Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Laszlo Irwin Madaras, MD
Hospitalist Physician in Chambersburg, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689674400
See something wrong? Report a correction
Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2126897 | Other | PA | MAMSI |
| 25-1716306 | Other | PA | INTERGROUP |
| 25-1716306 | Other | PA | SOUTH CENTRAL PREFERRED |
| 25-1716306 | Other | PA | HEALTHNET/TRICARE |
| 880526 | Other | PA | HIGHMARK BLUESHIELD |
| P00185479 | Other | PA | RAILROAD MEDICARE |
| 1115577 | Other | PA | AETNA HMO |
| 50087167 (WH) | Other | PA | CAPITAL BLUECROSS |
| MD058188L | Other | PA | LICENSE |
| 25-1716306 | Other | PA | GREATWEST HEALTHCARE |
| 25-1716306 | Other | PA | DEVON |
| 25-1716306 | Other | PA | MULTIPLAN/PHCS |
| 867633 | Other | PA | MEDICARE GROUP # |
| P002564 | Other | PA | GATEWAY |
| 1007307260034 | Other | PA | MEDICAID GROUP # |
| 160306 | Other | PA | UNISON |
| 25-1716306 | Other | PA | INFORMED |
| 0015882350007 | Medicaid | PA | - |
| 120420410 | Other | PA | DEPT OF LABOR |
| 424478 | Other | PA | HEALTHAMERICA |
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.
Frequently asked questions
How do I verify Laszlo Madaras's NPI record?
Is NPI 1689674400 active?
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-12.