NADER ISMAIL (DO) – Nephrology Physician, NPI 1689135618
Nephrology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
269 NEPHROLOGY in IN
Provider Addresses for NADER ISMAIL (DO)
120 W 22ND ST
OAK BROOK, IL 605231557
Phone: (630) 573-5000
Type: Mailing
90 W 86TH AVE
MERRILLVILLE, IN 464107086
Phone: (219) 791-1555
Type: Location
Harvester Drive, Burr Ridge, DuPage County, Illinois, 65027, United States
BURR RIDGE, IL 605276686
Phone: (773) 702-1150
Type: Mailing
1304, Ridge Avenue, South Evanston, Evanston, Evanston Township, Cook County, Illinois, 60201, United States
EVANSTON, IL 602011700
Phone: (847) 570-2700
Type: Location
5615 US Highway 6
Portage, IN 463685213
Phone: (219) 462-6001
Type: Location
5841 S MARYLAND AVE # MC5100
CHICAGO, IL 606371443
Phone: (773) 702-3630
Fax: (773) 753-8301
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 15 Open Payments records for all available years, with a total value of $367.
Total Amount is formed as General ($367) + Research ($0) + Ownership ($0) = $367.
Last reported payment date: 2024-10-31 • Largest payer in this snapshot: Travere Therapeutics, Inc. ($70).
Total Amount
$367
General + Research + Ownership
Payments
15
Total payment records
General Amount
$367
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-31
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2024-07-02
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 |
|---|---|---|---|---|
| I20240502002113 | I | Nephrology | IN | TBD |
| I20240702000324 | I | Nephrology | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 60523)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E P H R O L O G Y | IL | |
| Nephrology, Internal Medicine | IL | |
| Nurse Practitioner | IN | |
| N E P H R O L O G Y | IL | |
| - | IN | |
| N E P H R O L O G Y | IL | |
| N E P H R O L O G Y | IN | |
| N E P H R O L O G Y | IL | |
| - | IN | |
| N E P H R O L O G Y | IL |
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