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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. William Clark
👁️
MDIndividual

William Clark, MD

NPI: 1528057890
West Columbia, SC
10 years of data
Ophthalmology
$32.1M
Total Payments
132
Beneficiaries
142.1K
Services
2.52x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$32.1M
Specialty median$383.7K

📋 Key Findings

1Billed $32.1M over 10 years
22.52x markup ratio (above median)
399th percentile in Ophthalmology by payments
457 services/day — unusually high
510 procedures with >3x markup

This provider averages 57 services per working day

Based on 142.1K total services over 10 years (250 working days/year). Learn about impossible service volumes →

🔎 Data Analysis

This provider's $32.1M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 57 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 70% 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$430.10$187.352.30x$242.75$1.9M10.3K15
2015$488.99$210.812.32x$278.18$2.5M11.9K13
2016$529.89$226.232.34x$303.66$3.2M14.0K14
2017$532.30$230.702.31x$301.60$3.3M14.1K15
2018$560.72$237.312.36x$323.41$3.7M15.5K14
2019$570.98$237.932.40x$333.05$3.9M16.3K14
2020$567.93$233.832.43x$334.10$3.6M15.4K12
2021$597.93$238.482.51x$359.45$3.6M15.2K13
2022$643.48$242.742.65x$400.74$3.1M12.9K8
2023$689.30$199.933.45x$489.37$3.3M16.4K14

Top Procedures (20)

J2778Injection, ranibizumab, 0.1 mg
$16.6M
60.8K services$273.55/svc1.84x markup
J0178Injection, aflibercept, 1 mg
$10.8M
14.8K services$729.29/svc2.05x markup
67028Injection of drug into eye⚠ 11.6x markup
$1.5M
17.9K services$83.73/svc11.55x markup
92134Imaging of retina
$705.4K
24.5K services$28.82/svc2.62x markup
J3490Unclassified drugs⚠ 3.7x markup
$448.8K
230 services$2.0K/svc3.72x markup
92012Established patient problem focused exam of visual system
$390.6K
6.7K services$58.13/svc1.72x markup
Q5128Injection, ranibizumab-eqrn (cimerli), biosimilar, 0.1 mg⚠ 6.1x markup
$384.7K
1.8K services$216.88/svc6.12x markup
92014Established patient complete exam of visual system
$270.3K
3.3K services$81.08/svc1.59x markup
67041Removal of membrane from the retina⚠ 6.1x markup
$182.2K
207 services$880.33/svc6.09x markup
J2777Injection, faricimab-svoa, 0.1 mg⚠ 3.8x markup
$134.3K
4.9K services$27.62/svc3.79x markup
92235Exam of retinal blood vessels using a special camera after injection of a dye⚠ 3.4x markup
$131.8K
1.8K services$74.99/svc3.41x markup
92004New patient complete exam of visual system
$112.6K
1.1K services$101.39/svc1.55x markup
99204New patient office or other outpatient visit, 45-59 minutes
$98.1K
899 services$109.08/svc2.30x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$68.8K
842 services$81.75/svc1.82x markup
J3590Unclassified biologics
$49.8K
933 services$53.36/svc1.61x markup
J2781Injection, pegcetacoplan, intravitreal, 1 mg⚠ 3.6x markup
$46.9K
390 services$120.36/svc3.64x markup
67108Repair of detached retina and drainage of eye fluid between lens and retina⚠ 7.1x markup
$43.5K
43 services$1.0K/svc7.07x markup
J9035Injection, bevacizumab, 10 mg
$23.2K
393 services$59.08/svc2.54x markup
67040Laser destruction of eye fluid (vitreous) between the lens and retina⚠ 8.0x markup
$22.1K
28 services$790.67/svc8.04x markup
67113Repair of detached retina and drainage of eye fluid between lens and retina⚠ 6.5x markup
$18.1K
17 services$1.1K/svc6.55x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J2778Injection, ranibizumab, 0.1 mg60.8K$16.6M$273.551.84x
J0178Injection, aflibercept, 1 mg14.8K$10.8M$729.292.05x
67028Injection of drug into eye17.9K$1.5M$83.7311.55x
92134Imaging of retina24.5K$705.4K$28.822.62x
J3490Unclassified drugs230$448.8K$2.0K3.72x
92012Established patient problem focused exam of visual system6.7K$390.6K$58.131.72x
Q5128Injection, ranibizumab-eqrn (cimerli), biosimilar, 0.1 mg1.8K$384.7K$216.886.12x
92014Established patient complete exam of visual system3.3K$270.3K$81.081.59x
67041Removal of membrane from the retina207$182.2K$880.336.09x
J2777Injection, faricimab-svoa, 0.1 mg4.9K$134.3K$27.623.79x
92235Exam of retinal blood vessels using a special camera after injection of a dye1.8K$131.8K$74.993.41x
92004New patient complete exam of visual system1.1K$112.6K$101.391.55x
99204New patient office or other outpatient visit, 45-59 minutes899$98.1K$109.082.30x
99214Established patient office or other outpatient visit, 30-39 minutes842$68.8K$81.751.82x
J3590Unclassified biologics933$49.8K$53.361.61x
J2781Injection, pegcetacoplan, intravitreal, 1 mg390$46.9K$120.363.64x
67108Repair of detached retina and drainage of eye fluid between lens and retina43$43.5K$1.0K7.07x
J9035Injection, bevacizumab, 10 mg393$23.2K$59.082.54x
67040Laser destruction of eye fluid (vitreous) between the lens and retina28$22.1K$790.678.04x
67113Repair of detached retina and drainage of eye fluid between lens and retina17$18.1K$1.1K6.55x

Markup Analysis

Charge-to-Payment Ratio

2.52x

This provider submits charges 2.52 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.52x means for every $100 Medicare pays, this provider initially charges $252. This is higher than the national average.

Location

West Columbia, SC

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 SC for peer comparison.

William Clark (you)
$32.1M
Eric Jablon, M.D.
$49.1M
John Wells, MD
$38.6M
John Payne, MD
$37.4M
John Kerrison, M.D.
$35.7M
David Johnson, MD
$34.8M
Show detailed table ▾
ProviderLocationTotal PaymentsStatus
Eric Jablon, M.D.Charleston, SC$49.1M✓ Clear
John Wells, MDWest Columbia, SC$38.6M✓ Clear
John Payne, MDWest Columbia, SC$37.4M✓ Clear
John Kerrison, M.D.Charleston, SC$35.7M✓ Clear
David Johnson, MDWest Columbia, SC$34.8M✓ 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