MR. MATTHEW S. BAY (P.A.) – Surgical Physician Assistant, NPI 1033359401
Surgical Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,678 PHYSICIAN ASSISTANT in WI
Provider Addresses for MR. MATTHEW S. BAY (P.A.)
1818 N. MEADE ST SUITE 240 WEST
FOX VALLEY SURGICAL ASSOCIATES
APPLETON, WI 549113496
Phone: (920) 731-8289
Fax: (920) 832-0444
Type: Mailing
2000 E MILESTONE DR
FOX VALLEY SURGICAL ASSOCIATES
APPLETON, WI 549136701
Phone: (920) 731-8131
Fax: (920) 832-0444
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: 2009-04-23
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 |
|---|---|---|---|---|
| I20090423000655 | I | Physician Assistant | WI | 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 54911)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery, Vascular Surgery | WI | |
| General Surgery | NY | |
| Nurse Practitioner | WI | |
| Vascular Surgery | WI | |
| General Surgery, Colorectal Surgery (Proctology) | WI | |
| Nurse Practitioner | WI | |
| General Surgery | IN | |
| Physician Assistant | WI | |
| Physician Assistant | WI | |
| General Surgery, Surgical Oncology | WI |
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