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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. David Warrow
๐Ÿ‘๏ธ
MDIndividual

David Warrow, M.D.

NPI: 1275776049
Hagerstown, MD
10 years of data
Ophthalmology
$65.5M
Total Payments
246
Beneficiaries
1.8M
Services
2.71x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$65.5M
Specialty median$383.7K
Rank #15 of 189 in specialty

๐Ÿ“‹ Key Findings

1Billed $65.5M over 10 years
22.71x markup ratio (above median)
399th percentile in Ophthalmology by payments
4739 services/day โ€” physically implausible
5Payments surged 895% in 2015
65 procedures with >3x markup

โš ๏ธ This provider averages 739 services per working day โ€” physically unusual for an individual practitioner

Based on 1.8M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $65.5M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 739 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 21283% 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 895% in 2015

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$783.25$115.286.79x$667.97$70.4K61111
2015$473.73$140.213.38x$333.52$701.0K5.0K26
2016$427.53$174.442.45x$253.09$3.4M19.6K22
2017$453.46$212.072.14x$241.39$5.2M24.4K22
2018$469.85$177.512.65x$292.34$6.5M36.9K23
2019$482.13$172.842.79x$309.29$7.7M44.5K22
2020$495.86$173.602.86x$322.26$8.0M46.0K26
2021$492.79$169.452.91x$323.34$9.2M54.5K27
2022$405.68$127.053.19x$278.63$9.6M75.4K34
2023$23.46$9.782.40x$13.68$15.1M1.5M33

Top Procedures (20)

J2778Injection, ranibizumab, 0.1 mg
$26.6M
102.5K services$259.76/svc2.89x markup
J0178Injection, aflibercept, 1 mg
$11.7M
15.6K services$749.15/svc1.67x markup
Q5124Injection, ranibizumab-nuna, biosimilar, (byooviz), 0.1 mg
$5.0M
29.5K services$171.44/svc2.04x markup
67028Injection of drug into eyeโš  6.6x markup
$3.2M
36.7K services$88.03/svc6.58x markup
J3490Unclassified drugs
$3.0M
1.6K services$1.9K/svc2.51x markup
J2777Injection, faricimab-svoa, 0.1 mg
$2.5M
84.7K services$29.15/svc2.06x markup
J2781Injection, pegcetacoplan, intravitreal, 1 mg
$1.8M
15.2K services$120.29/svc2.07x markup
92134Imaging of retinaโš  3.2x markup
$1.5M
46.3K services$31.53/svc3.17x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$1.0M
10.9K services$94.60/svc1.79x markup
92014Established patient complete exam of visual system
$918.7K
10.2K services$90.48/svc1.66x markup
J2403Chloroprocaine hcl ophthalmic, 3% gel, 1 mg
$761.3K
1.4M services$0.55/svc1.31x markup
92235Exam of retinal blood vessels using a special camera after injection of a dye
$741.2K
9.0K services$82.64/svc2.42x markup
67042Removal of membrane of retina with removal of internal limiting membrane of retinaโš  5.1x markup
$564.2K
631 services$894.09/svc5.12x markup
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg
$563.0K
3.6K services$157.65/svc2.35x markup
92250Photography of the retina
$514.0K
14.8K services$34.78/svc2.87x 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
$469.7K
2.4K services$198.44/svc1.61x markup
67113Complex repair of detached retina and drainage of eye fluid between lens and retinaโš  4.9x markup
$402.6K
384 services$1.0K/svc4.91x markup
99204New patient office or other outpatient visit, 45-59 minutes
$401.4K
3.3K services$121.87/svc1.66x markup
765122d ultrasound scan of eye tissue and structuresโš  5.8x markup
$400.0K
8.5K services$47.18/svc5.83x markup
92012Established patient problem focused exam of visual system
$370.5K
5.6K services$66.45/svc1.66x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J2778Injection, ranibizumab, 0.1 mg102.5K$26.6M$259.762.89x
J0178Injection, aflibercept, 1 mg15.6K$11.7M$749.151.67x
Q5124Injection, ranibizumab-nuna, biosimilar, (byooviz), 0.1 mg29.5K$5.0M$171.442.04x
67028Injection of drug into eye36.7K$3.2M$88.036.58x
J3490Unclassified drugs1.6K$3.0M$1.9K2.51x
J2777Injection, faricimab-svoa, 0.1 mg84.7K$2.5M$29.152.06x
J2781Injection, pegcetacoplan, intravitreal, 1 mg15.2K$1.8M$120.292.07x
92134Imaging of retina46.3K$1.5M$31.533.17x
99214Established patient office or other outpatient visit, 30-39 minutes10.9K$1.0M$94.601.79x
92014Established patient complete exam of visual system10.2K$918.7K$90.481.66x
J2403Chloroprocaine hcl ophthalmic, 3% gel, 1 mg1.4M$761.3K$0.551.31x
92235Exam of retinal blood vessels using a special camera after injection of a dye9.0K$741.2K$82.642.42x
67042Removal of membrane of retina with removal of internal limiting membrane of retina631$564.2K$894.095.12x
J7312Injection, dexamethasone, intravitreal implant, 0.1 mg3.6K$563.0K$157.652.35x
92250Photography of the retina14.8K$514.0K$34.782.87x
92242Exam of retinal blood vessels and blood vessels between the white part of eye and retina using a special camera after injection of a dye2.4K$469.7K$198.441.61x
67113Complex repair of detached retina and drainage of eye fluid between lens and retina384$402.6K$1.0K4.91x
99204New patient office or other outpatient visit, 45-59 minutes3.3K$401.4K$121.871.66x
765122d ultrasound scan of eye tissue and structures8.5K$400.0K$47.185.83x
92012Established patient problem focused exam of visual system5.6K$370.5K$66.451.66x

Markup Analysis

Charge-to-Payment Ratio

2.71x

This provider submits charges 2.71 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.71x means for every $100 Medicare pays, this provider initially charges $271. This is higher than the national average.

Location

Hagerstown, MD

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 MD for peer comparison.

David Warrow (you)
$65.5M
Michael Elman, M.D.
$68.5M
Raymond Sjaarda, M.D.
$47.2M
Allen Hu, MD
$45.7M
James Rial, M.D.
$45.2M
Joseph Schwartz, M.D.
$44.0M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Michael Elman, M.D.Baltimore, MD$68.5Mโœ“ Clear
Raymond Sjaarda, M.D.Baltimore, MD$47.2Mโœ“ Clear
Allen Hu, MDHagerstown, MD$45.7Mโœ“ Clear
James Rial, M.D.Salisbury, MD$45.2Mโœ“ Clear
Joseph Schwartz, M.D.Salisbury, MD$44.0Mโœ“ 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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