IAN S KATZNELSON (M.D.) – Neurology Physician, NPI 1194779082
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,188 NEUROLOGY in IL
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Provider Addresses for IAN S KATZNELSON (M.D.)
PO BOX 388320
CHICAGO, IL 606388320
Phone: (773) 767-8283
Fax: (773) 767-8320
Type: Mailing
Law Office Of Timothy J Johns, 444, North Northwest Highway, Park Ridge, Cook County, Illinois, 60068, United States
STE 200
PARK RIDGE, IL 600683263
Phone: (847) 825-2366
Fax: (847) 825-2513
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 51 Open Payments records for all available years, with a total value of $863.
Total Amount is formed as General ($863) + Research ($0) + Ownership ($0) = $863.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: ABBVIE INC. ($371).
Total Amount
$863
General + Research + Ownership
Payments
51
Total payment records
General Amount
$863
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $371 |
| W. L. Gore & Associates, Inc. | $143 |
| SK Life Science, Inc. | $123 |
| JAZZ PHARMACEUTICALS INC. | $114 |
| Alexion Pharmaceuticals, Inc. | $95 |
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: 2005-05-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20050523001238 | I | Neurology | IL | 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 | 542 | 400 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 140 | 125 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 99 | 83 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 57 | 57 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 57 | 57 | $0 |
Insurance plans in this area (ZIP 60638)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEUROLOGY | IL | 95819 | Measurement and recording of brain wave (EEG) activity, awake and asleep | 12 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| Diagnostic Radiology, Interventional Radiology | IL | |
| P A T H O L O G Y | IL | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology), Internal Medicine | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| Internal Medicine | IL | |
| Cardiac Electrophysiology, Cardiovascular Disease (Cardiology), Internal Medicine | MN | |
| - | IL | |
| Physical Therapist In Private Practice | IL | |
| Nurse Practitioner | IL |
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