Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Christopher Campbell, M.D.
Endocrinology, Diabetes & Metabolism Physician in Altoona, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1306841952
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 73685 | Other | PA | GEISINGER HEALTH PLAN |
| 2205695 | Other | PA | UNITED HEALTHCARE |
| 7288373 | Other | PA | AETNA PROVIDER PIN# |
| 0019123370005 | Medicaid | PA | - |
| 1526324 | Other | PA | GATEWAY HEALTH PLAN |
| 000000160767 | Other | PA | UNISON PROVIDER PIN # |
| 310596 | Other | PA | UPMC HEALTH PLAN |
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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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.