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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. Steven Chang
๐Ÿ‘๏ธ
MDIndividual

Steven Chang, M.D.

NPI: 1174598239
Ventura, CA
10 years of data
Ophthalmology
$5.7M
Total Payments
33.1K
Beneficiaries
52.8K
Services
2.45x
Markup Ratio

Peer Comparison

97th
percentile in specialty
This provider$5.7M
Specialty median$383.7K

๐Ÿ“‹ Key Findings

1Billed $5.7M over 10 years
22.45x markup ratio (above median)
397th percentile in Ophthalmology by payments
48 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $5.7M in total Medicare payments ranks in the 97th percentile of Ophthalmology providers nationally.

This provider's billing patterns fall within normal ranges for their specialty.

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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$342.04$137.532.49x$204.51$483.8K4.6K2.9K
2015$421.88$187.952.24x$233.93$508.2K4.5K2.9K
2016$431.60$185.802.32x$245.80$568.6K4.9K3.1K
2017$527.27$228.062.31x$299.21$589.5K5.1K3.2K
2018$589.56$224.982.62x$364.58$640.5K5.5K3.5K
2019$579.63$228.982.53x$350.65$659.9K5.8K3.6K
2020$595.14$227.712.61x$367.43$573.3K5.1K3.2K
2021$352.72$124.992.82x$227.73$591.2K5.8K3.5K
2022$344.50$118.202.91x$226.30$559.0K5.8K3.5K
2023$353.24$121.962.90x$231.28$548.8K5.8K3.6K

Top Procedures (20)

66984Removal of cataract with insertion of lensโš  3.4x markup
$1.6M
3.0K services$517.03/svc3.38x markup
92012Eye and medical examination for diagnosis and treatment, established patient
$1.4M
20.3K services$68.99/svc1.77x markup
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits
$888.3K
9.6K services$92.91/svc1.88x markup
66821Removal of recurring cataract in lens capsule using laser
$446.3K
1.6K services$286.24/svc2.16x markup
68761Closure of tear duct opening using plug
$254.3K
3.3K services$78.19/svc2.69x markup
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits
$239.5K
2.2K services$107.66/svc1.93x markup
65778Insertion of amniotic membrane to eye surface
$219.1K
167 services$1.3K/svc1.61x markup
92083Measurement of field of vision during daylight conditionsโš  3.0x markup
$114.5K
2.3K services$49.11/svc3.03x markup
92136Measurement of corneal curvature and depth of eyeโš  3.4x markup
$95.7K
3.2K services$30.15/svc3.36x markup
0191TInternal insertion of eye fluid drainage device
$93.0K
165 services$563.90/svc2.66x markup
92250Photography of the retina
$92.8K
2.1K services$43.49/svc2.90x markup
65855Laser repair to improve eye fluid flow, 1 or more sessionsโš  3.7x markup
$64.3K
297 services$216.45/svc3.66x markup
92002Eye and medical examination for diagnosis and treatment, new patient
$52.5K
850 services$61.80/svc2.26x markup
67820Removal of eyelashes by forcepsโš  3.9x markup
$50.2K
1.9K services$26.45/svc3.93x markup
67840Removal of eyelid growth
$48.0K
187 services$256.80/svc1.70x markup
92071Fitting of contact lens for treatment of ocular surface diseaseโš  3.1x markup
$39.4K
1.3K services$31.29/svc3.06x markup
66982Removal of cataract with insertion of lens
$27.2K
40 services$678.95/svc3.00x markup
68810Insertion of probe into the tear duct
$12.5K
73 services$171.90/svc2.57x markup
68440Snip incision of tear-drainage opening at inner corner of the eyeโš  3.6x markup
$4.8K
47 services$102.42/svc3.63x markup
65210Removal of foreign body in external eye, conjunctiva or scleraโš  3.8x markup
$4.2K
114 services$36.83/svc3.76x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
66984Removal of cataract with insertion of lens3.0K$1.6M$517.033.38x
92012Eye and medical examination for diagnosis and treatment, established patient20.3K$1.4M$68.991.77x
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits9.6K$888.3K$92.911.88x
66821Removal of recurring cataract in lens capsule using laser1.6K$446.3K$286.242.16x
68761Closure of tear duct opening using plug3.3K$254.3K$78.192.69x
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits2.2K$239.5K$107.661.93x
65778Insertion of amniotic membrane to eye surface167$219.1K$1.3K1.61x
92083Measurement of field of vision during daylight conditions2.3K$114.5K$49.113.03x
92136Measurement of corneal curvature and depth of eye3.2K$95.7K$30.153.36x
0191TInternal insertion of eye fluid drainage device165$93.0K$563.902.66x
92250Photography of the retina2.1K$92.8K$43.492.90x
65855Laser repair to improve eye fluid flow, 1 or more sessions297$64.3K$216.453.66x
92002Eye and medical examination for diagnosis and treatment, new patient850$52.5K$61.802.26x
67820Removal of eyelashes by forceps1.9K$50.2K$26.453.93x
67840Removal of eyelid growth187$48.0K$256.801.70x
92071Fitting of contact lens for treatment of ocular surface disease1.3K$39.4K$31.293.06x
66982Removal of cataract with insertion of lens40$27.2K$678.953.00x
68810Insertion of probe into the tear duct73$12.5K$171.902.57x
68440Snip incision of tear-drainage opening at inner corner of the eye47$4.8K$102.423.63x
65210Removal of foreign body in external eye, conjunctiva or sclera114$4.2K$36.833.76x

Markup Analysis

Charge-to-Payment Ratio

2.45x

This provider submits charges 2.45 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.45x means for every $100 Medicare pays, this provider initially charges $245. This is higher than the national average.

Location

Ventura, CA

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 CA for peer comparison.

Steven Chang (you)
$5.7M
Nathan Steinle, M.D.
$63.1M
Stephen Couvillion, MD
$47.7M
Margaret Chang, M.D.
$47.6M
David Boyer, MD
$47.5M
Alessandro Castellarin, M.D.
$46.9M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Nathan Steinle, M.D.Santa Barbara, CA$63.1Mโœ“ Clear
Stephen Couvillion, MDSanta Barbara, CA$47.7Mโœ“ Clear
Margaret Chang, M.D.Sacramento, CA$47.6Mโœ“ Clear
David Boyer, MDLos Angeles, CA$47.5Mโœ“ Clear
Alessandro Castellarin, M.D.Santa Barbara, CA$46.9Mโœ“ 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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