MR. MARK THOMAS ZRELIAK (PA-C) – Surgical Physician Assistant, NPI 1538444567
Surgical Physician Assistant
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
4,429 PHYSICIAN ASSISTANT in VA
Provider Addresses for MR. MARK THOMAS ZRELIAK (PA-C)
PO BOX 1430
HARRISONBURG, VA 228031430
Phone: (540) 689-5555
Fax: (757) 579-8607
Type: Mailing
2006 HEALTH CAMPUS DR
HARRISONBURG, VA 228018679
Phone: (540) 689-5555
Fax: (757) 579-8607
Type: Location
342 OAK ST
SHARPSVILLE, PA 161501322
Phone: (814) 777-7787
Type: Mailing
2006 Health Campus Dr
Harrisonburg, VA 228018679
Phone: (540) 689-5555
Fax: (757) 579-8607
Type: Location
2 TAMPA GENERAL CIR
TAMPA, FL 336063571
Phone: (813) 821-8038
Fax: (813) 974-0483
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 6 Open Payments records for all available years, with a total value of $572.
Total Amount is formed as General ($572) + Research ($0) + Ownership ($0) = $572.
Last reported payment date: 2024-09-23 • Largest payer in this snapshot: ATRICURE, INC. ($350).
Total Amount
$572
General + Research + Ownership
Payments
6
Total payment records
General Amount
$572
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ATRICURE, INC. | $350 |
| Smith+Nephew, Inc. | $113 |
| ABIOMED | $110 |
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: 2025-01-23
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 5 Medicare enrollment records; no due dates published yet.
Enrollment records
5
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 |
|---|---|---|---|---|
| I20150407000670 | I | Physician Assistant | VA | TBD |
| I20190201000499 | I | Physician Assistant | CA | TBD |
| I20221019000393 | I | Physician Assistant | WA | TBD |
| I20231026001088 | I | Physician Assistant | FL | TBD |
| I20250123003606 | I | Physician Assistant | GA | 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 |
|---|---|---|---|---|
| 33508 | Harvest of vein using an endoscope | 30 | 30 | $0 |
| 33533 | Coronary artery bypass using artery graft, 1 graft | 29 | 29 | $0 |
| 33518 | Coronary artery bypass using vein or artery graft, 2 grafts | 13 | 13 | $0 |
Insurance plans in this area (ZIP 22803)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | FL | |
| - | FL | |
| - | FL | |
| Clinical Psychologist | FL | |
| - | FL | |
| - | FL | |
| - | FL | |
| - | FL | |
| - | FL | |
| - | FL |
Reviews
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