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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. Ruben Niesvizky
๐ŸŽ—๏ธ
MDIndividual

Ruben Niesvizky, MD

NPI: 1710074885
New York, NY
10 years of data
Medical Oncology
$28.3M
Total Payments
237
Beneficiaries
927.2K
Services
2.82x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$28.3M
Specialty median$262.8K

๐Ÿ“‹ Key Findings

1Billed $28.3M over 10 years
22.82x markup ratio (above median)
399th percentile in Medical Oncology by payments
4371 services/day โ€” physically implausible
5Payments surged 71% in 2016
69 procedures with >3x markup

โš ๏ธ This provider averages 371 services per working day โ€” physically unusual for an individual practitioner

Based on 927.2K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $28.3M in total Medicare payments ranks in the 99th percentile of Medical Oncology providers nationally.

Averaging 371 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 199% 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 71% 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
2014$54.03$16.873.20x$37.16$1.0M61.0K19
2015$68.85$22.743.03x$46.11$1.3M56.7K23
2016$88.08$35.372.49x$52.71$2.2M62.5K27
2017$74.24$30.962.40x$43.28$2.7M88.3K26
2018$83.77$34.642.42x$49.13$2.9M84.7K23
2019$94.02$31.902.95x$62.12$3.8M118.4K27
2020$113.98$40.012.85x$73.97$2.8M71.2K27
2021$85.27$30.822.77x$54.45$3.5M113.0K21
2022$86.71$29.392.95x$57.32$4.9M167.8K25
2023$96.31$29.673.25x$66.64$3.1M103.5K19

Top Procedures (20)

J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj
$5.8M
160.0K services$36.54/svc2.88x markup
J9145Injection, daratumumab, 10 mg
$5.2M
130.0K services$40.33/svc2.40x markup
J9047Injection, carfilzomib, 1 mg
$3.1M
120.2K services$26.06/svc2.79x markup
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg
$2.4M
76.1K services$32.05/svc2.62x markup
J9041Injection, bortezomib, 0.1 mgโš  3.4x markup
$2.1M
70.0K services$29.88/svc3.42x markup
J9999Not otherwise classified, antineoplastic drugs
$1.6M
680 services$2.3K/svc2.23x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  3.3x markup
$1.2M
8.8K services$136.67/svc3.25x markup
J0897Injection, denosumab, 1 mg
$1.1M
70.7K services$15.86/svc2.57x markup
J9037Injection, belantamab mafodotin-blmf, 0.5 mg
$815.1K
23.6K services$34.54/svc2.90x markup
G9678Oncology care model (ocm) monthly enhanced oncology services (meos) payment for ocm enhanced services. g9678 payments may only be made to ocm practitioners for ocm beneficiaries for the furnishment of enhanced services as defined in the ocm participation a
$644.4K
4.1K services$155.89/svc1.15x markup
J1561Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg
$576.0K
16.6K services$34.73/svc2.33x markup
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg
$562.7K
18.1K services$31.02/svc2.88x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  3.9x markup
$521.6K
4.1K services$128.01/svc3.91x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)โš  3.5x markup
$446.1K
156.3K services$2.85/svc3.50x markup
J2505Injection, pegfilgrastim, 6 mg
$437.3K
135 services$3.2K/svc2.42x markup
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscleโš  3.6x markup
$231.9K
3.1K services$73.61/svc3.65x markup
99213Established patient office or other outpatient visit, 20-29 minutesโš  3.5x markup
$218.3K
3.4K services$64.48/svc3.51x markup
99214Established patient office or other outpatient visit, 30-39 minutesโš  3.4x markup
$201.8K
1.9K services$104.25/svc3.37x markup
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutesโš  3.5x markup
$148.9K
1.6K services$91.38/svc3.46x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or lessโš  3.9x markup
$142.7K
2.2K services$64.97/svc3.94x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj160.0K$5.8M$36.542.88x
J9145Injection, daratumumab, 10 mg130.0K$5.2M$40.332.40x
J9047Injection, carfilzomib, 1 mg120.2K$3.1M$26.062.79x
J1568Injection, immune globulin, (octagam), intravenous, non-lyophilized (e.g., liquid), 500 mg76.1K$2.4M$32.052.62x
J9041Injection, bortezomib, 0.1 mg70.0K$2.1M$29.883.42x
J9999Not otherwise classified, antineoplastic drugs680$1.6M$2.3K2.23x
99215Established patient office or other outpatient visit, 40-54 minutes8.8K$1.2M$136.673.25x
J0897Injection, denosumab, 1 mg70.7K$1.1M$15.862.57x
J9037Injection, belantamab mafodotin-blmf, 0.5 mg23.6K$815.1K$34.542.90x
G9678Oncology care model (ocm) monthly enhanced oncology services (meos) payment for ocm enhanced services. g9678 payments may only be made to ocm practitioners for ocm beneficiaries for the furnishment of enhanced services as defined in the ocm participation a4.1K$644.4K$155.891.15x
J1561Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg16.6K$576.0K$34.732.33x
J1569Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg18.1K$562.7K$31.022.88x
96413Administration of chemotherapy into vein, 1 hour or less4.1K$521.6K$128.013.91x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)156.3K$446.1K$2.853.50x
J2505Injection, pegfilgrastim, 6 mg135$437.3K$3.2K2.42x
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle3.1K$231.9K$73.613.65x
99213Established patient office or other outpatient visit, 20-29 minutes3.4K$218.3K$64.483.51x
99214Established patient office or other outpatient visit, 30-39 minutes1.9K$201.8K$104.253.37x
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes1.6K$148.9K$91.383.46x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less2.2K$142.7K$64.973.94x

Markup Analysis

Charge-to-Payment Ratio

2.82x

This provider submits charges 2.82 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.82x means for every $100 Medicare pays, this provider initially charges $282. This is higher than the national average.

Location

New York, NY

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 Medical Oncology providers in NY for peer comparison.

Ruben Niesvizky (you)
$28.3M
Alexander Zuhoski, MDโš ๏ธ
$46.3M
Louis Avvento, MD
$36.2M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Alexander Zuhoski, MDRiverhead, NY$46.3Mโš ๏ธ Flagged
Louis Avvento, MDSouthampton, NY$36.2Mโœ“ 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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