OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
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. John Kerrison
๐Ÿ‘๏ธ
MDIndividual

John Kerrison, M.D.

NPI: 1952416257
Charleston, SC
10 years of data
Ophthalmology
$35.7M
Total Payments
189
Beneficiaries
216.5K
Services
2.56x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$35.7M
Specialty median$383.7K
Rank #154 of 189 in specialty

๐Ÿ“‹ Key Findings

1Billed $35.7M over 10 years
22.56x markup ratio (above median)
399th percentile in Ophthalmology by payments
487 services/day โ€” unusually high
5Payments surged 161% in 2018
67 procedures with >3x markup

This provider averages 87 services per working day

Based on 216.5K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $35.7M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 87 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 402% 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 161% in 2018

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$259.23$62.944.12x$196.29$989.2K15.7K19
2015$252.24$58.434.32x$193.81$981.2K16.8K20
2016$275.14$74.763.68x$200.38$1.2M15.6K20
2017$380.19$137.392.77x$242.80$2.3M16.6K19
2018$452.89$208.682.17x$244.21$6.0M28.6K17
2019$444.76$196.182.27x$248.58$5.4M27.8K18
2020$460.06$193.452.38x$266.61$4.9M25.4K18
2021$453.54$184.742.46x$268.80$4.5M24.4K16
2022$592.86$230.262.57x$362.60$4.5M19.6K18
2023$491.61$190.612.58x$301.00$5.0M26.0K24

Top Procedures (20)

J2778Injection, ranibizumab, 0.1 mg
$19.2M
71.0K services$269.64/svc1.83x markup
J0178Injection, aflibercept, 1 mg
$7.7M
10.8K services$715.68/svc2.10x markup
67028Injection of drug into eyeโš  9.9x markup
$2.2M
27.1K services$83.03/svc9.89x markup
92134Imaging of retina
$1.2M
40.8K services$28.81/svc2.95x markup
92012Established patient problem focused exam of visual system
$945.9K
16.5K services$57.29/svc1.74x markup
J3590Unclassified biologics
$496.1K
9.5K services$52.47/svc1.43x markup
92014Established patient complete exam of visual system
$462.2K
5.7K services$81.62/svc2.32x markup
92235Exam of retinal blood vessels using a special camera after injection of a dyeโš  3.3x markup
$376.0K
4.9K services$76.74/svc3.26x markup
92004New patient complete exam of visual system
$374.9K
3.7K services$100.46/svc1.66x markup
67042Removal of membrane of retina with removal of internal limiting membrane of retinaโš  5.1x markup
$350.2K
393 services$891.12/svc5.14x markup
J3490Unclassified drugs
$345.4K
196 services$1.8K/svc1.42x markup
Q5128Injection, ranibizumab-eqrn (cimerli), biosimilar, 0.1 mg
$295.1K
1.4K services$216.50/svc2.31x markup
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg
$277.6K
1.8K services$156.77/svc1.91x markup
J2781Injection, pegcetacoplan, intravitreal, 1 mg
$229.3K
2.0K services$116.69/svc1.50x markup
J2777Injection, faricimab-svoa, 0.1 mg
$196.9K
6.8K services$29.04/svc2.01x markup
67040Laser destruction of eye fluid (vitreous) between the lens and retina, all of the retinaโš  7.3x markup
$149.4K
186 services$803.13/svc7.27x markup
92250Photography of the retina
$143.3K
3.8K services$37.95/svc2.33x markup
67108Repair of detached retina with drainage and removal of eye fluid between lens and retinaโš  7.4x markup
$140.9K
151 services$933.14/svc7.36x markup
67113Complex repair of detached retina and drainage of eye fluid between lens and retinaโš  5.1x markup
$113.8K
116 services$980.89/svc5.09x markup
67036Removal of eye fluid (vitreous) between lens and retinaโš  7.5x markup
$97.5K
146 services$668.06/svc7.45x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J2778Injection, ranibizumab, 0.1 mg71.0K$19.2M$269.641.83x
J0178Injection, aflibercept, 1 mg10.8K$7.7M$715.682.10x
67028Injection of drug into eye27.1K$2.2M$83.039.89x
92134Imaging of retina40.8K$1.2M$28.812.95x
92012Established patient problem focused exam of visual system16.5K$945.9K$57.291.74x
J3590Unclassified biologics9.5K$496.1K$52.471.43x
92014Established patient complete exam of visual system5.7K$462.2K$81.622.32x
92235Exam of retinal blood vessels using a special camera after injection of a dye4.9K$376.0K$76.743.26x
92004New patient complete exam of visual system3.7K$374.9K$100.461.66x
67042Removal of membrane of retina with removal of internal limiting membrane of retina393$350.2K$891.125.14x
J3490Unclassified drugs196$345.4K$1.8K1.42x
Q5128Injection, ranibizumab-eqrn (cimerli), biosimilar, 0.1 mg1.4K$295.1K$216.502.31x
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg1.8K$277.6K$156.771.91x
J2781Injection, pegcetacoplan, intravitreal, 1 mg2.0K$229.3K$116.691.50x
J2777Injection, faricimab-svoa, 0.1 mg6.8K$196.9K$29.042.01x
67040Laser destruction of eye fluid (vitreous) between the lens and retina, all of the retina186$149.4K$803.137.27x
92250Photography of the retina3.8K$143.3K$37.952.33x
67108Repair of detached retina with drainage and removal of eye fluid between lens and retina151$140.9K$933.147.36x
67113Complex repair of detached retina and drainage of eye fluid between lens and retina116$113.8K$980.895.09x
67036Removal of eye fluid (vitreous) between lens and retina146$97.5K$668.067.45x

Markup Analysis

Charge-to-Payment Ratio

2.56x

This provider submits charges 2.56 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.56x means for every $100 Medicare pays, this provider initially charges $256. This is higher than the national average.

Location

Charleston, 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.

John Kerrison (you)
$35.7M
Eric Jablon, M.D.
$49.1M
John Wells, MD
$38.6M
John Payne, MD
$37.4M
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
David Johnson, MDWest Columbia, SC$34.8Mโœ“ Clear

Related

Browse
โ† Back to Provider Directory
State
All providers in SC โ†’
Specialty
All Ophthalmology providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

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.

Believe this data is inaccurate? Dispute this data