ZACHARY T HOLLIS (M.D.) – Clinical Cardiac Electrophysiology Physician, NPI 1104142744
Clinical Cardiac Electrophysiology Physician
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NPPES metrics only — not quality of care.
109 CARDIAC ELECTROPHYSIOLOGY in VA
Provider Addresses for ZACHARY T HOLLIS (M.D.)
PO BOX 3250
WINCHESTER, VA 226042450
Phone: (703) 776-4001
Fax: (703) 776-2338
Type: Mailing
8081 INNOVATION PARK DR STE 602
FAIRFAX, VA 220314867
Phone: (571) 472-3270
Fax: (571) 472-3271
Type: Location
4320 Seminary Rd
Alexandria, VA 223041535
Phone: (703) 504-3000
Fax: (703) 504-3388
Type: Location
21785 Filigree Ct Ste 203
Ashburn, VA 201476214
Phone: (571) 472-3270
Fax: (571) 472-3271
Type: Location
3025 Hamaker Ct Ste 101
Fairfax, VA 220312229
Phone: (571) 472-3270
Fax: (571) 472-3271
Type: Location
44084 Riverside Pkwy
Leesburg, VA 201768279
Phone: (571) 472-3270
Fax: (571) 472-3271
Type: Location
224D Cornwall St NW Ste 306
Leesburg, VA 201762704
Phone: (571) 472-3270
Fax: (571) 472-3271
Type: Location
3300 Gallows Rd
Falls Church, VA 220423307
Phone: (703) 776-4001
Fax: (703) 776-7113
Type: Location
44045 Riverside Pkwy
Leesburg, VA 201765101
Phone: (703) 858-6000
Fax: (703) 858-6900
Type: Location
104 Selma Dr
Winchester, VA 226013834
Phone: (540) 678-2800
Type: Location
351 Valley Health Way # 200
Front Royal, VA 226306480
Phone: (540) 636-0600
Fax: (540) 636-0629
Type: Location
190 Campus Blvd Ste 201
Winchester, VA 22601
Phone: (540) 662-0306
Fax: (855) 264-2066
Type: Location
PO BOX 37174
BALTIMORE, MD 212973174
Phone: (571) 423-5699
Fax: (571) 423-5698
Type: Mailing
Campus Boulevard, Winchester, Winchester City, Virginia, 22602-2385, United States
WINCHESTER, VA 226012889
Phone: (540) 536-0307
Fax: (540) 536-0235
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 73 Open Payments records for all available years, with a total value of $10,558.
Total Amount is formed as General ($10,558) + Research ($0) + Ownership ($0) = $10,558.
Last reported payment date: 2024-12-31 • Largest payer in this snapshot: Medtronic, Inc. ($5,289).
Total Amount
$10,558
General + Research + Ownership
Payments
73
Total payment records
General Amount
$10,558
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $5,289 |
| Boston Scientific Corporation | $2,645 |
| Abbott Laboratories | $2,482 |
| Vital Connect, Inc | $65 |
| Biosense Webster, Inc. | $57 |
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: 2021-10-08
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20181001000904 | I | Cardiac Electrophysiology | VA | TBD |
| I20211008000465 | I | Cardiac Electrophysiology | DC | 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 |
|---|---|---|---|---|
| 93296 | Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 821 | 656 | $0 |
| 93294 | Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 575 | 464 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 407 | 306 | $0 |
| 93298 | Evaluation of cardiac rhythm monitor system, remote up to 30 days | 272 | 119 | $0 |
| G2066 | Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec | 269 | 117 | $0 |
Insurance plans in this area (ZIP 22604)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O L O G Y | HI | |
| H E M A T O L O G Y | WA | |
| - | VIR | |
| - | IL | |
| Orthopedic Surgery | VA | |
| - | VA | |
| Diagnostic Radiology | VA | |
| General Surgery | CT | |
| - | VA | |
| N E U R O S U R G E R Y | VA |
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