DR. REGAN MICHAEL SEIPP (M.D.) – Nephrology Physician, NPI 1306256284
Nephrology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
629 NEPHROLOGY in IL
Provider Addresses for DR. REGAN MICHAEL SEIPP (M.D.)
1860 PAYSPHERE CIR
CHICAGO, IL 606745452
Phone: (630) 469-2000
Type: Mailing
100 Spalding Dr Ste 202
Naperville, IL 605406552
Phone: (630) 873-8889
Type: Location
PO BOX 713260
CHICAGO, IL 606771260
Phone: (630) 469-2000
Type: Mailing
25 N WINFIELD RD STE 405
WINFIELD, IL 601901379
Phone: (630) 873-8889
Fax: (630) 456-7138
Type: Location
100 SPALDING DR STE 202
NAPERVILLE, IL 605406552
Phone: (630) 873-8889
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 66 Open Payments records for all available years, with a total value of $1,650.
Total Amount is formed as General ($1,650) + Research ($0) + Ownership ($0) = $1,650.
Last reported payment date: 2024-10-24 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($434).
Total Amount
$1,650
General + Research + Ownership
Payments
66
Total payment records
General Amount
$1,650
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $434 |
| Travere Therapeutics, Inc. | $322 |
| Ascendis Pharma Inc | $189 |
| Vifor Pharma, Inc. | $158 |
| Bayer Healthcare Pharmaceuticals Inc. | $117 |
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: 2019-06-17
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 |
|---|---|---|---|---|
| I20190617001513 | 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 |
|---|---|---|---|---|
| 36415 | Insertion of needle into vein for collection of blood sample | 488 | 238 | $0 |
| 80069 | Kidney function blood test panel | 472 | 237 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 461 | 162 | $0 |
| 82570 | Creatinine level to test for kidney function or muscle injury | 420 | 219 | $0 |
| 84156 | Total protein level, urine | 329 | 215 | $0 |
Insurance plans in this area (ZIP 60674)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | IL | |
| Physician Assistant | IL | |
| Internal Medicine | IL | |
| Nurse Practitioner | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| - | IL | |
| Physical Therapist In Private Practice | IL |
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