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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. Kenneth Grossman
๐Ÿ‘๏ธ
MDIndividual

Kenneth Grossman, M.D.

NPI: 1184684672
Merced, CA
10 years of data
Ophthalmology
$10.9M
Total Payments
74.4K
Beneficiaries
120.2K
Services
3.05x
Markup Ratio

Peer Comparison

98th
percentile in specialty
This provider$10.9M
Specialty median$383.7K

๐Ÿ“‹ Key Findings

1Billed $10.9M over 10 years
23.05x markup ratio (above median)
398th percentile in Ophthalmology by payments
412 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $10.9M in total Medicare payments ranks in the 98th 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$681.59$178.963.81x$502.63$1.0M11.7K6.6K
2015$650.61$163.463.98x$487.15$1.0M11.5K6.7K
2016$656.91$167.623.92x$489.29$1.0M11.0K6.7K
2017$680.79$169.944.01x$510.85$1.1M11.3K6.8K
2018$765.01$182.204.20x$582.81$1.1M11.7K7.5K
2019$758.76$184.214.12x$574.55$1.1M12.2K7.7K
2020$701.28$162.394.32x$538.89$981.8K11.5K7.3K
2021$515.08$166.903.09x$348.18$1.1M12.9K8.2K
2022$441.49$172.482.56x$269.01$1.2M13.6K8.6K
2023$448.42$179.542.50x$268.88$1.2M12.9K8.2K

Top Procedures (20)

92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits
$2.5M
27.1K services$92.24/svc1.64x markup
92012Eye and medical examination for diagnosis and treatment, established patient
$1.9M
28.9K services$66.30/svc1.56x markup
66984Removal of cataract with insertion of lensโš  5.3x markup
$1.3M
2.6K services$486.85/svc5.26x markup
J0178Injection, aflibercept, 1 mg
$856.8K
1.2K services$740.53/svc2.86x markup
67028Injection of drug into eyeโš  7.6x markup
$458.4K
4.8K services$95.58/svc7.61x markup
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits
$319.1K
3.1K services$104.55/svc1.55x markup
92134Diagnostic imaging of retinaโš  3.6x markup
$313.7K
9.6K services$32.52/svc3.63x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$278.5K
4.5K services$61.44/svc1.64x markup
66821Removal of recurring cataract in lens capsule using laserโš  4.2x markup
$273.4K
1.1K services$255.56/svc4.23x markup
68761Closure of tear duct opening using plug
$272.4K
1.8K services$155.54/svc2.77x markup
92250Photography of the retinaโš  3.6x markup
$248.0K
6.7K services$36.94/svc3.59x markup
66982Removal of cataract with insertion of lensโš  3.9x markup
$246.7K
399 services$618.19/svc3.91x markup
92083Measurement of field of vision during daylight conditions
$232.1K
4.8K services$48.59/svc2.77x markup
15823Removal of excessive skin and fat of upper eyelidโš  3.5x markup
$205.9K
275 services$748.91/svc3.50x markup
92136Measurement of corneal curvature and depth of eyeโš  9.5x markup
$152.5K
2.8K services$53.76/svc9.50x markup
99204New patient office or other outpatient visit, typically 45 minutes
$145.8K
1.3K services$114.55/svc1.85x markup
66183Insertion of eye fluid drainage deviceโš  4.0x markup
$123.9K
144 services$860.34/svc3.95x markup
92133Diagnostic imaging of optic nerve of eyeโš  4.2x markup
$119.0K
3.9K services$30.86/svc4.15x markup
J7999Compounded drug, not otherwise classifiedโš  3.4x markup
$96.7K
1.5K services$62.65/svc3.37x markup
68801Dilation of tear-drainage openingโš  3.6x markup
$90.3K
889 services$101.53/svc3.57x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
92014Eye and medical examination for diagnosis and treatment, established patient, 1 or more visits27.1K$2.5M$92.241.64x
92012Eye and medical examination for diagnosis and treatment, established patient28.9K$1.9M$66.301.56x
66984Removal of cataract with insertion of lens2.6K$1.3M$486.855.26x
J0178Injection, aflibercept, 1 mg1.2K$856.8K$740.532.86x
67028Injection of drug into eye4.8K$458.4K$95.587.61x
92004Eye and medical examination for diagnosis and treatment, new patient, 1 or more visits3.1K$319.1K$104.551.55x
92134Diagnostic imaging of retina9.6K$313.7K$32.523.63x
99213Established patient office or other outpatient visit, typically 15 minutes4.5K$278.5K$61.441.64x
66821Removal of recurring cataract in lens capsule using laser1.1K$273.4K$255.564.23x
68761Closure of tear duct opening using plug1.8K$272.4K$155.542.77x
92250Photography of the retina6.7K$248.0K$36.943.59x
66982Removal of cataract with insertion of lens399$246.7K$618.193.91x
92083Measurement of field of vision during daylight conditions4.8K$232.1K$48.592.77x
15823Removal of excessive skin and fat of upper eyelid275$205.9K$748.913.50x
92136Measurement of corneal curvature and depth of eye2.8K$152.5K$53.769.50x
99204New patient office or other outpatient visit, typically 45 minutes1.3K$145.8K$114.551.85x
66183Insertion of eye fluid drainage device144$123.9K$860.343.95x
92133Diagnostic imaging of optic nerve of eye3.9K$119.0K$30.864.15x
J7999Compounded drug, not otherwise classified1.5K$96.7K$62.653.37x
68801Dilation of tear-drainage opening889$90.3K$101.533.57x

Markup Analysis

Charge-to-Payment Ratio

3.05x

This provider submits charges 3.05 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.05x means for every $100 Medicare pays, this provider initially charges $305. This is higher than the national average.

Location

Merced, 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.

Kenneth Grossman (you)
$10.9M
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.

Believe this data is inaccurate? Dispute this data