Medicare Enrolled
Dr. Kenneth Grossman, M.D.
Ophthalmology · Merced, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Grossman from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Grossman
Dr. Kenneth Grossman is an ophthalmology specialist in Merced, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Grossman performed 15,640 Medicare services across 8,142 unique beneficiaries.
Between the years covered by Open Payments, Dr. Grossman received a total of $2,747 from 26 pharmaceutical and/or device companies across 160 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Grossman is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 7% volume in CA
$2,747 industry payments
Medicare Practice Summary
Medicare Utilization ↗15,640
Medicare services
Top 7% in CA for ophthalmology
8,142
Unique beneficiaries
$87
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~782 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
2,982 | $90 | $175 |
| Eye exam, established patient, focused A limited examination of the visual system for an existing patient. The provider focuses on a specific eye-related concern or symptom. |
2,771 | $67 | $124 |
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
2,404 | $5 | $14 |
| Retinal photography (fundus photo) This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures. |
1,311 | $28 | $54 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
1,097 | $29 | $57 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
559 | $67 | $124 |
| Eye injection for retinal disease A procedure involving the administration of medication directly into the eye. |
531 | $104 | $754 |
| Visual field test, extended A test that maps your complete field of vision to detect blind spots or peripheral vision loss. Extended testing provides a more detailed assessment than a standard visual field exam. |
463 | $45 | $87 |
| Bevacizumab injection, 10 mg Administration of a 10 mg dose of bevacizumab medication via injection. |
462 | $56 | $206 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
401 | $101 | $225 |
| Aflibercept eye injection (Eylea) | 391 | $693 | $1,995 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
386 | $27 | $51 |
| Cataract surgery with lens implant Surgical removal of the clouded natural lens of the eye and replacement with an artificial prosthetic lens to restore vision. |
292 | $440 | $1,000 |
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
266 | $35 | $75 |
| Eyelash removal with forceps This procedure involves the manual removal of eyelashes using forceps. It is a mechanical extraction method performed on the eyelid area. |
173 | $16 | $198 |
| Removal of foreign body from external eye This procedure involves the removal of a foreign object from the conjunctiva, which is the clear tissue covering the white part of the eye. |
154 | $22 | $43 |
| Tear duct plug insertion A procedure to insert a small plug into the tear duct opening to help retain tears on the eye surface. |
152 | $148 | $324 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
140 | $245 | $459 |
| Incision and drainage of eye cyst A procedure to make a small cut and drain fluid from a cyst on the eye. |
71 | $107 | $288 |
| Dilation of tear drainage opening A procedure to widen the opening of the tear drainage system to improve the flow of tears from the eye. |
65 | $82 | $156 |
| Cataract removal with artificial lens and drainage device insertion Surgical removal of the eye's natural lens followed by the insertion of an artificial lens and a drainage device into the front chamber of the eye. |
60 | $485 | $2,000 |
| Dilation of eye fluid drainage A procedure to widen the drainage pathways in the eye to help fluid flow out more easily. |
57 | $275 | $1,200 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
56 | $108 | $169 |
| Complex cataract removal with lens implant A surgical procedure to remove a cataract from the eye and insert an artificial lens to restore vision. |
46 | $595 | $1,100 |
| CT scan of cornea A computed tomography scan used to create detailed images of the cornea, the clear front part of the eye. |
43 | $28 | $51 |
| Removal of excessive skin and fat of upper eyelid | 31 | $757 | $1,748 |
| Ultrasound of eye tissue and structures A diagnostic imaging test that uses sound waves to create pictures of the eye's internal tissues and structures. |
31 | $31 | $70 |
| Eye drainage system examination An examination of the internal drainage system of the eye to assess how fluid flows and drains from the eye. |
31 | $22 | $55 |
| Chemical nerve block for facial paralysis Injection of a chemical agent to paralyze specific nerves or muscles on the side of the face. |
25 | $129 | $236 |
| Removal of foreign body from external eye This procedure involves the removal of a foreign object from the surface of the eye, specifically from the conjunctiva or sclera. |
23 | $28 | $58 |
| Corneal conjunctiva removal or relocation with graft A surgical procedure to remove or move the conjunctiva tissue covering the cornea and replace it with a graft. |
23 | $543 | $938 |
| Eye photography Photographic imaging of the interior structures of the eye. |
22 | $15 | $83 |
| Fluorescein angiography of retina An eye exam that uses a special camera and injected dye to capture images of blood flow in the retina. |
19 | $69 | $92 |
| Tear duct repair by heat, tying, or laser A procedure to repair a tear duct opening using heat, tying, or laser surgery. |
18 | $210 | $374 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
18 | $72 | $125 |
| Incision to improve eye fluid flow A surgical procedure involving an incision to enhance the drainage of fluid within the eye. |
17 | $686 | $1,500 |
| Insertion of probe into nasal tear duct | 17 | $148 | $424 |
| Retinal angiography with dye injection This procedure uses a special camera to examine the blood vessels in the retina after a dye has been injected into the body. |
17 | $117 | $193 |
| Removal of eye fluid | 15 | $99 | $174 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
1.9% high complexity
34.3% medium
63.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$2,747
Total received (2018-2024)
Avg $392/year across 7 years
Top 36% in CA for ophthalmology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
26
Companies
160
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$2,719 (99.0%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$29 (1.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$525
2023
$760
2022
$492
2021
$345
2020
$150
2019
$310
2018
$164
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$206
Sight Sciences, Inc.
$89
Alcon Vision LLC
$69
Apellis Pharmaceuticals, Inc.
$67
Alimera Sciences, Inc.
$36
Bausch & Lomb Americas Inc.
$24
Tarsus Pharmaceuticals, Inc.
$20
Amgen Inc.
$15
Top 3 companies account for 69.3% of 2024 payments
All-time payments by company (2018-2024) ›
ABBVIE INC.
$363
Alimera Sciences, Inc.
$339
Alcon Vision LLC
$302
Aerie Pharmaceuticals, Inc.
$227
Allergan, Inc.
$183
Vanda Pharmaceuticals Inc.
$181
Sight Sciences, Inc.
$148
Apellis Pharmaceuticals, Inc.
$140
Glaukos Corporation
$130
Novartis Pharmaceuticals Corporation
$117
GLAUKOS CORPORATION
$99
Mallinckrodt Hospital Products Inc.
$64
Johnson & Johnson Vision Care, Inc.
$63
Regeneron Healthcare Solutions, Inc.
$53
Bausch & Lomb Americas Inc.
$46
Genentech USA, Inc.
$38
Horizon Therapeutics plc
$35
RxSight Inc
$31
TISSUETECH, INC.
$30
Sun Pharmaceutical Industries Inc.
$30
Kala Pharmaceuticals, Inc.
$29
Bausch & Lomb, a division of Bausch Health US, LLC
$29
Allergan Inc.
$23
Tarsus Pharmaceuticals, Inc.
$20
Amgen Inc.
$15
Ivantis, Inc
$15
Top 3 companies account for 36.5% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AcrySof IQ PanOptix · AcrySof IQ PanOptix UV IOL · AcrySof IQ VIVITY IOL · Acuvue · Clareon · DUPIXENT DUPILUMAB INJECTION · DUREZOL · DURYSTA · HETLIOZ · HYDRUS Microstent · Hydrus · IACCESS · ILUVIEN · INVELTYS · ISTENT INJECT W · Iluvien · KXL system (not refurbished) · LUMIGAN · OMNI SURGICAL SYSTEM · OMNI(R) SURGICAL SYSTEM (US) · PROKERA · RXSIGHT CONTACT LENS · Rhopressa · Rocklatan · Syfovre · TEPEZZA · TRAVATAN Z · VABYSMO · VUITY · VYZULTA · Vabysmo · XDEMVY · XELPROS · XEN GLAUCOMA TREATMENT SYSTEM · XIIDRA · YUTIQ · iStent inject W · rhopressa · rocklatan
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Ophthalmologists within 10 mi
4
Per 100K population
1.4
County median income
$65,044
Nearest hospital
MERCY MEDICAL CENTER
7.6 mi
7.6 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Grossman is a mixed practice specialist, with above-average Medicare volume (top 7% in CA), with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Grossman experienced with comprehensive eye exam, established patient?
Based on Medicare claims data, Dr. Grossman performed 2,982 comprehensive eye exam, established patient services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Grossman receive payments from pharmaceutical companies?
Yes. Dr. Grossman received a total of $2,747 from 26 companies across 160 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Grossman's costs compare to other ophthalmologists in Merced?
Dr. Grossman's average Medicare payment per service is $87. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Grossman) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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