Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Steven B Mazza, M.D.
Physical Medicine & Rehabilitation Physician in Bethlehem, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1699773051
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 019505520001 | Medicaid | PA | - |
| 2333959 | Other | - | UNITED HEALTHCARE |
| 329290 | Other | - | HEALTH AMERICA/HEALTH ASS |
| P3178857 | Other | - | OXFORD HEALTH PLANS |
| 2155666000 | Other | - | AMERIHEALTH |
| 2170520 | Other | - | MAMSI |
| 50027069 | Other | - | KEYSTONE HEALTH CENTRAL |
| 818562 | Other | - | FIRST PRIORITY HEALTH |
| 1472143 | Other | - | HIGHMARK BLUE SHIELD |
| 50027069 | Other | - | CAPITAL BLUE CROSS |
| P00010947 | Other | - | RAILROAD MEDICARE |
| 2155666000 | Other | - | INDEPENDENCE BLUE CROSS |
| 2155666000 | Other | - | KEYSTONE HEALTH EAST |
| 7452451 | Other | - | AETNA PPO |
| 83150 | Other | - | GEISINGER HEALTH PLAN |
| 9291125 | Other | - | PRIVATE HEALTHCARE SYSTEM |
| 9824445 | Other | - | CIGNA HEALTHCARE |
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.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-29.