Nader S. Dahdaleh, M.D.
NPI 1831307339ActiveIndividual· Neurological Surgery· Chicago, IL
Neurological Surgery (M.D.) with Northwestern Medical Faculty Foundation, practicing in Chicago, Illinois. 285 Medicare patients in 2024, $158,002 paid; all of their 169 Part D prescriptions were generic. Medtronic, Inc. was the largest of 4 companies reporting payments in 2025, $921.03 in all, mostly food and beverage. Lists Northwestern Lake Forest Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1831307339 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 18, 2007 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 036131201 | 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 - Neurosurgery (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 285 |
|---|---|
| Services billed | 608 across 50 procedure codes |
| Paid by Medicare | $158,002 |
Part D prescriptions in 2024
| Prescriptions (claims) | 169 · 173 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $1,446 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
Hospital affiliations
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine Delnor Community HospitalGeneva, IL
- Northwestern Medicine Kishwaukee HospitalDekalb, IL
- Northwestern Medicine McHenryMcHenry, IL
Other facilities
- Marianjoy Rehabilitation CenterInpatient rehabilitation facility · Wheaton, IL
Industry payments (Open Payments)
- 2025$921.03 · 10 payments from 4 companies
- 2024$692.20 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $389.97 | 3 |
| Depuy Synthes Sales Inc. | $251.51 | 3 |
| Si-Bone, Inc. | $164.06 | 1 |
| Medical Device Business Services, Inc. | $115.49 | 3 |
What the 2025 payments were for
- Food and Beverage$921.03 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 187 neurosurgeons in Chicago · All neurosurgeons in Illinois