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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. James Berenson
๐ŸŽ—๏ธ
MDIndividual

James Berenson, M.D.

NPI: 1124051560
West Hollywood, CA
10 years of data
Hematology-Oncology
$29.5M
Total Payments
321
Beneficiaries
2.2M
Services
3.18x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$29.5M
Specialty median$339.6K

๐Ÿ“‹ Key Findings

1Billed $29.5M over 10 years
23.18x markup ratio (above median)
399th percentile in Hematology-Oncology by payments
4880 services/day โ€” physically implausible
513 procedures with >3x markup

โš ๏ธ This provider averages 880 services per working day โ€” physically unusual for an individual practitioner

Based on 2.2M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $29.5M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 880 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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$50.81$14.153.59x$36.66$2.6M182.1K31
2015$52.09$14.803.52x$37.29$2.2M149.2K34
2016$56.70$15.743.60x$40.96$1.7M106.8K29
2017$53.37$16.043.33x$37.33$2.5M157.0K32
2018$47.27$16.022.95x$31.25$3.2M200.9K33
2019$37.82$13.202.87x$24.62$3.2M239.6K33
2020$36.65$12.542.92x$24.11$3.0M239.2K33
2021$39.51$12.353.20x$27.16$3.4M273.8K31
2022$36.45$12.352.95x$24.10$3.8M307.6K33
2023$37.26$11.463.25x$25.80$3.9M344.5K32

Top Procedures (20)

J9041Injection, bortezomib, 0.1 mgโš  3.6x markup
$5.9M
195.2K services$30.33/svc3.59x markup
J9047Injection, carfilzomib, 1 mg
$5.7M
204.1K services$28.17/svc1.66x markup
J9176Injection, elotuzumab, 1 mg
$3.4M
650.6K services$5.19/svc1.54x markup
J9145Injection, daratumumab, 10 mg
$2.3M
58.4K services$39.44/svc1.57x markup
J9227Injection, isatuximab-irfc, 10 mg
$1.6M
28.8K services$54.39/svc2.16x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  3.4x markup
$1.4M
11.3K services$127.39/svc3.42x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  4.2x markup
$1.3M
10.1K services$124.38/svc4.22x markup
J0897Injection, denosumab, 1 mg
$1.2M
72.2K services$15.97/svc1.50x markup
Q2050Injection, doxorubicin hydrochloride, liposomal, not otherwise specified, 10 mgโš  5.0x markup
$1.0M
3.9K services$256.85/svc5.02x markup
J9044Injection, bortezomib, not otherwise specified, 0.1 mgโš  6.9x markup
$592.3K
37.4K services$15.85/svc6.93x markup
J9033Injection, bendamustine hcl (treanda), 1 mgโš  3.6x markup
$448.4K
32.5K services$13.81/svc3.57x markup
96367Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or lessโš  5.1x markup
$421.7K
15.4K services$27.35/svc5.12x markup
J0885Injection, epoetin alfa, (for non-esrd use), 1000 unitsโš  4.3x markup
$353.4K
36.7K services$9.63/svc4.30x markup
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or lessโš  5.1x markup
$333.1K
5.4K services$61.94/svc5.08x markup
96409Administration of chemotherapy into vein using push techniqueโš  3.8x markup
$318.9K
3.3K services$97.40/svc3.78x markup
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj
$314.5K
8.3K services$37.67/svc2.05x markup
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
$300.7K
4.4K services$68.50/svc2.00x markup
J3489Injection, zoledronic acid, 1 mgโš  22.5x markup
$287.9K
16.2K services$17.80/svc22.47x markup
80053Blood test, comprehensive group of blood chemicalsโš  5.5x markup
$220.3K
18.7K services$11.76/svc5.53x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell countโš  4.5x markup
$216.2K
24.2K services$8.94/svc4.47x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9041Injection, bortezomib, 0.1 mg195.2K$5.9M$30.333.59x
J9047Injection, carfilzomib, 1 mg204.1K$5.7M$28.171.66x
J9176Injection, elotuzumab, 1 mg650.6K$3.4M$5.191.54x
J9145Injection, daratumumab, 10 mg58.4K$2.3M$39.441.57x
J9227Injection, isatuximab-irfc, 10 mg28.8K$1.6M$54.392.16x
99215Established patient office or other outpatient visit, 40-54 minutes11.3K$1.4M$127.393.42x
96413Administration of chemotherapy into vein, 1 hour or less10.1K$1.3M$124.384.22x
J0897Injection, denosumab, 1 mg72.2K$1.2M$15.971.50x
Q2050Injection, doxorubicin hydrochloride, liposomal, not otherwise specified, 10 mg3.9K$1.0M$256.855.02x
J9044Injection, bortezomib, not otherwise specified, 0.1 mg37.4K$592.3K$15.856.93x
J9033Injection, bendamustine hcl (treanda), 1 mg32.5K$448.4K$13.813.57x
96367Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less15.4K$421.7K$27.355.12x
J0885Injection, epoetin alfa, (for non-esrd use), 1000 units36.7K$353.4K$9.634.30x
96365Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less5.4K$333.1K$61.945.08x
96409Administration of chemotherapy into vein using push technique3.3K$318.9K$97.403.78x
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj8.3K$314.5K$37.672.05x
96401Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle4.4K$300.7K$68.502.00x
J3489Injection, zoledronic acid, 1 mg16.2K$287.9K$17.8022.47x
80053Blood test, comprehensive group of blood chemicals18.7K$220.3K$11.765.53x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count24.2K$216.2K$8.944.47x

Markup Analysis

Charge-to-Payment Ratio

3.18x

This provider submits charges 3.18 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.18x means for every $100 Medicare pays, this provider initially charges $318. This is higher than the national average.

Location

West Hollywood, 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 Hematology-Oncology providers in CA for peer comparison.

James Berenson (you)
$29.5M
Luke Dreisbach, M.D.
$77.2M
Sachin Gupta, M.D.
$55.1M
Ravi Rao, MDโš ๏ธ
$49.1M
Michael Sherman, M.D., PHD
$38.9M
Nerses Tchekmedyian, M.D.
$38.0M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Luke Dreisbach, M.D.Rancho Mirage, CA$77.2Mโœ“ Clear
Sachin Gupta, M.D.Fresno, CA$55.1Mโœ“ Clear
Ravi Rao, MDFresno, CA$49.1Mโš ๏ธ Flagged
Michael Sherman, M.D., PHDWalnut Creek, CA$38.9Mโœ“ Clear
Nerses Tchekmedyian, M.D.Irvine, CA$38.0Mโœ“ 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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