DEAN G KARAHALIOS (MD) – Neurological Surgery Physician, NPI 1245205210
Neurological Surgery Physician
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NPPES metrics only — not quality of care.
156 NEUROSURGERY in WI
Provider Addresses for DEAN G KARAHALIOS (MD)
2900 W Oklahoma Ave
Milwaukee, WI 532154330
Phone: (414) 649-6000
Fax: (847) 723-2041
Type: Location
3551 Highland Ave Ste 200A
Downers Grove, IL 605152100
Phone: (844) 376-3876
Type: Location
3825 HIGHLAND AVE STE 306
DOWNERS GROVE, IL 605151562
Phone: (630) 929-0633
Type: Mailing
1700 LUTHER LN STE 1170
PARK RIDGE, IL 600681270
Phone: (844) 376-3876
Type: Location
1700 LUTHER LANE
SUITE 1170
PARK RIDGE, IL 60068
Phone: (844) 376-3876
Fax: (847) 723-2041
Type: Mailing
4501, North Winchester Avenue, West Ravenswood, Lincoln Square, Chicago, Lake View Township, Cook County, Illinois, 60640, United States
3RD FL
CHICAGO, IL 60640
Phone: (773) 250-0500
Fax: (773) 250-0497
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 36 Open Payments records for all available years, with a total value of $32,323.
Total Amount is formed as General ($32,323) + Research ($0) + Ownership ($0) = $32,323.
Last reported payment date: 2024-11-25 • Largest payer in this snapshot: Medtronic, Inc. ($16,314).
Total Amount
$32,323
General + Research + Ownership
Payments
36
Total payment records
General Amount
$32,323
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $16,314 |
| Zimmer Biomet Holdings, Inc. | $15,863 |
| Elekta, Inc. | $146 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-02-19
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050117000050 | I | Neurosurgery | IL | TBD |
| I20210219000996 | I | Neurosurgery | WI | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 55 | 50 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 54 | 54 | $0 |
| 22614 | Fusion of additional segment of spine | 50 | 16 | $0 |
| 63048 | Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | 32 | 14 | $0 |
| 61783 | Computer-assisted spinal procedure | 30 | 29 | $0 |
Insurance plans in this area (ZIP 53215)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | IL | |
| A N E S T H E S I O L O G Y | IL | |
| - | MN | |
| - | IL | |
| - | IL | |
| Rheumatology, Internal Medicine | IL | |
| - | IL | |
| Internal Medicine | IL | |
| P S Y C H I A T R Y | IL | |
| - | IL |
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