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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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Methodology•Download Data
  1. Home
  2. Providers
  3. Mark Harris
⚕️
MDIndividual

Mark Harris, M.D.

NPI: 1437157872
Wilmington, NC
10 years of data
Rheumatology
$25.9M
Total Payments
382
Beneficiaries
1.5M
Services
2.18x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$25.9M
Specialty median$352.6K

📋 Key Findings

1Billed $25.9M over 10 years
22.18x markup ratio (above median)
399th percentile in Rheumatology by payments
4591 services/day — physically implausible
56 procedures with >3x markup

⚠️ This provider averages 591 services per working day — physically unusual for an individual practitioner

Based on 1.5M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $25.9M in total Medicare payments ranks in the 99th percentile of Rheumatology providers nationally.

Averaging 591 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 53% 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

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$31.38$17.311.81x$14.07$1.9M111.7K31
2015$31.55$17.661.79x$13.89$2.1M121.5K29
2016$25.83$14.031.84x$11.80$2.3M166.0K38
2017$43.93$21.732.02x$22.20$2.5M116.9K38
2018$56.67$26.542.14x$30.13$2.5M92.8K40
2019$71.98$34.882.06x$37.10$2.5M72.8K40
2020$40.23$19.022.12x$21.21$3.1M165.2K35
2021$36.79$15.692.34x$21.10$3.0M190.1K43
2022$38.91$14.722.64x$24.19$2.9M198.4K45
2023$33.35$12.222.73x$21.13$3.0M241.5K43

Top Procedures (20)

J0129Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
$12.5M
345.0K services$36.27/svc1.96x markup
J1745Injection, infliximab, excludes biosimilar, 10 mg
$5.0M
95.2K services$52.89/svc2.29x markup
J0717Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
$2.0M
367.2K services$5.31/svc2.44x markup
J3262Injection, tocilizumab, 1 mg
$1.8M
432.1K services$4.05/svc1.65x markup
J1602Injection, golimumab, 1 mg, for intravenous use⚠ 3.1x markup
$1.5M
117.4K services$13.14/svc3.09x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$758.6K
9.8K services$77.60/svc1.93x markup
96413Administration of chemotherapy into vein, 1 hour or less⚠ 3.1x markup
$755.4K
7.4K services$102.06/svc3.13x markup
J0897Injection, denosumab, 1 mg
$345.1K
22.7K services$15.22/svc1.77x markup
86235Measurement of antibody for assessment of autoimmune disorder, any method
$156.0K
7.4K services$20.94/svc1.67x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$141.7K
2.9K services$49.35/svc1.93x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count⚠ 3.3x markup
$91.3K
10.2K services$8.94/svc3.29x markup
82306Vitamin d-3 level
$80.0K
2.3K services$35.27/svc1.79x markup
Q5104Injection, infliximab-abda, biosimilar, (renflexis), 10 mg
$68.7K
2.3K services$29.85/svc2.85x markup
86481Tuberculosis test, enumeration of t-cells
$62.4K
635 services$98.30/svc1.27x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
$56.8K
1.0K services$54.32/svc2.58x markup
80076Liver function blood test panel⚠ 7.5x markup
$56.4K
7.0K services$8.04/svc7.47x markup
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
$52.1K
959 services$54.31/svc2.21x markup
99204New patient office or other outpatient visit, 45-59 minutes
$45.4K
397 services$114.44/svc1.58x markup
86140Measurement c-reactive protein for detection of infection or inflammation⚠ 8.0x markup
$40.5K
7.2K services$5.66/svc7.95x markup
82565Blood creatinine level⚠ 4.5x markup
$34.8K
7.4K services$4.70/svc4.47x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J0129Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)345.0K$12.5M$36.271.96x
J1745Injection, infliximab, excludes biosimilar, 10 mg95.2K$5.0M$52.892.29x
J0717Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)367.2K$2.0M$5.312.44x
J3262Injection, tocilizumab, 1 mg432.1K$1.8M$4.051.65x
J1602Injection, golimumab, 1 mg, for intravenous use117.4K$1.5M$13.143.09x
99214Established patient office or other outpatient visit, 30-39 minutes9.8K$758.6K$77.601.93x
96413Administration of chemotherapy into vein, 1 hour or less7.4K$755.4K$102.063.13x
J0897Injection, denosumab, 1 mg22.7K$345.1K$15.221.77x
86235Measurement of antibody for assessment of autoimmune disorder, any method7.4K$156.0K$20.941.67x
99213Established patient office or other outpatient visit, 20-29 minutes2.9K$141.7K$49.351.93x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count10.2K$91.3K$8.943.29x
82306Vitamin d-3 level2.3K$80.0K$35.271.79x
Q5104Injection, infliximab-abda, biosimilar, (renflexis), 10 mg2.3K$68.7K$29.852.85x
86481Tuberculosis test, enumeration of t-cells635$62.4K$98.301.27x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less1.0K$56.8K$54.322.58x
80076Liver function blood test panel7.0K$56.4K$8.047.47x
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle959$52.1K$54.312.21x
99204New patient office or other outpatient visit, 45-59 minutes397$45.4K$114.441.58x
86140Measurement c-reactive protein for detection of infection or inflammation7.2K$40.5K$5.667.95x
82565Blood creatinine level7.4K$34.8K$4.704.47x

Markup Analysis

Charge-to-Payment Ratio

2.18x

This provider submits charges 2.18 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.18x means for every $100 Medicare pays, this provider initially charges $218. This is higher than the national average.

Location

Wilmington, NC

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

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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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