Zachary Hollis, M.D.
NPI 1104142744 · Clinical Cardiac Electrophysiology Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1104142744
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101265236 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
12 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
4,014 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 974 | $25 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 705 | $31 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 449 | $15 |
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 323 | $115 |
| Evaluation of Single, Dual, Or Multiple Lead Implantable Defibrillator System, Remote Up to 90 Days93295 | 271 | $39 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 75 | 28 |
| Amiodarone Hcl | 57 | 31 |
| Metoprolol Succinate | 31 | 20 |
| Pantoprazole Sodium | 29 | 27 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 28 | 12 |
| Flecainide Acetate | 20 | — |
| Valsartan | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,367 across 57 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (11)
- 4320 Seminary RdAlexandria, VA 22304-1535Phone: (703) 504-3000Fax: (703) 504-3388
- 21785 Filigree Ct Ste 203Ashburn, VA 20147-6214Phone: (571) 472-3270Fax: (571) 472-3271
- 3025 Hamaker Ct Ste 101Fairfax, VA 22031-2229Phone: (571) 472-3270Fax: (571) 472-3271
- 3300 Gallows RdFalls Church, VA 22042-3307Phone: (703) 776-4001Fax: (703) 776-7113
- 351 Valley Health Way # 200Front Royal, VA 22630-6480Phone: (540) 636-0600Fax: (540) 636-0629
- 44084 Riverside PkwyLeesburg, VA 20176-8279Phone: (571) 472-3270Fax: (571) 472-3271
- 44045 Riverside PkwyLeesburg, VA 20176-5101Phone: (703) 858-6000Fax: (703) 858-6900
- 224d Cornwall St Nw Ste 306Leesburg, VA 20176-2704
Registry dates
- Enumerated
- 2010-04-07
- Last updated
- 2026-03-04
- Certified
- 2026-03-04
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.