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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. Miriam Englander-Paschalis Ilios
๐Ÿ‘๏ธ
MDIndividual

Miriam Englander-Paschalis Ilios, M.D.

NPI: 1184853129
Boston, MA
10 years of data
Ophthalmology
$28.1M
Total Payments
190
Beneficiaries
154.0K
Services
3.9x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$28.1M
Specialty median$383.7K

๐Ÿ“‹ Key Findings

1Billed $28.1M over 10 years
23.9x markup ratio (above median)
399th percentile in Ophthalmology by payments
462 services/day โ€” unusually high
5Payments surged 1634% in 2022
618 procedures with >3x markup

This provider averages 62 services per working day

Based on 154.0K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $28.1M in total Medicare payments ranks in the 99th percentile of Ophthalmology providers nationally.

Averaging 62 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 854% from 2014 to 2023.

72% of their billing comes from a single procedure code (J0178 โ€” Injection, aflibercept, 1 mg).

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 1634% in 2022

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$518.93$136.563.80x$382.37$476.2K3.5K18
2015$566.30$150.113.77x$416.19$1.7M11.1K22
2016$672.08$185.083.63x$487.00$2.5M13.6K21
2017$765.76$196.203.90x$569.56$2.9M14.9K21
2018$849.96$221.023.85x$628.94$3.8M17.2K24
2019$851.47$218.253.90x$633.22$4.5M20.5K21
2020$892.69$226.313.94x$666.38$3.6M15.9K18
2021$754.29$195.723.85x$558.57$224.9K1.1K10
2022$858.52$213.594.02x$644.93$3.9M18.3K17
2023$482.85$119.484.04x$363.37$4.5M38.0K18

Top Procedures (20)

J0178Injection, aflibercept, 1 mgโš  3.3x markup
$20.2M
27.3K services$739.87/svc3.29x markup
67028Injection of drug into eyeโš  10.7x markup
$1.7M
19.5K services$89.60/svc10.69x markup
92014Established patient complete exam of visual systemโš  4.2x markup
$1.5M
16.7K services$92.59/svc4.18x markup
92134Imaging of retinaโš  4.9x markup
$1.4M
42.0K services$32.63/svc4.93x markup
J2778Injection, ranibizumab, 0.1 mg
$777.2K
2.7K services$284.08/svc2.96x markup
J2777Injection, faricimab-svoa, 0.1 mgโš  3.4x markup
$598.1K
20.6K services$29.05/svc3.44x markup
J9035Injection, bevacizumab, 10 mg
$485.5K
8.5K services$57.43/svc1.75x markup
99213Established patient office or other outpatient visit, 20-29 minutesโš  3.8x markup
$297.0K
5.2K services$57.55/svc3.78x markup
92012Established patient problem focused exam of visual systemโš  4.1x markup
$251.2K
3.7K services$67.20/svc4.09x markup
67042Removal of membrane of retina with removal of internal limiting membrane of retinaโš  4.5x markup
$183.3K
196 services$935.36/svc4.53x markup
99204New patient office or other outpatient visit, 45-59 minutesโš  4.9x markup
$86.9K
742 services$117.09/svc4.93x markup
67108Repair of detached retina and drainage of eye fluid between lens and retinaโš  5.9x markup
$75.5K
74 services$1.0K/svc5.88x markup
67145Photocoagulation treatment to prevent detachment of retinaโš  4.8x markup
$74.0K
218 services$339.66/svc4.81x markup
92004New patient complete exam of visual systemโš  4.2x markup
$66.9K
636 services$105.18/svc4.17x markup
99214Established patient office or other outpatient visit, 30-39 minutesโš  3.2x markup
$63.0K
782 services$80.57/svc3.20x markup
92235Imaging of blood vessels in back of eye using fluorescein dyeโš  4.1x markup
$62.2K
466 services$133.52/svc4.14x markup
67228Laser destruction of leaking retinal blood vessels, 1 or more sessionsโš  7.0x markup
$34.4K
92 services$373.58/svc6.96x markup
765122d ultrasound scan of eye tissue and structuresโš  5.6x markup
$29.9K
471 services$63.50/svc5.60x markup
99215Established patient office or other outpatient visit, 40-54 minutesโš  3.5x markup
$28.0K
244 services$114.62/svc3.51x markup
92250Photography of the retinaโš  4.1x markup
$26.4K
500 services$52.86/svc4.07x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J0178Injection, aflibercept, 1 mg27.3K$20.2M$739.873.29x
67028Injection of drug into eye19.5K$1.7M$89.6010.69x
92014Established patient complete exam of visual system16.7K$1.5M$92.594.18x
92134Imaging of retina42.0K$1.4M$32.634.93x
J2778Injection, ranibizumab, 0.1 mg2.7K$777.2K$284.082.96x
J2777Injection, faricimab-svoa, 0.1 mg20.6K$598.1K$29.053.44x
J9035Injection, bevacizumab, 10 mg8.5K$485.5K$57.431.75x
99213Established patient office or other outpatient visit, 20-29 minutes5.2K$297.0K$57.553.78x
92012Established patient problem focused exam of visual system3.7K$251.2K$67.204.09x
67042Removal of membrane of retina with removal of internal limiting membrane of retina196$183.3K$935.364.53x
99204New patient office or other outpatient visit, 45-59 minutes742$86.9K$117.094.93x
67108Repair of detached retina and drainage of eye fluid between lens and retina74$75.5K$1.0K5.88x
67145Photocoagulation treatment to prevent detachment of retina218$74.0K$339.664.81x
92004New patient complete exam of visual system636$66.9K$105.184.17x
99214Established patient office or other outpatient visit, 30-39 minutes782$63.0K$80.573.20x
92235Imaging of blood vessels in back of eye using fluorescein dye466$62.2K$133.524.14x
67228Laser destruction of leaking retinal blood vessels, 1 or more sessions92$34.4K$373.586.96x
765122d ultrasound scan of eye tissue and structures471$29.9K$63.505.60x
99215Established patient office or other outpatient visit, 40-54 minutes244$28.0K$114.623.51x
92250Photography of the retina500$26.4K$52.864.07x

Markup Analysis

Charge-to-Payment Ratio

3.9x

This provider submits charges 3.9 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.9x means for every $100 Medicare pays, this provider initially charges $390. This is higher than the national average.

Location

Boston, MA

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 MA for peer comparison.

Miriam Englander-Paschalis Ilios (you)
$28.1M
Torsten Wiegand, MD
$49.8M
David Reed, M.D.
$44.2M
Chirag Shah, MD
$34.3M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Torsten Wiegand, MDBoston, MA$49.8Mโœ“ Clear
David Reed, M.D.Plymouth, MA$44.2Mโœ“ Clear
Chirag Shah, MDBoston, MA$34.3Mโœ“ 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.

Believe this data is inaccurate? Dispute this data