Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gerald W Rothacker Jr., MD
Orthopaedic Surgery Physician in Lancaster, PA · enumerated 2006 · practices at Orthopedic Assoc of Lancaster Ltd.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518926765
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01539101 | Other | PA | CAPITAL BLUE CROSS |
| 113780 | Other | PA | HEALTHAMERICA/HEALTHASSUR |
| 098380 | Other | PA | BLUE SHIELD |
| 517828 | Other | PA | AETNA |
| 20008545 | Other | PA | RAILROAD MEDICARE |
| 32249E | Other | PA | AMERIHEALTH MERCY |
| 0015165860005 | Medicaid | PA | - |
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
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-26.