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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. Joseph Kerendian
๐Ÿ‘๏ธ
MDIndividual

Joseph Kerendian, MD

NPI: 1386643815
Northridge, CA
10 years of data
Ophthalmology
$5.7M
Total Payments
59.7K
Beneficiaries
71.6K
Services
2.47x
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
22.47x markup ratio (above median)
397th percentile in Ophthalmology by payments
410 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$378.49$147.762.56x$230.73$577.2K6.9K5.7K
2015$417.91$160.982.60x$256.93$534.9K6.6K5.5K
2016$393.75$147.552.67x$246.20$568.7K7.5K6.3K
2017$432.81$150.222.88x$282.59$565.7K7.5K6.3K
2018$613.98$225.452.72x$388.53$623.1K7.6K6.3K
2019$640.91$220.342.91x$420.57$648.2K7.6K6.4K
2020$572.50$193.672.96x$378.83$498.8K6.3K5.3K
2021$492.19$192.282.56x$299.91$533.2K6.7K5.7K
2022$622.06$219.522.83x$402.54$572.5K7.3K6.0K
2023$708.33$270.702.62x$437.63$605.9K7.5K6.3K

Top Procedures (20)

66984Removal of cataract with insertion of lensโš  3.5x markup
$1.2M
2.3K services$511.43/svc3.52x markup
92012Eye and medical examination for diagnosis and treatment, established patient
$1.2M
16.9K services$70.04/svc1.43x markup
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits
$1.2M
11.7K services$98.43/svc1.78x markup
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits
$393.3K
3.5K services$113.87/svc1.54x markup
92020Examination of cornea and iris using lens device and slit lampโš  3.4x markup
$313.4K
14.1K services$22.30/svc3.36x markup
92133Diagnostic imaging of optic nerve of eyeโš  3.9x markup
$298.6K
9.3K services$32.22/svc3.88x markup
92250Photography of the retinaโš  3.0x markup
$225.3K
3.9K services$57.97/svc3.02x markup
66821Removal of recurring cataract in lens capsule using laser
$197.5K
684 services$288.73/svc2.08x markup
15823Removal of excessive skin and fat of upper eyelid
$180.0K
228 services$789.37/svc2.53x markup
92134Diagnostic imaging of retinaโš  3.6x markup
$142.4K
4.1K services$35.11/svc3.56x markup
66174Dilation to improve eye fluid flow
$128.6K
176 services$730.69/svc2.46x markup
68761Closure of tear duct opening using plug
$119.2K
1.2K services$98.75/svc1.80x markup
92136Measurement of corneal curvature and depth of eyeโš  4.9x markup
$49.0K
1.6K services$30.82/svc4.87x markup
65855Laser repair to improve eye fluid flow, 1 or more sessionsโš  3.7x markup
$44.5K
207 services$215.13/svc3.72x markup
65778Placement of amniotic membrane on eye surface for wound healing
$22.9K
18 services$1.3K/svc1.73x markup
92083Measurement of field of vision during daylight conditions
$14.8K
271 services$54.46/svc2.75x markup
66761Creation of eye fluid drainage tracts in iris using laser, per session
$13.4K
50 services$267.19/svc2.99x markup
76514Ultrasound of corneal structure and measurementโš  11.1x markup
$11.2K
1.0K services$11.05/svc11.05x markup
66710Destruction of lens tissue using laserโš  3.5x markup
$11.0K
32 services$343.67/svc3.49x markup
65820Incision to improve eye fluid flowโš  5.2x markup
$10.8K
31 services$347.40/svc5.18x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
66984Removal of cataract with insertion of lens2.3K$1.2M$511.433.52x
92012Eye and medical examination for diagnosis and treatment, established patient16.9K$1.2M$70.041.43x
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits11.7K$1.2M$98.431.78x
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits3.5K$393.3K$113.871.54x
92020Examination of cornea and iris using lens device and slit lamp14.1K$313.4K$22.303.36x
92133Diagnostic imaging of optic nerve of eye9.3K$298.6K$32.223.88x
92250Photography of the retina3.9K$225.3K$57.973.02x
66821Removal of recurring cataract in lens capsule using laser684$197.5K$288.732.08x
15823Removal of excessive skin and fat of upper eyelid228$180.0K$789.372.53x
92134Diagnostic imaging of retina4.1K$142.4K$35.113.56x
66174Dilation to improve eye fluid flow176$128.6K$730.692.46x
68761Closure of tear duct opening using plug1.2K$119.2K$98.751.80x
92136Measurement of corneal curvature and depth of eye1.6K$49.0K$30.824.87x
65855Laser repair to improve eye fluid flow, 1 or more sessions207$44.5K$215.133.72x
65778Placement of amniotic membrane on eye surface for wound healing18$22.9K$1.3K1.73x
92083Measurement of field of vision during daylight conditions271$14.8K$54.462.75x
66761Creation of eye fluid drainage tracts in iris using laser, per session50$13.4K$267.192.99x
76514Ultrasound of corneal structure and measurement1.0K$11.2K$11.0511.05x
66710Destruction of lens tissue using laser32$11.0K$343.673.49x
65820Incision to improve eye fluid flow31$10.8K$347.405.18x

Markup Analysis

Charge-to-Payment Ratio

2.47x

This provider submits charges 2.47 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.47x means for every $100 Medicare pays, this provider initially charges $247. This is higher than the national average.

Location

Northridge, 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.

Joseph Kerendian (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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