DR. WILLIAM M ZANDER (D.O.) – Occupational Medicine Physician, NPI 1518038488
Occupational Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. WILLIAM M ZANDER (D.O.)
1221 N HIGHLAND AVE
AURORA, IL 605061404
Phone: (630) 554-3456
Fax: (630) 551-2970
Type: Location
1315, Memorial Drive, Mendota, Mendota Township, LaSalle County, Illinois, 61342, United States
MENDOTA, IL 613421447
Phone: (815) 539-7461
Fax: (815) 539-1461
Type: Location
Wood Duck Lane, Georgetown Charter Township, Ottawa County, Michigan, 49426, United States
OTTAWA, IL 613509685
Phone: (815) 434-1111
Fax: (815) 434-1112
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2016-08-23
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 |
|---|---|---|---|---|
| I20100621000453 | I | Emergency Medicine | IL | TBD |
| I20160823002968 | I | Emergency Medicine | IN | 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 60506)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | IL | |
| - | IL | |
| - | IL | |
| Physician Assistant | MI | |
| Physician Assistant | IL | |
| - | NY | |
| Physician Assistant | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | MI | |
| Physician Assistant | IL |
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