Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor
Dr. Douglas R Martzluf, MD
Family Medicine Physician in Chambersburg, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1568462273
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Registry record
Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 000633603 0005 | Medicaid | PA | - |
| 120420409 | Other | PA | DEPT OF LABOR |
| 122664 | Other | PA | UNISON |
| 1336336 | Other | PA | FIRST HEALTH |
| 247736 | Other | PA | MAMSI |
| 25-1716306 | Other | PA | INFORMED |
| 426727 | Other | PA | HEALTH AMERICA |
| 841779 | Other | PA | AETNA HMO |
| 867633 | Other | PA | MEDICARE GROUP # |
| 080087935 | Other | PA | RAILROAD MEDICARE |
| 25-1716306 | Other | PA | MULTIPLAN/PHCS |
| 25-1716306 | Other | PA | INTERGROUP |
| 25-1716306 | Other | PA | GREATWEST |
| 1651301 | Other | PA | CAPITAL BLUECROSS |
| 25-1716306 | Other | PA | HEALTHNET/TRICARE |
| 25-1716306 | Other | PA | SOUTH CENTRAL PREFERRED |
| 152796 | Other | PA | HIGHMARK BLUESHIELD |
| 25-1716306 | Other | PA | DEVON |
| 4307239 | Other | PA | AETNA NON-HMO |
| MD023608E | Other | PA | LICENSE |
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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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.