MR. MARK R ZELLMER (PA-C) – Medical Physician Assistant, NPI 1023013364
Medical Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,672 PHYSICIAN ASSISTANT in WI
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Provider Addresses for MR. MARK R ZELLMER (PA-C)
1836, South Avenue, La Crosse, La Crosse County, Wisconsin, 54601, United States
LA CROSSE, WI 546015429
Phone: (608) 782-7300
Type: Mailing
18606, Ervin Street, Whitehall, Trempealeau County, Wisconsin, 54773, United States
WHITEHALL, WI 547738613
Phone: (715) 538-4355
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: 2004-06-01
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 |
|---|---|---|---|---|
| I20040601001433 | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 65 | 35 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 47 | 25 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 30 | 28 | $0 |
| 99316 | Nursing facility discharge management, more than 30 minutes | 27 | 24 | $0 |
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 24 | 21 | $0 |
Insurance plans in this area (ZIP 54601)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | WI | |
| Family Practice | WI | |
| - | WI | |
| - | WI | |
| Nurse Practitioner | WI | |
| Clinical Social Worker | WI | |
| Physician Assistant | WI | |
| Physician Assistant | WI | |
| Certified Registered Nurse Anesthetist (Crna) | WI | |
| Family Practice | WI |
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