DR. GREGORY T GILLES (MD) – Anesthesiology Physician, NPI 1376500082
Anesthesiology Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,266 ANESTHESIOLOGY in WI
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Provider Addresses for DR. GREGORY T GILLES (MD)
1131, Easthill Place, Wausau Junction, Wausau, Marathon County, Wisconsin, 54403, United States
WAUSAU, WI 544039219
Phone: (715) 298-1901
Type: Mailing
Marshfield Medical Center-Weston, 3400, Ministry Parkway, Weston Medical Center, Village of Weston, Marathon County, Wisconsin, 54476, United States
WESTON, WI 544765220
Phone: (715) 393-2513
Type: Location
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.
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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: 2005-12-19
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 |
|---|---|---|---|---|
| I20051219000591 | I | Anesthesiology | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 00731 | Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 32 | 28 | $0 |
| 01402 | Anesthesia for procedure for total knee joint replacement | 27 | 26 | $0 |
| 00790 | Anesthesia for other procedure on upper abdomen | 17 | 16 | $0 |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | 17 | 17 | $0 |
| 01214 | Anesthesia for total hip replacement | 14 | 14 | $0 |
Insurance plans in this area (ZIP 54403)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | WI | |
| N E U R O L O G Y | NY | |
| Interventional Radiology, Diagnostic Radiology | WI | |
| - | WI | |
| P S Y C H I A T R Y | IL | |
| - | MI | |
| Internal Medicine | WI | |
| Nurse Practitioner | IL | |
| - | WI | |
| - | WI |
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