Dr. George Katsamakis, M.D.
What this data tells you about Dr. Katsamakis
Dr. George Katsamakis is a neurology specialist in Lake Barrington, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Katsamakis performed 20,579 Medicare services across 651 unique beneficiaries.
Between the years covered by Open Payments, Dr. Katsamakis received a total of $209,814 from 52 pharmaceutical and/or device companies across 657 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Katsamakis 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.
Medicare Practice Summary
Medicare Utilization ↗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 |
|---|---|---|---|
| Ocrelizumab infusion (Ocrevus) for MS | 16,800 | $40 | $130 |
| MRI contrast dye injection (gadobutrol) | 2,800 | $0 | $2 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
322 | $123 | $300 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
167 | $3 | $30 |
| 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. |
111 | $84 | $250 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
83 | $44 | $233 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
63 | $19 | $98 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
54 | $11 | $54 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
53 | $89 | $500 |
| 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. |
35 | $57 | $200 |
| MRI of brain with and without contrast An MRI scan of the brain using contrast dye both before and after administration to provide detailed images of brain structures. |
28 | $260 | $3,000 |
| MRI scan of brain, without contrast A magnetic resonance imaging test of the brain that does not use contrast dye. This procedure creates detailed images of the brain's structure using magnetic fields and radio waves. |
25 | $163 | $2,000 |
| 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. |
23 | $126 | $400 |
| New patient office visit, complex (60-74 min) | 15 | $142 | $450 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (70%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in neurology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 4% for neurology in IL.
Geographic Context
0.0 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. Katsamakis is a mixed practice specialist, with above-average Medicare volume (top 2% in IL), with speaking/promotional industry engagement in the top 4% of IL peers, 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. Katsamakis experienced with ocrelizumab infusion (ocrevus) for ms?
Does Dr. Katsamakis receive payments from pharmaceutical companies?
How do Dr. Katsamakis's costs compare to other neurologists in Lake Barrington?
What does Data Coverage mean?
Is this data up to date?
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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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