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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. Ronald Drengler
๐ŸŽ—๏ธ
MDIndividual

Ronald Drengler, M.D.

NPI: 1265459168
San Antonio, TX
10 years of data
Medical Oncology
$21.9M
Total Payments
416
Beneficiaries
1.4M
Services
3.76x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$21.9M
Specialty median$262.8K

๐Ÿ“‹ Key Findings

1Billed $21.9M over 10 years
23.76x markup ratio (above median)
399th percentile in Medical Oncology by payments
4556 services/day โ€” physically implausible
5Payments surged 62% in 2023
618 procedures with >3x markup

โš ๏ธ This provider averages 556 services per working day โ€” physically unusual for an individual practitioner

Based on 1.4M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $21.9M in total Medicare payments ranks in the 99th percentile of Medical Oncology providers nationally.

Averaging 556 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 150% 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 62% in 2023

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$53.40$12.824.17x$40.58$1.5M119.2K42
2015$67.24$17.123.93x$50.12$1.9M112.3K39
2016$69.84$18.603.75x$51.24$2.5M133.1K44
2017$48.81$12.973.76x$35.84$2.0M151.1K39
2018$60.62$15.753.85x$44.87$1.6M100.1K36
2019$56.15$15.313.67x$40.84$2.2M144.0K40
2020$57.84$15.823.66x$42.02$2.2M137.6K43
2021$52.66$14.133.73x$38.53$1.9M137.0K45
2022$69.75$17.793.92x$51.96$2.3M132.1K42
2023$59.83$17.073.50x$42.76$3.8M223.5K46

Top Procedures (20)

J9271Injection, pembrolizumab, 1 mgโš  3.9x markup
$6.6M
168.1K services$39.17/svc3.87x markup
J9299Injection, nivolumab, 1 mgโš  3.9x markup
$2.3M
102.9K services$22.58/svc3.86x markup
J2505Injection, pegfilgrastim, 6 mgโš  3.3x markup
$2.2M
735 services$3.0K/svc3.30x markup
J9310Injection, rituximab, 100 mgโš  3.9x markup
$1.5M
2.5K services$593.22/svc3.85x markup
J9228Injection, ipilimumab, 1 mg
$861.4K
6.8K services$127.24/svc1.71x markup
J0897Injection, denosumab, 1 mgโš  3.9x markup
$825.6K
58.4K services$14.13/svc3.90x markup
96413Administration of chemotherapy into vein, 1 hour or lessโš  3.9x markup
$653.5K
6.5K services$101.21/svc3.87x 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
$594.1K
3.8K services$157.85/svc1.01x markup
J9035Injection, bevacizumab, 10 mgโš  3.8x markup
$551.2K
10.4K services$52.95/svc3.82x markup
J9999Not otherwise classified, antineoplastic drugsโš  3.8x markup
$509.1K
472 services$1.1K/svc3.83x markup
Q5111Injection, pegfilgrastim-cbqv, biosimilar, (udenyca), 0.5 mgโš  3.5x markup
$438.8K
2.1K services$204.30/svc3.55x markup
J3490Unclassified drugsโš  4.0x markup
$425.7K
5.0K services$84.93/svc3.95x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  4.0x markup
$371.1K
3.4K services$110.49/svc3.96x markup
99214Established patient office or other outpatient visit, 30-39 minutesโš  4.0x markup
$350.1K
4.1K services$86.15/svc3.96x markup
J1454Injection, fosnetupitant 235 mg and palonosetron 0.25 mgโš  3.8x markup
$329.8K
898 services$367.21/svc3.84x markup
J9264Injection, paclitaxel protein-bound particles, 1 mgโš  3.8x markup
$310.9K
32.7K services$9.51/svc3.83x markup
J1449Injection, eflapegrastim-xnst, 0.1 mgโš  3.8x markup
$212.3K
8.6K services$24.74/svc3.83x markup
J2469Injection, palonosetron hcl, 25 mcgโš  4.0x markup
$196.8K
13.6K services$14.50/svc4.01x markup
J1439Injection, ferric carboxymaltose, 1 mgโš  3.8x markup
$183.6K
214.9K services$0.85/svc3.84x markup
96367Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or lessโš  3.8x markup
$178.2K
7.8K services$22.93/svc3.84x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J9271Injection, pembrolizumab, 1 mg168.1K$6.6M$39.173.87x
J9299Injection, nivolumab, 1 mg102.9K$2.3M$22.583.86x
J2505Injection, pegfilgrastim, 6 mg735$2.2M$3.0K3.30x
J9310Injection, rituximab, 100 mg2.5K$1.5M$593.223.85x
J9228Injection, ipilimumab, 1 mg6.8K$861.4K$127.241.71x
J0897Injection, denosumab, 1 mg58.4K$825.6K$14.133.90x
96413Administration of chemotherapy into vein, 1 hour or less6.5K$653.5K$101.213.87x
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 a3.8K$594.1K$157.851.01x
J9035Injection, bevacizumab, 10 mg10.4K$551.2K$52.953.82x
J9999Not otherwise classified, antineoplastic drugs472$509.1K$1.1K3.83x
Q5111Injection, pegfilgrastim-cbqv, biosimilar, (udenyca), 0.5 mg2.1K$438.8K$204.303.55x
J3490Unclassified drugs5.0K$425.7K$84.933.95x
99215Established patient office or other outpatient visit, 40-54 minutes3.4K$371.1K$110.493.96x
99214Established patient office or other outpatient visit, 30-39 minutes4.1K$350.1K$86.153.96x
J1454Injection, fosnetupitant 235 mg and palonosetron 0.25 mg898$329.8K$367.213.84x
J9264Injection, paclitaxel protein-bound particles, 1 mg32.7K$310.9K$9.513.83x
J1449Injection, eflapegrastim-xnst, 0.1 mg8.6K$212.3K$24.743.83x
J2469Injection, palonosetron hcl, 25 mcg13.6K$196.8K$14.504.01x
J1439Injection, ferric carboxymaltose, 1 mg214.9K$183.6K$0.853.84x
96367Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less7.8K$178.2K$22.933.84x

Markup Analysis

Charge-to-Payment Ratio

3.76x

This provider submits charges 3.76 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.76x means for every $100 Medicare pays, this provider initially charges $376. This is higher than the national average.

Location

San Antonio, TX

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 TX for peer comparison.

Ronald Drengler (you)
$21.9M
James Uyeki, M.D.โš ๏ธ
$35.1M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
James Uyeki, M.D.Austin, TX$35.1Mโš ๏ธ Flagged

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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