Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Maehrer, DPM
Foot Surgery Podiatrist in Allentown, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811941636
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 122064 | Other | PA | MEDPLUS |
| 232907386001 | Other | PA | THREE RIVERS |
| 0776163 | Other | PA | AETNA |
| 0000533000 | Other | PA | HIGHMARK BLUE SHIELD |
| 0015085570002 | Medicaid | PA | - |
| 1510808 | Other | PA | GATEWAY |
| 480025169 | Other | PA | RAILROAD MEDICARE |
| 0533000 | Other | PA | KEYSTONE CENTRAL |
| 0735292000 | Other | PA | KEYSTONE EAST |
| 01210301 | Other | PA | CAPITAL BLUE CROSS |
| 0735292000 | Other | PA | AMERIHEALTH |
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 2022-01-13.