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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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ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Derek Barker
๐Ÿ‘๏ธ
MDIndividual

Derek Barker, M.D.

NPI: 1982662847
Columbia, SC
10 years of data
Ophthalmology
$25.1M
Total Payments
215
Beneficiaries
177.4K
Services
2.41x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$25.1M
Specialty median$383.7K

๐Ÿ“‹ Key Findings

1Billed $25.1M over 10 years
22.41x markup ratio (above median)
399th percentile in Ophthalmology by payments
471 services/day โ€” unusually high
5Payments surged 67% in 2019
69 procedures with >3x markup

This provider averages 71 services per working day

Based on 177.4K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $25.1M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 71 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 472% 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 67% 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$344.13$82.434.17x$261.70$828.2K10.0K23
2015$347.23$84.864.09x$262.37$925.5K10.9K22
2016$379.23$100.453.78x$278.78$1.2M11.5K24
2017$354.07$114.703.09x$239.37$1.4M12.3K23
2018$372.56$136.152.74x$236.41$1.8M12.9K22
2019$397.04$185.692.14x$211.35$2.9M15.8K20
2020$432.27$206.192.10x$226.08$3.3M15.9K22
2021$474.69$233.432.03x$241.26$3.9M16.8K21
2022$455.19$218.422.08x$236.77$4.2M19.1K19
2023$192.68$90.872.12x$101.81$4.7M52.1K19

Top Procedures (20)

J0178Injection, aflibercept, 1 mg
$10.9M
15.2K services$721.22/svc1.73x markup
J2778Injection, ranibizumab, 0.1 mg
$5.9M
23.7K services$248.79/svc2.01x markup
67028Injection of drug into eyeโš  7.8x markup
$1.9M
23.6K services$82.20/svc7.83x markup
J2777Injection, faricimab-svoa, 0.1 mg
$1.1M
36.8K services$28.93/svc1.73x markup
92134Imaging of retinaโš  3.9x markup
$773.4K
25.9K services$29.91/svc3.88x markup
92012Eye and medical examination for diagnosis and treatment, established patient
$719.6K
12.6K services$57.12/svc1.49x markup
92014Established patient complete exam of visual system
$520.2K
6.2K services$84.14/svc1.49x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$459.0K
5.5K services$83.59/svc1.47x markup
J3590Unclassified biologics
$367.2K
6.8K services$53.73/svc1.51x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$361.2K
5.8K services$62.32/svc1.38x markup
67042Removal of membrane of retina with removal of internal limiting membrane of retinaโš  4.2x markup
$355.2K
399 services$890.35/svc4.15x markup
J9035Injection, bevacizumab, 10 mg
$327.4K
5.5K services$59.02/svc1.55x markup
67228Destruction of leaking blood vessels of retina using laserโš  3.3x markup
$241.3K
588 services$410.32/svc3.31x markup
67210Destruction of growth of retina using a laserโš  3.0x markup
$211.3K
550 services$384.13/svc3.05x markup
92235Exam of retinal blood vessels using a special camera after injection of a dye
$167.6K
2.3K services$73.27/svc2.71x markup
J7312Injection, dexamethasone, intravitreal implant, 0.1 mgโš  3.2x markup
$164.2K
1.1K services$155.35/svc3.22x markup
67113Repair of detached retina and drainage of eye fluid between lens and retinaโš  4.1x markup
$102.4K
98 services$1.0K/svc4.13x markup
67108Repair of detached retina and drainage of eye fluid between lens and retinaโš  3.3x markup
$85.7K
86 services$997.03/svc3.27x markup
67036Removal of eye fluid (vitreous) between lens and retinaโš  3.0x markup
$82.8K
127 services$651.97/svc3.02x markup
67145Photocoagulation treatment to prevent detachment of retina
$69.7K
190 services$366.64/svc2.70x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J0178Injection, aflibercept, 1 mg15.2K$10.9M$721.221.73x
J2778Injection, ranibizumab, 0.1 mg23.7K$5.9M$248.792.01x
67028Injection of drug into eye23.6K$1.9M$82.207.83x
J2777Injection, faricimab-svoa, 0.1 mg36.8K$1.1M$28.931.73x
92134Imaging of retina25.9K$773.4K$29.913.88x
92012Eye and medical examination for diagnosis and treatment, established patient12.6K$719.6K$57.121.49x
92014Established patient complete exam of visual system6.2K$520.2K$84.141.49x
99214Established patient office or other outpatient visit, 30-39 minutes5.5K$459.0K$83.591.47x
J3590Unclassified biologics6.8K$367.2K$53.731.51x
99213Established patient office or other outpatient visit, 20-29 minutes5.8K$361.2K$62.321.38x
67042Removal of membrane of retina with removal of internal limiting membrane of retina399$355.2K$890.354.15x
J9035Injection, bevacizumab, 10 mg5.5K$327.4K$59.021.55x
67228Destruction of leaking blood vessels of retina using laser588$241.3K$410.323.31x
67210Destruction of growth of retina using a laser550$211.3K$384.133.05x
92235Exam of retinal blood vessels using a special camera after injection of a dye2.3K$167.6K$73.272.71x
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg1.1K$164.2K$155.353.22x
67113Repair of detached retina and drainage of eye fluid between lens and retina98$102.4K$1.0K4.13x
67108Repair of detached retina and drainage of eye fluid between lens and retina86$85.7K$997.033.27x
67036Removal of eye fluid (vitreous) between lens and retina127$82.8K$651.973.02x
67145Photocoagulation treatment to prevent detachment of retina190$69.7K$366.642.70x

Markup Analysis

Charge-to-Payment Ratio

2.41x

This provider submits charges 2.41 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.41x means for every $100 Medicare pays, this provider initially charges $241. This is higher than the national average.

Location

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.

Derek Barker (you)
$25.1M
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 โ–พ
ProviderLocationTotal PaymentsStatus
Eric Jablon, M.D.Charleston, SC$49.1Mโœ“ Clear
John Wells, MDWest Columbia, SC$38.6Mโœ“ Clear
John Payne, MDWest Columbia, SC$37.4Mโœ“ Clear
John Kerrison, M.D.Charleston, SC$35.7Mโœ“ Clear
David Johnson, MDWest Columbia, SC$34.8Mโœ“ Clear

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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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