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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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Methodology•Download Data
  1. Home
  2. Providers
  3. Mark Walsh
👁️
MDIndividual

Mark Walsh, M.D.,PHD

NPI: 1003952318
Tucson, AZ
10 years of data
Ophthalmology
$29.3M
Total Payments
226
Beneficiaries
226.8K
Services
2.02x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$29.3M
Specialty median$383.7K

📋 Key Findings

1Billed $29.3M over 10 years
22.02x markup ratio (above median)
399th percentile in Ophthalmology by payments
491 services/day — unusually high
52 procedures with >3x markup

This provider averages 91 services per working day

Based on 226.8K total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $29.3M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 91 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 55% 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 — the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$281.17$148.331.90x$132.84$2.7M18.1K20
2015$268.74$132.472.03x$136.27$2.5M18.5K22
2016$287.85$135.102.13x$152.75$2.4M17.9K22
2017$285.52$130.802.18x$154.72$2.3M17.9K23
2018$297.12$138.602.14x$158.52$2.8M20.1K24
2019$302.05$141.142.14x$160.91$2.7M19.3K24
2020$327.58$159.972.05x$167.61$2.8M17.2K21
2021$351.79$177.361.98x$174.43$3.2M18.0K25
2022$332.56$171.811.94x$160.75$3.8M22.2K22
2023$136.96$72.141.90x$64.82$4.2M57.6K23

Top Procedures (20)

J0178Injection, aflibercept, 1 mg
$14.4M
19.4K services$738.76/svc1.69x markup
J2778Injection, ranibizumab, 0.1 mg
$2.9M
10.0K services$292.00/svc1.72x markup
67028Injection of drug into eye
$2.4M
25.8K services$92.02/svc2.92x markup
92014Established patient complete exam of visual system
$2.3M
26.3K services$88.65/svc2.77x markup
J2777Injection, faricimab-svoa, 0.1 mg
$1.4M
48.8K services$29.19/svc1.44x markup
92134Imaging of retina
$1.1M
35.9K services$31.03/svc2.94x markup
J7999Compounded drug, not otherwise classified
$989.6K
15.1K services$65.43/svc1.51x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$643.1K
7.0K services$91.29/svc2.41x markup
J3490Unclassified drugs
$326.7K
181 services$1.8K/svc1.80x markup
99204New patient office or other outpatient visit, 45-59 minutes
$322.3K
2.9K services$111.47/svc2.85x markup
92235Exam of retinal blood vessels using a special camera after injection of a dye
$252.1K
3.1K services$80.06/svc2.57x markup
92250Photography of the retina⚠ 3.1x markup
$217.1K
4.9K services$44.01/svc3.08x markup
92012Established patient problem focused exam of visual system
$199.1K
3.2K services$62.47/svc2.82x markup
67036Removal of eye fluid (vitreous) between lens and retina⚠ 3.4x markup
$179.6K
329 services$545.95/svc3.35x markup
J9035Injection, bevacizumab, 10 mg
$171.5K
3.3K services$52.56/svc1.64x markup
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg
$171.1K
1.1K services$158.76/svc1.62x markup
92226Examination of eye by ophthalmoscope with retinal drawing
$129.2K
7.1K services$18.13/svc2.79x markup
67145Photocoagulation treatment to prevent detachment of retina
$116.8K
314 services$372.01/svc2.93x markup
67042Removal of membrane of retina with removal of internal limiting membrane of retina
$93.9K
99 services$948.12/svc2.72x markup
92242Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye
$85.7K
468 services$183.22/svc2.51x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J0178Injection, aflibercept, 1 mg19.4K$14.4M$738.761.69x
J2778Injection, ranibizumab, 0.1 mg10.0K$2.9M$292.001.72x
67028Injection of drug into eye25.8K$2.4M$92.022.92x
92014Established patient complete exam of visual system26.3K$2.3M$88.652.77x
J2777Injection, faricimab-svoa, 0.1 mg48.8K$1.4M$29.191.44x
92134Imaging of retina35.9K$1.1M$31.032.94x
J7999Compounded drug, not otherwise classified15.1K$989.6K$65.431.51x
99214Established patient office or other outpatient visit, 30-39 minutes7.0K$643.1K$91.292.41x
J3490Unclassified drugs181$326.7K$1.8K1.80x
99204New patient office or other outpatient visit, 45-59 minutes2.9K$322.3K$111.472.85x
92235Exam of retinal blood vessels using a special camera after injection of a dye3.1K$252.1K$80.062.57x
92250Photography of the retina4.9K$217.1K$44.013.08x
92012Established patient problem focused exam of visual system3.2K$199.1K$62.472.82x
67036Removal of eye fluid (vitreous) between lens and retina329$179.6K$545.953.35x
J9035Injection, bevacizumab, 10 mg3.3K$171.5K$52.561.64x
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg1.1K$171.1K$158.761.62x
92226Examination of eye by ophthalmoscope with retinal drawing7.1K$129.2K$18.132.79x
67145Photocoagulation treatment to prevent detachment of retina314$116.8K$372.012.93x
67042Removal of membrane of retina with removal of internal limiting membrane of retina99$93.9K$948.122.72x
92242Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye468$85.7K$183.222.51x

Markup Analysis

Charge-to-Payment Ratio

2.02x

This provider submits charges 2.02 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.02x means for every $100 Medicare pays, this provider initially charges $202. This is higher than the national average.

Location

Tucson, AZ

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 Ophthalmology providers in AZ for peer comparison.

Mark Walsh (you)
$29.3M
Derek Kunimoto, MD
$68.3M
David Goldenberg, MD
$50.8M
Sachin Mehta, M.D.
$43.3M
Edward Quinlan, M.D.
$40.1M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Derek Kunimoto, MDMesa, AZ$68.3M✓ Clear
David Goldenberg, MDPhoenix, AZ$50.8M✓ Clear
Sachin Mehta, M.D.Phoenix, AZ$43.3M✓ Clear
Edward Quinlan, M.D.Phoenix, AZ$40.1M✓ Clear

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Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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