$35.47$7.9M335.0K21
2018$60.33$22.702.66x$37.63$8.6M378.2K20
2019$61.89$20.173.07x$41.72$9.6M474.8K20
2020$61.15$18.763.26x$42.39$7.9M422.9K21
2021$62.57$18.713.34x$43.86$8.9M478.2K26
2022$88.87$52.261.70x$36.61$18.4M352.6K25
2023$106.97$57.101.87x$49.87$15.7M274.3K23

Top Procedures (20)

0312UAnalysis of 8 igg autoantibodies and 2 cell-bound complement activation products associated with autoimmune disease, using enzyme-linked immunosorbent immunoassay (elisa), flow cytometry and indirect immunofluorescence in serum specimen or plasma and whole
$23.6M
25.2K services$935.45/svc1.16x markup
86235Measurement of antibody for assessment of autoimmune disorder, any method
$18.8M
928.2K services$20.23/svc2.00x markup
86147Cardiolipin antibody (tissue antibody) measurement
$8.1M
312.4K services$26.01/svc1.58x markup
86146Beta 2 glycoprotein 1 antibody (autoantibody) measurement
$8.1M
311.9K services$26.01/svc1.58x markup
88184Flow cytometry technique for dna or cell analysis, first markerโš  4.2x markup
$5.5M
92.7K services$59.44/svc4.20x markup
88187Flow cytometry technique for dna or cell analysis, 2 to 8 markersโš  5.0x markup
$3.7M
94.1K services$39.73/svc5.03x markup
83520Measurement of substance using immunoassay technique
$3.2M
185.6K services$17.17/svc2.23x markup
88185Flow cytometry technique for dna or cell analysis, each additional markerโš  3.7x markup
$2.5M
90.6K services$27.36/svc3.66x markup
86148Phospholipid antibody (autoimmune antibody) measurement
$2.2M
123.4K services$18.03/svc1.96x markup
86800Thyroglobulin (thyroid protein) antibody measurement
$2.2M
123.9K services$17.74/svc1.73x markup
86376Microsomal antibodies (autoantibody) measurement
$2.0M
123.7K services$16.22/svc1.88x markup
86225Measurement of dna antibody, native or double stranded
$1.7M
107.3K services$15.68/svc2.56x markup
86200Measurement of antibody for rheumatoid arthritis assessmentโš  12.1x markup
$1.5M
97.2K services$14.94/svc12.10x markup
83516Analysis of substance using immunoassay technique, multiple step methodโš  11.3x markup
$1.4M
120.9K services$11.68/svc11.28x markup
86038Screening test for autoimmune disorder
$1.4M
97.6K services$13.94/svc2.15x markup
86039Measurement of antibody for assessment of autoimmune disorder, titer
$1.3M
98.8K services$12.87/svc2.33x markup
86431Rheumatoid factor levelโš  5.0x markup
$1.2M
201.6K services$6.04/svc4.97x markup
84999Chemistry proceduresโš  3.1x markup
$698.8K
10.2K services$68.69/svc3.13x markup
86160Measurement of complement (immune system proteins), antigen,โš  4.0x markup
$695.9K
55.4K services$12.56/svc3.99x markup
83876Myeloperoxidase (white blood cell enzyme) measurementโš  3.1x markup
$371.5K
7.4K services$50.18/svc3.07x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
0312UAnalysis of 8 igg autoantibodies and 2 cell-bound complement activation products associated with autoimmune disease, using enzyme-linked immunosorbent immunoassay (elisa), flow cytometry and indirect immunofluorescence in serum specimen or plasma and whole25.2K$23.6M$935.451.16x
86235Measurement of antibody for assessment of autoimmune disorder, any method928.2K$18.8M$20.232.00x
86147Cardiolipin antibody (tissue antibody) measurement312.4K$8.1M$26.011.58x
86146Beta 2 glycoprotein 1 antibody (autoantibody) measurement311.9K$8.1M$26.011.58x
88184Flow cytometry technique for dna or cell analysis, first marker92.7K$5.5M$59.444.20x
88187Flow cytometry technique for dna or cell analysis, 2 to 8 markers94.1K$3.7M$39.735.03x
83520Measurement of substance using immunoassay technique185.6K$3.2M$17.172.23x
88185Flow cytometry technique for dna or cell analysis, each additional marker90.6K$2.5M$27.363.66x
86148Phospholipid antibody (autoimmune antibody) measurement123.4K$2.2M$18.031.96x
86800Thyroglobulin (thyroid protein) antibody measurement123.9K$2.2M$17.741.73x
86376Microsomal antibodies (autoantibody) measurement123.7K$2.0M$16.221.88x
86225Measurement of dna antibody, native or double stranded107.3K$1.7M$15.682.56x
86200Measurement of antibody for rheumatoid arthritis assessment97.2K$1.5M$14.9412.10x
83516Analysis of substance using immunoassay technique, multiple step method120.9K$1.4M$11.6811.28x
86038Screening test for autoimmune disorder97.6K$1.4M$13.942.15x
86039Measurement of antibody for assessment of autoimmune disorder, titer98.8K$1.3M$12.872.33x
86431Rheumatoid factor level201.6K$1.2M$6.044.97x
84999Chemistry procedures10.2K$698.8K$68.693.13x
86160Measurement of complement (immune system proteins), antigen,55.4K$695.9K$12.563.99x
83876Myeloperoxidase (white blood cell enzyme) measurement7.4K$371.5K$50.183.07x

Markup Analysis

Charge-to-Payment Ratio

2.43x

This provider submits charges 2.43 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.43x means for every $100 Medicare pays, this provider initially charges $243. This is higher than the national average.

Location

Vista, CA

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 CA for peer comparison.

Exagen Inc. (you)
$90.8M
Genomic Health, Inc.
$887.6M
Unilab Corporationโš ๏ธ
$868.8M
Caredx Inc.
$751.0M
Laboratory Corporation Of Americaโš ๏ธ
$592.4M
Millennium Health, Llc
$587.9M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Genomic Health, Inc.Redwood City, CA$887.6Mโœ“ Clear
Unilab CorporationWest Hills, CA$868.8Mโš ๏ธ Flagged
Caredx Inc.Brisbane, CA$751.0Mโœ“ Clear
Laboratory Corporation Of AmericaSan Diego, CA$592.4Mโš ๏ธ Flagged
Millennium Health, LlcSan Diego, CA$587.9Mโœ“ 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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