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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. Shariar Cohen-Gadol
⚕️
MDIndividual

Shariar Cohen-Gadol, M.D.

NPI: 1013054865
Thousand Oaks, CA
10 years of data
Rheumatology
$49.5M
Total Payments
525
Beneficiaries
3.0M
Services
3.02x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$49.5M
Specialty median$352.6K
Rank #7 of 32 in specialty

📋 Key Findings

1Billed $49.5M over 10 years
23.02x markup ratio (above median)
3Risk score: 67 — flagged for review
499th percentile in Rheumatology by payments
51.2K services/day — physically implausible
6Payments surged 65% in 2015

⚠️ Flagged for Review

Risk Score: 67
  • 104x specialty median spending
  • Markup 10.6x (specialty median: 3.9x)
  • 19x specialty median beneficiaries
  • 537x specialty median services
View Deep Dives →Report Fraud →

Statistical flag only — not an accusation of fraud

⚠️ This provider averages 1.2K services per working day — physically unusual for an individual practitioner

Based on 3.0M total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $49.5M in total Medicare payments ranks in the 99th percentile of Rheumatology providers nationally.

Averaging 1.2K services per working day raises questions about billing patterns.

Medicare payments to this provider grew 203% from 2014 to 2023.

This provider has been statistically flagged with a risk score of 67/100. Statistical flags are not accusations of fraud.

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 2015

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$45.80$15.143.03x$30.66$2.0M134.3K53
2015$49.07$16.542.97x$32.53$3.4M202.8K55
2016$46.40$15.832.93x$30.57$4.2M263.2K58
2017$41.14$15.572.64x$25.57$4.0M255.8K54
2018$46.78$17.232.72x$29.55$5.0M287.7K60
2019$68.17$23.452.91x$44.72$5.9M251.6K53
2020$63.36$20.503.09x$42.86$5.9M287.1K46
2021$61.90$19.483.18x$42.42$6.4M328.3K45
2022$42.35$13.213.21x$29.14$6.6M501.1K53
2023$37.94$11.663.25x$26.28$6.2M529.2K48

Top Procedures (20)

J0897Injection, denosumab, 1 mg
$6.0M
407.0K services$14.76/svc2.82x 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)
$5.5M
1.1M services$5.25/svc2.66x markup
J9312Injection, rituximab, 10 mg⚠ 3.6x markup
$5.5M
78.8K services$69.70/svc3.57x markup
J1602Injection, golimumab, 1 mg, for intravenous use⚠ 3.5x markup
$4.6M
314.4K services$14.59/svc3.48x markup
J1745Injection, infliximab, excludes biosimilar, 10 mg
$4.1M
76.3K services$53.71/svc2.92x 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)
$3.2M
83.6K services$37.81/svc2.85x markup
J3111Injection, romosozumab-aqqg, 1 mg
$2.9M
377.8K services$7.60/svc2.65x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$2.6M
28.6K services$92.03/svc2.50x markup
J3357Ustekinumab, for subcutaneous injection, 1 mg
$2.3M
16.0K services$145.83/svc2.75x markup
J9310Injection, rituximab, 100 mg
$2.2M
3.6K services$627.44/svc2.48x markup
99215Established patient office or other outpatient visit, 40-54 minutes
$1.3M
10.2K services$126.72/svc2.52x markup
J3262Injection, tocilizumab, 1 mg⚠ 3.0x markup
$1.1M
290.1K services$3.76/svc3.04x markup
20611Aspiration and/or injection of fluid large joint using ultrasound guidance
$773.0K
9.7K services$79.58/svc2.84x markup
J7322Hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg⚠ 3.3x markup
$672.6K
31.9K services$21.09/svc3.32x markup
76881Complete ultrasound scan of joint⚠ 3.9x markup
$571.8K
6.2K services$91.55/svc3.90x markup
J7326Hyaluronan or derivative, gel-one, for intra-articular injection, per dose
$522.0K
828 services$630.38/svc2.39x markup
96413Administration of chemotherapy into vein, 1 hour or less
$509.1K
4.1K services$124.52/svc2.90x markup
99205New patient office or other outpatient visit, 60-74 minutes
$496.5K
2.9K services$169.90/svc2.63x markup
37241Occlusion of venous malformations (other than hemorrhage) with radiological supervision and interpretation, roadmapping, and imaging guidance
$481.6K
115 services$4.2K/svc2.87x markup
J7323Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose
$356.8K
3.1K services$115.59/svc2.58x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J0897Injection, denosumab, 1 mg407.0K$6.0M$14.762.82x
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$5.5M$5.252.66x
J9312Injection, rituximab, 10 mg78.8K$5.5M$69.703.57x
J1602Injection, golimumab, 1 mg, for intravenous use314.4K$4.6M$14.593.48x
J1745Injection, infliximab, excludes biosimilar, 10 mg76.3K$4.1M$53.712.92x
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)83.6K$3.2M$37.812.85x
J3111Injection, romosozumab-aqqg, 1 mg377.8K$2.9M$7.602.65x
99214Established patient office or other outpatient visit, 30-39 minutes28.6K$2.6M$92.032.50x
J3357Ustekinumab, for subcutaneous injection, 1 mg16.0K$2.3M$145.832.75x
J9310Injection, rituximab, 100 mg3.6K$2.2M$627.442.48x
99215Established patient office or other outpatient visit, 40-54 minutes10.2K$1.3M$126.722.52x
J3262Injection, tocilizumab, 1 mg290.1K$1.1M$3.763.04x
20611Aspiration and/or injection of fluid large joint using ultrasound guidance9.7K$773.0K$79.582.84x
J7322Hyaluronan or derivative, hymovis, for intra-articular injection, 1 mg31.9K$672.6K$21.093.32x
76881Complete ultrasound scan of joint6.2K$571.8K$91.553.90x
J7326Hyaluronan or derivative, gel-one, for intra-articular injection, per dose828$522.0K$630.382.39x
96413Administration of chemotherapy into vein, 1 hour or less4.1K$509.1K$124.522.90x
99205New patient office or other outpatient visit, 60-74 minutes2.9K$496.5K$169.902.63x
37241Occlusion of venous malformations (other than hemorrhage) with radiological supervision and interpretation, roadmapping, and imaging guidance115$481.6K$4.2K2.87x
J7323Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose3.1K$356.8K$115.592.58x

Markup Analysis

Charge-to-Payment Ratio

3.02x

This provider submits charges 3.02 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.02x means for every $100 Medicare pays, this provider initially charges $302. This is higher than the national average.

Location

Thousand Oaks, 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 Rheumatology providers in CA for peer comparison.

Shariar Cohen-Gadol (you)
$49.5M
Barry Eibschutz, M.D.
$55.8M
Gerald Ho, M.D.
$45.8M
Arash Horizon, M.D.
$45.0M
Daniel Watrous, M.D.
$41.6M
Eric Lee, M.D.
$37.5M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Barry Eibschutz, M.D.San Luis Obispo, CA$55.8M✓ Clear
Gerald Ho, M.D.La Palma, CA$45.8M✓ Clear
Arash Horizon, M.D.Los Angeles, CA$45.0M✓ Clear
Daniel Watrous, M.D.Visalia, CA$41.6M✓ Clear
Eric Lee, M.D.Upland, CA$37.5M✓ Clear

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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