DR. RYAN MICHAEL WEISS (MD) – Nephrology Physician, NPI 1295239762
Nephrology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
629 NEPHROLOGY in IL
Provider Addresses for DR. RYAN MICHAEL WEISS (MD)
120 W 22ND ST
OAK BROOK, IL 605231557
Phone: (630) 573-5000
Fax: (630) 491-5472
Type: Mailing
180 HARVESTER DR STE 110
BURR RIDGE, IL 605276686
Phone: (773) 702-1150
Type: Mailing
5841 S MARYLAND AVE
CHICAGO, IL 606371443
Phone: (773) 702-1150
Type: Location
440, 5th Street, Manhattan Beach, Los Angeles County, California, 90266, United States
MANHATTAN BEACH, CA 902665714
Phone: (818) 321-1491
Type: Mailing
Lake Cumberland Regional Hospital, 305, Langdon Street, Somerset, Pulaski County, Kentucky, 42501, United States
SOMERSET, KY 425032750
Phone: (606) 679-7441
Type: Location
5841 S Maryland Ave
Chicago, IL 606371443
Phone: (773) 702-1150
Type: Location
2055 W Army Trail Rd Ste 110E
Addison, IL 601011478
Phone: (708) 354-1306
Fax: (708) 354-1538
Type: Location
5201 WILLOW SPRINGS RD STE 260
LA GRANGE HIGHLANDS, IL 605256537
Phone: (708) 354-1306
Fax: (708) 354-1538
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 30 Open Payments records for all available years, with a total value of $699.
Total Amount is formed as General ($699) + Research ($0) + Ownership ($0) = $699.
Last reported payment date: 2024-10-30 • Largest payer in this snapshot: Novartis Pharmaceuticals Corporation ($93).
Total Amount
$699
General + Research + Ownership
Payments
30
Total payment records
General Amount
$699
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-30
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: 2023-04-21
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 |
|---|---|---|---|---|
| I20230421002475 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 90960 | Dialysis services, 4 or more physician visits per month (20 years or older) | 155 | 51 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 108 | 56 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 90 | 42 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 45 | 45 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 19 | 14 | $0 |
Insurance plans in this area (ZIP 60523)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nephrology, Internal Medicine | IL | |
| Nephrology, Internal Medicine | IL | |
| Nephrology, Internal Medicine | IL | |
| - | IN | |
| N E P H R O L O G Y | IL | |
| N E P H R O L O G Y | IL | |
| Nephrology, Internal Medicine | IL | |
| N E P H R O L O G Y | IL | |
| N E P H R O L O G Y | IL | |
| - | IL |
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