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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. Erin Arnold
⚕️
MDIndividual

Erin Arnold, MD

NPI: 1093767733
Skokie, IL
10 years of data
Rheumatology
$28.6M
Total Payments
363
Beneficiaries
2.3M
Services
3.49x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$28.6M
Specialty median$352.6K

📋 Key Findings

1Billed $28.6M over 10 years
23.49x markup ratio (above median)
399th percentile in Rheumatology by payments
4927 services/day — physically implausible
5Payments surged 65% in 2017
66 procedures with >3x markup

⚠️ This provider averages 927 services per working day — physically unusual for an individual practitioner

Based on 2.3M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $28.6M in total Medicare payments ranks in the 99th percentile of Rheumatology providers nationally.

Averaging 927 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 164% 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

📈

Notable: Payments increased 65% in 2017

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 — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$40.09$14.142.84x$25.95$1.2M86.3K33
2015$44.72$16.702.68x$28.02$1.6M95.7K31
2016$34.96$13.292.63x$21.67$1.9M145.9K37
2017$50.62$15.623.24x$35.00$3.2M205.1K34
2018$49.86$15.993.12x$33.87$3.4M214.7K40
2019$46.87$15.173.09x$31.70$3.7M246.8K40
2020$44.68$13.073.42x$31.61$3.4M256.7K37
2021$41.18$11.733.51x$29.45$3.7M312.2K42
2022$41.24$9.114.53x$32.13$3.3M358.7K38
2023$38.93$8.164.77x$30.77$3.2M395.0K31

Top Procedures (20)

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)⚠ 3.3x markup
$6.0M
1.1M services$5.35/svc3.28x markup
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)
$4.9M
134.1K services$36.33/svc2.20x markup
J1745Injection, infliximab, excludes biosimilar, 10 mg⚠ 5.3x markup
$4.8M
100.7K services$47.38/svc5.25x markup
J1602Injection, golimumab, 1 mg, for intravenous use⚠ 5.1x markup
$3.5M
250.0K services$14.05/svc5.12x markup
J3262Injection, tocilizumab, 1 mg
$1.6M
385.1K services$4.21/svc2.81x markup
J0897Injection, denosumab, 1 mg
$1.5M
98.9K services$15.06/svc2.17x markup
J7325Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg
$1.0M
108.9K services$9.28/svc1.93x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$728.4K
8.2K services$88.80/svc2.16x markup
76881Complete ultrasound scan of joint⚠ 5.2x markup
$594.8K
8.8K services$67.91/svc5.23x markup
96413Administration of chemotherapy into vein, 1 hour or less
$540.7K
4.7K services$114.05/svc2.84x markup
J9312Injection, rituximab, 10 mg
$490.8K
6.8K services$72.18/svc2.00x markup
J7327Hyaluronan or derivative, monovisc, for intra-articular injection, per dose
$449.7K
642 services$700.43/svc2.06x markup
99215Established patient outpatient visit, total time 40-54 minutes
$384.9K
3.4K services$114.45/svc2.18x markup
20611Aspiration and/or injection of fluid large joint using ultrasound guidance⚠ 5.2x markup
$367.6K
4.4K services$83.29/svc5.19x markup
97110Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes
$258.9K
12.7K services$20.43/svc2.96x markup
J3304Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg
$215.7K
15.1K services$14.25/svc1.75x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$213.3K
3.6K services$59.17/svc2.29x markup
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
$158.4K
2.6K services$61.99/svc2.51x markup
99204New patient office or other outpatient visit, 45-59 minutes
$111.7K
868 services$128.73/svc2.22x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less⚠ 5.2x markup
$94.8K
1.6K services$60.75/svc5.20x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
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)1.1M$6.0M$5.353.28x
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)134.1K$4.9M$36.332.20x
J1745Injection, infliximab, excludes biosimilar, 10 mg100.7K$4.8M$47.385.25x
J1602Injection, golimumab, 1 mg, for intravenous use250.0K$3.5M$14.055.12x
J3262Injection, tocilizumab, 1 mg385.1K$1.6M$4.212.81x
J0897Injection, denosumab, 1 mg98.9K$1.5M$15.062.17x
J7325Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg108.9K$1.0M$9.281.93x
99214Established patient office or other outpatient visit, 30-39 minutes8.2K$728.4K$88.802.16x
76881Complete ultrasound scan of joint8.8K$594.8K$67.915.23x
96413Administration of chemotherapy into vein, 1 hour or less4.7K$540.7K$114.052.84x
J9312Injection, rituximab, 10 mg6.8K$490.8K$72.182.00x
J7327Hyaluronan or derivative, monovisc, for intra-articular injection, per dose642$449.7K$700.432.06x
99215Established patient outpatient visit, total time 40-54 minutes3.4K$384.9K$114.452.18x
20611Aspiration and/or injection of fluid large joint using ultrasound guidance4.4K$367.6K$83.295.19x
97110Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes12.7K$258.9K$20.432.96x
J3304Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg15.1K$215.7K$14.251.75x
99213Established patient office or other outpatient visit, 20-29 minutes3.6K$213.3K$59.172.29x
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle2.6K$158.4K$61.992.51x
99204New patient office or other outpatient visit, 45-59 minutes868$111.7K$128.732.22x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less1.6K$94.8K$60.755.20x

Markup Analysis

Charge-to-Payment Ratio

3.49x

This provider submits charges 3.49 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.49x means for every $100 Medicare pays, this provider initially charges $349. This is higher than the national average.

Location

Skokie, IL

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.

Believe this data is inaccurate? Dispute this data