JENNIFER S. SHIMSHAK (PA-C) – Medical Physician Assistant, NPI 1598028128
Medical Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,678 PHYSICIAN ASSISTANT in WI
Provider Addresses for JENNIFER S. SHIMSHAK (PA-C)
1836 SOUTH AVE
LA CROSSE, WI 546015429
Phone: (608) 782-7300
Type: Mailing
3111 GUNDERSEN DR
ONALASKA, WI 546508447
Phone: (608) 775-8630
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.
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: 2012-09-18
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 |
|---|---|---|---|---|
| I20120918000477 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 100 | 100 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 77 | 55 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 69 | 65 | $0 |
| 99442 | Telephone medical discussion with physician, 11-20 minutes | 19 | 18 | $0 |
| G0438 | Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 12 | 12 | $0 |
Insurance plans in this area (ZIP 54601)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice, Hospice/Palliative Care, Geriatric Medicine | WI | |
| - | WI | |
| - | WI | |
| - | WI | |
| - | WI | |
| Oral Surgery | WI | |
| Family Practice | WI | |
| - | WI | |
| - | WI | |
| Diagnostic Radiology | WI |
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