Dean G. Karahalios, MD
NPI 1245205210ActiveIndividual· Neurological Surgery· Scottsdale, AZ
Neurological Surgery (MD) in Scottsdale, Arizona, trained at Northwestern University Feinberg Medical School (class of 1991). 127 Medicare patients in 2024, $124,014 paid; all of their 87 Part D prescriptions were generic. Medtronic, Inc. was the largest of 3 companies reporting payments in 2025, $1,985 in all, mostly royalties and licenses.
Overview
| NPI | 1245205210 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Jul 29, 2026 |
| Certified by provider | Jul 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 22672 | AZ |
| Neurological Surgery | 207T00000X | 036097583 | IL |
| Neurological Surgery | 207T00000X | 74114-20 | WI |
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 - Neurosurgery (AZ); Practitioner - Neurosurgery (IL); Practitioner - Neurosurgery (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 127 |
|---|---|
| Services billed | 346 across 57 procedure codes |
| Paid by Medicare | $124,014 |
Part D prescriptions in 2024
| Prescriptions (claims) | 87 · 90 30-day fills |
|---|---|
| Patients | 31 |
| Total drug cost | $1,288 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Neurosurgery |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Mayo Clinic HospitalPhoenix, AZ
Industry payments (Open Payments)
- 2025$1,985 · 20 payments from 3 companies
- 2024$14,039 · 23 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $1,805 | 11 |
| Orthofix Medical, Inc. | $156.57 | 8 |
| Axogen | $23.08 | 1 |
What the 2025 payments were for
- Royalty or License$1,561 · 4 payments
- Food and Beverage$423.99 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 42 neurosurgeons in Scottsdale · All neurosurgeons in Arizona