Mark L. Bilowus, M.D. PC
Mark L. Bilowus, M.D. PC is a healthcare organization registered as Urology Physician in Reston, VA, holding Type 2 (organization) NPI 1346497732 since 2008. The authorized official on file is Mark Bilowus, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1346497732 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Mark L. Bilowus, M.D. PC |
| Practice address | 1850 TOWN CENTER PKWY STE 409, MEDICAL PAVILION, Reston, VA, 20190 |
| Phone | 7034780260 |
| Fax | 7034782718 |
| Enumeration date | 2008-08-27 |
| Last updated in NPPES | 2008-08-27 |
Authorized official
| Name | Mark Bilowus |
|---|---|
| Title | President |
| Phone | 7034780260 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208800000X | Urology Physician | Primary | 0101038025 | VA |
Copy-ready billing details
Provider: Mark L. Bilowus, M.D. PC NPI: 1346497732 Taxonomy: 208800000X (Urology Physician) Address: 1850 TOWN CENTER PKWY STE 409, MEDICAL PAVILION, Reston, VA, 20190
Verify this record
Cross-check NPI 1346497732 against the authoritative CMS record: view Mark L. Bilowus, M.D. PC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-08-27.