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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. Daniel Greenwald
๐ŸŽ—๏ธ
MDIndividual

Daniel Greenwald, M.D.

NPI: 1235240987
Santa Barbara, CA
10 years of data
Medical Oncology
$18.7M
Total Payments
273
Beneficiaries
960.7K
Services
4.24x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$18.7M
Specialty median$262.8K

๐Ÿ“‹ Key Findings

1Billed $18.7M over 10 years
24.24x markup ratio (above median)
3Risk score: 70 โ€” flagged for review
499th percentile in Medical Oncology by payments
5384 services/day โ€” physically implausible
6Payments surged 116% in 2015

โš ๏ธ Flagged for Review

Risk Score: 70
  • 76x specialty median spending
  • Markup 23.1x (specialty median: 4.3x)
  • 9x specialty median beneficiaries
  • 215x specialty median services
View Deep Dives โ†’Report Fraud โ†’

Statistical flag only โ€” not an accusation of fraud

โš ๏ธ This provider averages 384 services per working day โ€” physically unusual for an individual practitioner

Based on 960.7K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $18.7M in total Medicare payments ranks in the 99th percentile of Medical Oncology providers nationally.

Averaging 384 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 584% from 2014 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 116% 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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$32.52$11.432.85x$21.09$506.9K44.3K23
2015$28.94$10.692.71x$18.25$1.1M102.6K28
2016$41.70$15.072.77x$26.63$1.1M72.4K26
2017$58.68$21.912.68x$36.77$1.3M57.2K25
2018$33.88$12.982.61x$20.90$1.6M123.3K27
2019$53.04$19.442.73x$33.60$1.7M86.1K26
2020$57.39$20.632.78x$36.76$2.5M120.7K31
2021$127.40$20.816.12x$106.59$2.3M110.6K31
2022$147.63$25.025.90x$122.61$3.2M128.4K28
2023$171.47$30.135.69x$141.34$3.5M115.0K28

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mgโš  4.3x markup
$6.4M
156.6K services$40.87/svc4.27x markup
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihjโš  5.2x markup
$1.8M
49.0K services$37.41/svc5.17x markup
J2505Injection, pegfilgrastim, 6 mg
$1.4M
461 services$3.0K/svc2.69x markup
J0897Injection, denosumab, 1 mgโš  3.3x markup
$1.3M
88.4K services$14.60/svc3.32x markup
99214Established patient office or other outpatient visit, 30-39 minutesโš  4.8x markup
$1.1M
12.4K services$88.83/svc4.75x markup
J9299Injection, nivolumab, 1 mgโš  5.2x markup
$901.2K
39.0K services$23.11/svc5.18x markup
J9310Injection, rituximab, 100 mg
$871.4K
1.3K services$645.97/svc2.28x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)โš  3.4x markup
$774.0K
263.4K services$2.94/svc3.42x markup
J9145Injection, daratumumab, 10 mg
$707.6K
16.2K services$43.62/svc2.64x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  4.5x markup
$522.6K
4.0K services$131.85/svc4.50x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  5.0x markup
$514.4K
4.3K services$120.95/svc5.05x markup
J9312Injection, rituximab, 10 mgโš  3.2x markup
$452.8K
6.1K services$73.75/svc3.24x markup
J9035Injection, bevacizumab, 10 mg
$216.4K
3.9K services$55.63/svc2.64x markup
99213Established patient office or other outpatient visit, 20-29 minutesโš  4.3x markup
$143.3K
2.4K services$59.02/svc4.29x markup
99205New patient office or other outpatient visit, 60-74 minutesโš  5.0x markup
$121.1K
710 services$170.61/svc4.98x markup
J9041Injection, bortezomib, 0.1 mg
$112.4K
3.1K services$36.50/svc2.52x markup
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutesโš  4.6x markup
$111.7K
1.3K services$87.04/svc4.59x markup
J2506Injection, pegfilgrastim, excludes biosimilar, 0.5 mgโš  12.2x markup
$103.2K
792 services$130.31/svc12.18x markup
J2469Injection, palonosetron hcl, 25 mcgโš  7.1x markup
$101.1K
11.2K services$9.06/svc7.07x markup
J9217Leuprolide acetate (for depot suspension), 7.5 mgโš  14.1x markup
$89.2K
583 services$152.92/svc14.08x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg156.6K$6.4M$40.874.27x
J9144Injection, daratumumab, 10 mg and hyaluronidase-fihj49.0K$1.8M$37.415.17x
J2505Injection, pegfilgrastim, 6 mg461$1.4M$3.0K2.69x
J0897Injection, denosumab, 1 mg88.4K$1.3M$14.603.32x
99214Established patient office or other outpatient visit, 30-39 minutes12.4K$1.1M$88.834.75x
J9299Injection, nivolumab, 1 mg39.0K$901.2K$23.115.18x
J9310Injection, rituximab, 100 mg1.3K$871.4K$645.972.28x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)263.4K$774.0K$2.943.42x
J9145Injection, daratumumab, 10 mg16.2K$707.6K$43.622.64x
99215Established patient office or other outpatient visit, 40-54 minutes4.0K$522.6K$131.854.50x
96413Administration of chemotherapy into vein, 1 hour or less4.3K$514.4K$120.955.05x
J9312Injection, rituximab, 10 mg6.1K$452.8K$73.753.24x
J9035Injection, bevacizumab, 10 mg3.9K$216.4K$55.632.64x
99213Established patient office or other outpatient visit, 20-29 minutes2.4K$143.3K$59.024.29x
99205New patient office or other outpatient visit, 60-74 minutes710$121.1K$170.614.98x
J9041Injection, bortezomib, 0.1 mg3.1K$112.4K$36.502.52x
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes1.3K$111.7K$87.044.59x
J2506Injection, pegfilgrastim, excludes biosimilar, 0.5 mg792$103.2K$130.3112.18x
J2469Injection, palonosetron hcl, 25 mcg11.2K$101.1K$9.067.07x
J9217Leuprolide acetate (for depot suspension), 7.5 mg583$89.2K$152.9214.08x

Markup Analysis

Charge-to-Payment Ratio

4.24x

This provider submits charges 4.24 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.24x means for every $100 Medicare pays, this provider initially charges $424. This is higher than the national average.

Location

Santa Barbara, CA

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.

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