George Katsamakis, M.D.
NPI 1174502835ActiveIndividual· Psychiatry & Neurology, Neurology· Lake Barrington, IL
Psychiatry & Neurology, Neurology (M.D.) in Lake Barrington, Illinois, trained at Rush Medical College of Rush University (class of 1994). 338 Medicare patients in 2024, $1,608,514 paid; nearly all of their 2,774 Part D prescriptions were generic (91%). Tg Therapeutics, Inc. was the largest of 30 companies reporting payments in 2025, $29,088 in all, mostly speaking and faculty fees.
Overview
| NPI | 1174502835 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 11, 2006 |
| Last updated in NPPES | Mar 7, 2023 |
| Certified by provider | Dec 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 036094580 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 40,407 across 40 procedure codes |
| Paid by Medicare | $1,608,514 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,774 · 4,796 30-day fills |
|---|---|
| Patients | 406 |
| Total drug cost | $2,160,225 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Northwest Neurology, LtdLake Barrington, IL · 30 clinicians
Hospital affiliations
- Advocate Illinois Masonic Medical CenterChicago, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
- St Alexius Medical CenterHoffman Estates, IL
Industry payments (Open Payments)
- 2025$29,088 · 138 payments from 30 companies
- 2024$28,754 · 114 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tg Therapeutics, Inc. | $21,436 | 23 |
| Novartis Pharmaceuticals Corporation | $5,440 | 18 |
| Emd Serono, Inc. | $288.58 | 7 |
| Abbvie Inc. | $278.03 | 24 |
| Genentech USA, Inc. | $173.87 | 10 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$20,408 · 7 payments
- Consulting Fee$5,050 · 1 payment
- Food and Beverage$3,349 · 128 payments
- Travel and Lodging$281.98 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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