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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. Mark Gerber
๐Ÿง 
MDIndividual

Mark Gerber, M.D.

NPI: 1396744397
Naples, FL
10 years of data
Neurosurgery
$4.3M
Total Payments
13.1K
Beneficiaries
15.1K
Services
10.42x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.3M
Specialty median$71.9K

๐Ÿ“‹ Key Findings

1Billed $4.3M over 10 years
210.42x markup ratio (above median)
399th percentile in Neurosurgery by payments
4Payments surged 60% in 2019
517 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.3M in total Medicare payments ranks in the 99th percentile of Neurosurgery providers nationally.

Their average markup ratio of 10.42x is significantly above the specialty median of 5.9x.

Medicare payments to this provider grew 54% 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 60% in 2019

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$5.8K$373.9315.45x$5.4K$329.6K1.7K1.4K
2015$6.8K$762.948.91x$6.0K$479.7K1.6K1.3K
2016$7.4K$452.8216.34x$6.9K$303.1K1.3K1.1K
2017$7.1K$624.7311.36x$6.5K$312.3K1.3K1.1K
2018$6.3K$612.6810.28x$5.7K$288.5K1.2K1.0K
2019$8.1K$605.6613.33x$7.5K$462.9K1.9K1.7K
2020$9.0K$695.6113.00x$8.3K$449.8K1.6K1.4K
2021$10.1K$939.3810.80x$9.2K$578.2K1.6K1.4K
2022$9.7K$940.1110.34x$8.8K$557.1K1.5K1.4K
2023$9.9K$872.0611.36x$9.0K$508.4K1.5K1.3K

Top Procedures (20)

22513Injection of bone cement into body of middle spine bone accessed through the skin using imaging guidanceโš  4.9x markup
$772.7K
174 services$4.4K/svc4.91x markup
22514Injection of bone cement into body of lower spine bone accessed through the skin using imaging guidanceโš  6.8x markup
$418.1K
155 services$2.7K/svc6.84x markup
22551Fusion of spine bones with removal of disc at upper spinal column, anterior approachโš  15.4x markup
$315.9K
201 services$1.6K/svc15.41x markup
99204New patient office or other outpatient visit, typically 45 minutesโš  3.4x markup
$296.7K
2.3K services$129.80/svc3.35x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$253.8K
2.7K services$92.38/svc2.71x markup
22612Fusion of lower spine bones, posterior or posterolateral approachโš  15.8x markup
$216.1K
155 services$1.4K/svc15.82x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$212.7K
3.5K services$60.59/svc2.79x markup
63030Partial removal of bone with release of spinal cord or spinal nerves of 1 interspace in lower spineโš  16.4x markup
$183.5K
217 services$845.84/svc16.40x markup
22845Insertion of anterior spinal instrumentation for spinal stabilization, 2 to 3 vertebral segmentsโš  15.3x markup
$179.0K
262 services$683.38/svc15.30x markup
63047Partial removal of middle spine bone with release of spinal cord and/or nervesโš  17.1x markup
$153.9K
171 services$899.73/svc17.15x markup
22840Insertion of posterior spinal instrumentation at base of neck for stabilization, 1 interspaceโš  15.2x markup
$145.2K
207 services$701.67/svc15.21x markup
22633Fusion of lower spine bones with removal of disc, posterior or posterolateral approachโš  15.8x markup
$133.7K
81 services$1.7K/svc15.80x markup
22558Fusion of spine bones with removal of disc at lower spinal column, anterior approachโš  21.9x markup
$116.9K
120 services$974.16/svc21.86x markup
22853Insertion of device into intervertebral disc space of spine and fusion of vertebraeโš  15.5x markup
$105.0K
439 services$239.25/svc15.47x markup
22842Insertion of posterior spinal instrumentation for spinal stabilization, 3 to 6 vertebral segmentsโš  15.0x markup
$100.2K
141 services$710.49/svc15.04x markup
63650Implantation of spinal neurostimulator electrodes, accessed through the skinโš  20.2x markup
$86.6K
312 services$277.58/svc20.20x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$82.2K
491 services$167.51/svc2.87x markup
22851Insertion of spinal instrumentation for spinal stabilizationโš  15.3x markup
$56.1K
150 services$374.18/svc15.27x markup
63685Insertion of spinal neurostimulator pulse generator or receiverโš  26.0x markup
$50.4K
266 services$189.29/svc25.98x markup
22630Fusion of lower spine bones with removal of disc, posterior approachโš  15.2x markup
$47.1K
33 services$1.4K/svc15.15x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
22513Injection of bone cement into body of middle spine bone accessed through the skin using imaging guidance174$772.7K$4.4K4.91x
22514Injection of bone cement into body of lower spine bone accessed through the skin using imaging guidance155$418.1K$2.7K6.84x
22551Fusion of spine bones with removal of disc at upper spinal column, anterior approach201$315.9K$1.6K15.41x
99204New patient office or other outpatient visit, typically 45 minutes2.3K$296.7K$129.803.35x
99214Established patient office or other outpatient, visit typically 25 minutes2.7K$253.8K$92.382.71x
22612Fusion of lower spine bones, posterior or posterolateral approach155$216.1K$1.4K15.82x
99213Established patient office or other outpatient visit, typically 15 minutes3.5K$212.7K$60.592.79x
63030Partial removal of bone with release of spinal cord or spinal nerves of 1 interspace in lower spine217$183.5K$845.8416.40x
22845Insertion of anterior spinal instrumentation for spinal stabilization, 2 to 3 vertebral segments262$179.0K$683.3815.30x
63047Partial removal of middle spine bone with release of spinal cord and/or nerves171$153.9K$899.7317.15x
22840Insertion of posterior spinal instrumentation at base of neck for stabilization, 1 interspace207$145.2K$701.6715.21x
22633Fusion of lower spine bones with removal of disc, posterior or posterolateral approach81$133.7K$1.7K15.80x
22558Fusion of spine bones with removal of disc at lower spinal column, anterior approach120$116.9K$974.1621.86x
22853Insertion of device into intervertebral disc space of spine and fusion of vertebrae439$105.0K$239.2515.47x
22842Insertion of posterior spinal instrumentation for spinal stabilization, 3 to 6 vertebral segments141$100.2K$710.4915.04x
63650Implantation of spinal neurostimulator electrodes, accessed through the skin312$86.6K$277.5820.20x
99223Initial hospital inpatient care, typically 70 minutes per day491$82.2K$167.512.87x
22851Insertion of spinal instrumentation for spinal stabilization150$56.1K$374.1815.27x
63685Insertion of spinal neurostimulator pulse generator or receiver266$50.4K$189.2925.98x
22630Fusion of lower spine bones with removal of disc, posterior approach33$47.1K$1.4K15.15x

Markup Analysis

Charge-to-Payment Ratio

10.42x

This provider submits charges 10.42 times higher than what Medicare actually pays.

What This Means

A markup ratio of 10.42x means for every $100 Medicare pays, this provider initially charges $1042. This is higher than the national average.

Location

Naples, FL

Provider Verification

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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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