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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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Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Gregory Oakhill
๐ŸŽ—๏ธ
MDIndividual

Gregory Oakhill, M.D.

NPI: 1356312466
Fayetteville, AR
10 years of data
Hematology-Oncology
$34.2M
Total Payments
137.8K
Beneficiaries
3.5M
Services
2x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$34.2M
Specialty median$339.6K
Rank #54 of 60 in specialty

๐Ÿ“‹ Key Findings

1Billed $34.2M over 10 years
22x markup ratio
399th percentile in Hematology-Oncology by payments
41.4K services/day โ€” physically implausible
5Payments surged 63% in 2022
62 procedures with >3x markup

โš ๏ธ This provider averages 1.4K services per working day โ€” physically unusual for an individual practitioner

Based on 3.5M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $34.2M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 1.4K services per working day raises questions about billing patterns.

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 63% in 2022

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$29.82$9.853.03x$19.97$3.1M318.9K12.7K
2015$28.03$9.852.85x$18.18$2.6M262.4K10.4K
2016$15.19$9.851.54x$5.34$3.5M357.1K14.2K
2017$34.22$9.853.47x$24.37$4.0M402.5K16.0K
2018$19.04$9.851.93x$9.19$2.7M279.0K11.1K
2019$18.58$9.851.89x$8.73$3.9M398.2K15.8K
2020$18.53$9.851.88x$8.68$3.2M327.7K13.0K
2021$38.49$9.853.91x$28.64$2.6M260.5K10.3K
2022$38.72$9.853.93x$28.87$4.2M423.5K16.8K
2023$16.65$9.851.69x$6.80$4.3M441.3K17.5K

Top Procedures (10)

96413Chemotherapy administration, IV infusion, first hour
$6.2M
503.9K services$12.39/svc1.97x markup
96415Chemotherapy IV infusion, each additional hour
$5.5M
512.4K services$10.67/svc1.63x markup
99214Office/outpatient visit, moderate complexity
$3.9M
238.9K services$16.19/svc2.57x markup
96365IV infusion for therapy, first hour
$2.7M
354.8K services$7.69/svc2.97x markup
36415Insertion of needle into vein
$2.1M
125.8K services$16.94/svc2.55x markup
99215Office/outpatient visit, high complexity
$1.4M
146.8K services$9.77/svc2.94x markup
85025Complete blood cell countโš  4.3x markup
$1.4M
113.4K services$12.55/svc4.35x markup
96375Therapeutic IV push, each additional substance
$1.4M
201.5K services$6.92/svc2.43x markup
80053Comprehensive metabolic panelโš  4.4x markup
$1.3M
145.6K services$9.18/svc4.37x markup
J9271Injection, pembrolizumab
$1.3M
83.5K services$15.80/svc1.31x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
96413Chemotherapy administration, IV infusion, first hour503.9K$6.2M$12.391.97x
96415Chemotherapy IV infusion, each additional hour512.4K$5.5M$10.671.63x
99214Office/outpatient visit, moderate complexity238.9K$3.9M$16.192.57x
96365IV infusion for therapy, first hour354.8K$2.7M$7.692.97x
36415Insertion of needle into vein125.8K$2.1M$16.942.55x
99215Office/outpatient visit, high complexity146.8K$1.4M$9.772.94x
85025Complete blood cell count113.4K$1.4M$12.554.35x
96375Therapeutic IV push, each additional substance201.5K$1.4M$6.922.43x
80053Comprehensive metabolic panel145.6K$1.3M$9.184.37x
J9271Injection, pembrolizumab83.5K$1.3M$15.801.31x

Markup Analysis

Charge-to-Payment Ratio

2x

This provider submits charges 2 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2x means for every $100 Medicare pays, this provider initially charges $200. This is lower than the national average.

Location

Fayetteville, AR

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 AR for peer comparison.

Gregory Oakhill (you)
$34.2M
Kamal Patel, M.D.โš ๏ธ
$58.7M
Balagopalan Nair, M.D.โš ๏ธ
$54.5M
Eric Schaefer, M.D.
$35.5M
Thomas Sneed, M.D.
$34.7M
Lawrence Mendelsohn, MDโš ๏ธ
$34.6M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Kamal Patel, M.D.Little Rock, AR$58.7Mโš ๏ธ Flagged
Balagopalan Nair, M.D.Little Rock, AR$54.5Mโš ๏ธ Flagged
Eric Schaefer, M.D.Fayetteville, AR$35.5Mโœ“ Clear
Thomas Sneed, M.D.Little Rock, AR$34.7Mโœ“ Clear
Lawrence Mendelsohn, MDLittle Rock, AR$34.6Mโš ๏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.

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