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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. Roy Chen
๐ŸŽ—๏ธ
MDIndividual

Roy Chen, MD

NPI: 1720248081
Riverhead, NY
9 years of data
Hematology-Oncology
$22.3M
Total Payments
659
Beneficiaries
2.6M
Services
4.3x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$22.3M
Specialty median$339.6K

๐Ÿ“‹ Key Findings

1Billed $22.3M over 9 years
24.3x markup ratio (above median)
3Risk score: 70 โ€” flagged for review
499th percentile in Hematology-Oncology by payments
51.2K services/day โ€” physically implausible
6Payments surged 339% in 2016

โš ๏ธ Flagged for Review

Risk Score: 70
  • 51x specialty median spending
  • Markup 11.3x (specialty median: 4.0x)
  • 68x specialty median beneficiaries
  • 401x specialty median services
View Deep Dives โ†’Report Fraud โ†’

Statistical flag only โ€” not an accusation of fraud

โš ๏ธ This provider averages 1.2K services per working day โ€” physically unusual for an individual practitioner

Based on 2.6M total services over 9 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $22.3M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

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

Medicare payments to this provider grew 1222% from 2015 to 2023.

This provider has been statistically flagged with a risk score of 70/100. 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

๐Ÿ“ˆ

Notable: Payments increased 339% in 2016

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
2015$23.05$9.512.42x$13.54$250.6K26.4K36
2016$21.29$8.252.58x$13.04$1.1M133.4K57
2017$26.59$9.732.73x$16.86$924.3K95.0K59
2018$37.42$8.324.50x$29.10$2.3M270.5K79
2019$32.74$7.804.20x$24.94$3.6M461.9K87
2020$39.57$9.224.29x$30.35$3.4M372.2K83
2021$37.61$7.534.99x$30.08$3.5M460.3K90
2022$39.65$8.564.63x$31.09$4.0M467.6K82
2023$42.72$9.874.33x$32.85$3.3M335.7K86

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mg
$4.8M
119.0K services$40.68/svc2.28x markup
99214Established patient office or other outpatient visit, 30-39 minutesโš  3.6x markup
$1.5M
14.7K services$105.00/svc3.59x markup
J0897Injection, denosumab, 1 mgโš  4.8x markup
$1.4M
89.3K services$15.94/svc4.80x markup
88185Flow cytometry technique for dna or cell analysis, each additional markerโš  4.1x markup
$1.4M
48.2K services$28.47/svc4.14x markup
J1439Injection, ferric carboxymaltose, 1 mgโš  6.7x markup
$901.3K
1.0M services$0.86/svc6.73x markup
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mgโš  3.4x markup
$748.2K
23.1K services$32.34/svc3.40x markup
J2796Injection, romiplostim, 10 micrograms
$716.3K
12.1K services$59.03/svc2.38x markup
J2505Injection, pegfilgrastim, 6 mgโš  4.0x markup
$691.8K
214 services$3.2K/svc4.03x markup
J9035Injection, bevacizumab, 10 mg
$660.9K
10.6K services$62.41/svc2.08x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  5.7x markup
$627.7K
4.1K services$151.48/svc5.74x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  3.7x markup
$539.1K
4.0K services$136.44/svc3.74x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)โš  7.4x markup
$520.8K
193.5K services$2.69/svc7.43x markup
J9145Injection, daratumumab, 10 mg
$512.6K
12.0K services$42.71/svc2.11x markup
J9299Injection, nivolumab, 1 mg
$491.8K
21.4K services$22.96/svc2.61x markup
J1454Injection, fosnetupitant 235 mg and palonosetron 0.25 mgโš  4.7x markup
$432.0K
1.1K services$387.14/svc4.70x markup
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutesโš  3.6x markup
$412.0K
4.3K services$95.61/svc3.62x markup
J0885Injection, epoetin alfa, (for non-esrd use), 1000 unitsโš  4.5x markup
$337.2K
34.4K services$9.80/svc4.47x markup
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
$295.5K
6.5K services$45.47/svc2.82x markup
99205New patient office or other outpatient visit, 60-74 minutesโš  3.4x markup
$260.5K
1.4K services$189.42/svc3.42x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell countโš  11.9x markup
$253.1K
30.9K services$8.20/svc11.89x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg119.0K$4.8M$40.682.28x
99214Established patient office or other outpatient visit, 30-39 minutes14.7K$1.5M$105.003.59x
J0897Injection, denosumab, 1 mg89.3K$1.4M$15.944.80x
88185Flow cytometry technique for dna or cell analysis, each additional marker48.2K$1.4M$28.474.14x
J1439Injection, ferric carboxymaltose, 1 mg1.0M$901.3K$0.866.73x
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg23.1K$748.2K$32.343.40x
J2796Injection, romiplostim, 10 micrograms12.1K$716.3K$59.032.38x
J2505Injection, pegfilgrastim, 6 mg214$691.8K$3.2K4.03x
J9035Injection, bevacizumab, 10 mg10.6K$660.9K$62.412.08x
99215Established patient office or other outpatient visit, 40-54 minutes4.1K$627.7K$151.485.74x
96413Administration of chemotherapy into vein, 1 hour or less4.0K$539.1K$136.443.74x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)193.5K$520.8K$2.697.43x
J9145Injection, daratumumab, 10 mg12.0K$512.6K$42.712.11x
J9299Injection, nivolumab, 1 mg21.4K$491.8K$22.962.61x
J1454Injection, fosnetupitant 235 mg and palonosetron 0.25 mg1.1K$432.0K$387.144.70x
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes4.3K$412.0K$95.613.62x
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units34.4K$337.2K$9.804.47x
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month6.5K$295.5K$45.472.82x
99205New patient office or other outpatient visit, 60-74 minutes1.4K$260.5K$189.423.42x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count30.9K$253.1K$8.2011.89x

Markup Analysis

Charge-to-Payment Ratio

4.3x

This provider submits charges 4.3 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.3x means for every $100 Medicare pays, this provider initially charges $430. This is higher than the national average.

Location

Riverhead, NY

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

  • 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.

Believe this data is inaccurate? Dispute this data