DR. WILLIAM PATRICK ZELLER (M.D.) – Pediatric Endocrinology Physician, NPI 1699738922
Pediatric Endocrinology Physician
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NPPES metrics only — not quality of care.
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Provider Addresses for DR. WILLIAM PATRICK ZELLER (M.D.)
29373 NETWORK PL
CHICAGO, IL 606731293
Phone: (847) 390-5900
Fax: (847) 390-4757
Type: Mailing
2001, North Gary Avenue, Wheaton, DuPage County, Illinois, 60187, United States
SUITE 240
WHEATON, IL 601873055
Phone: (630) 416-4501
Fax: (630) 416-4504
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 14 Open Payments records for all available years, with a total value of $837.
Total Amount is formed as General ($837) + Research ($0) + Ownership ($0) = $837.
Last reported payment date: 2024-11-07 • Largest payer in this snapshot: Abbott Laboratories ($183).
Total Amount
$837
General + Research + Ownership
Payments
14
Total payment records
General Amount
$837
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Abbott Laboratories | $183 |
| SANOFI-AVENTIS U.S. LLC | $131 |
| Ascensia Diabetes Care Us Inc. | $110 |
| Tolmar, Inc. | $108 |
| Chiesi USA, Inc. | $94 |
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: 2011-02-15
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 |
|---|---|---|---|---|
| I20110215001203 | I | Endocrinology | 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 60673)
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