Zachary T. Hollis, M.D.
NPI 1104142744ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Fairfax, VA
Internal Medicine, Clinical Cardiac Electrophysiology (M.D.) in Fairfax, Virginia, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2010). In 2024 Medicare paid $293,969 for 1,483 patients, and Part D covered 328 of their prescriptions, 77% of them generic. Boston Scientific Corporation was the largest of 4 companies reporting payments in 2025, $7,970 in all, mostly travel and lodging.
Overview
| NPI | 1104142744 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 7, 2010 |
| Last updated in NPPES | Sep 29, 2026 |
| Certified by provider | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | 0101265236 | VA |
| Internal Medicine | 207R00000X | 0101265236 | VA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 0101265236 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiac Electrophysiology (DC); Practitioner - Cardiac Electrophysiology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,483 |
|---|---|
| Services billed | 4,168 across 76 procedure codes |
| Paid by Medicare | $293,969 |
Part D prescriptions in 2024
| Prescriptions (claims) | 328 · 760 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $95,421 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Cardiac Electrophysiology |
| Secondary specialties | Cardiovascular Disease (Cardiology), Internal Medicine |
Medical groups
- Inova Health Care ServicesAlexandria, VA · 1,817 clinicians
- Selma Medical Assoc IncWinchester, VA · 30 clinicians
Hospital affiliations
- Inova Alexandria HospitalAlexandria, VA
- Inova Fair Oaks HospitalFairfax, VA
- Inova Fairfax HospitalFalls Church, VA
- Inova Loudoun HospitalLeesburg, VA
Industry payments (Open Payments)
- 2025$7,970 · 58 payments from 4 companies
- 2024$9,081 · 59 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $2,855 | 13 |
| Medtronic, Inc. | $2,584 | 29 |
| Biosense Webster, Inc. | $2,376 | 15 |
| Abbott Laboratories | $154.63 | 1 |
What the 2025 payments were for
- Travel and Lodging$4,024 · 17 payments
- Food and Beverage$2,696 · 40 payments
- Consulting Fee$1,250 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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